GLEEBLE CASE STUDIES

 

For nearly 70 years, Dynamic Systems Inc. has enabled breakthrough research and production advancements. From academia to industry, organizations have used Gleeble systems to solve complex materials challenges and improve performance.

Below is a sample of case studies demonstrating these real-world results.

Rocketdyne (Aerojet Rocketdyne)
Rocketdyne, manufacturer of the NASA Space Shuttle's main engines, acquired a Gleeble 1500 to improve the quality and efficiency of their critical welding processes on difficult-to-weld superalloys used in shuttle and booster engines. The Gleeble enabled their team to conduct hot ductility studies using Taguchi design of experiments, dramatically reducing research timelines — what previously took two to three years could now be completed in about a month, and at a fraction of the material and machining costs. Beyond welding research, Rocketdyne also used the Gleeble to simulate re-entry heating, test temperature-sensitive paints under partial-pressure air conditions, perform liquid metal embrittlement evaluations in hours rather than weeks, and study thermal low cycle fatigue in copper-based alloys used in combustion chambers.

ALCOA Technical Center
Researchers at the ALCOA Technical Center in Pennsylvania used a Gleeble 1500 to characterize the properties of new advanced materials — including aluminum-iron-cerium alloys, aluminum-lithium alloys, and titanium-aluminide — before releasing them to customers who needed to understand how the materials would behave in joining, forming, and machining applications. The Gleeble enabled the team to conduct rapid elevated-temperature testing, measure crack sensitivity during casting, and perform diffusion bonding research with a high degree of accuracy and precision, work that would have been far more difficult or time-consuming with conventional methods. One particularly notable outcome was using the Gleeble to identify processing changes that significantly reduced the appearance of unsightly "Luder's bands" — stretch mark-like surface defects that occasionally appeared on unpainted commercial aircraft skins made from aluminum-lithium alloy 2090.

Avesta Sheffield
Avesta Sheffield, the world's largest producer of duplex stainless steel, acquired a Gleeble 3500 to support process optimization across virtually every stage of their production operations, including hot rolling, heat treatment, welding, and continuous casting of their specialized stainless steel grades. The Gleeble proved especially valuable in helping the company evaluate alternative heat treatment processes for new production lines, study the effects of residual elements on hot ductility, and smooth the transition from ingot to continuous casting for certain steel grades — tasks that previously required more time, equipment, or materials. The system also allowed Avesta to characterize the weldability of new steels and provide that data directly to customers, ensuring those customers could confidently deliver high-quality finished products using Avesta's materials.

Böhler Edelstahl
Böhler Edelstahl, a producer of high-speed steels, tool steels, and special alloys, established a dedicated physical and numerical simulation group built around a Gleeble 3800 to define optimal processing routes for new and difficult-to-work alloy compositions, as well as to measure application-relevant material properties for their customers. The Gleeble is used across a wide range of testing applications — including hot tensile and compression testing, thermal/mechanical fatigue testing, and melting and solidification studies — with priority given to high-speed steels, hot work tool steels, nickel- and cobalt-based alloys, and stainless steels. A key early success came when the simulation team used the Gleeble to identify the crack initiation mechanism in a heat and corrosion resistant steel grade, allowing them to optimize process parameters, reduce production faults, and shorten product development timelines without the cost and risk of full-scale production trials.

British Steel Laboratories (Corus/Tata)

British Steel Technical's Swinden Laboratories primarily acquired their Gleeble 1500 for heat-affected zone (HAZ) thermal cycle simulation in welding, allowing researchers to rapidly assess weld quality across various steel grades using minimal material, while also applying the machine to thermomechanical simulation, hot tensile testing, and continuous casting solidification studies. A particularly significant use was in support of the laboratory's active microstructure modelling group, where Gleeble simulations were used to develop, fine-tune, and validate finite element and microstructure evolution algorithms for predicting the final properties of strip, plate, and rod after hot rolling and forging. The Gleeble also proved valuable for hot ductility testing of continuously cast low alloy steels, enabling researchers to optimize reheating procedures and successfully reproduce continuous casting cooling profiles to better understand their effect on product microstructure.

CANMET
Researchers at CANMET, a Canadian government research center, used the Gleeble across several cooperative projects with steel and railway companies to simulate continuous casting, flash butt-welding of rail, and the welding of steel plates for marine vessels — with the shared goal of identifying processing conditions that cause cracking, soft spots, and microstructural weaknesses. A key focus was on HSLA steels for naval and icebreaking vessels, where the Gleeble was used to replicate heat-affected zone microstructures and study how welding heat input affects the strength, toughness, and corrosion resistance of steel that must endure dynamic impacts at low temperatures in saltwater environments. The team consistently found strong agreement between their Gleeble simulation results and observations from actual operating equipment, validating the approach and positioning the Gleeble as a central tool for ongoing and expanding metallurgical research at the facility.

Carpenter Technology Corporation

Carpenter Technology, a producer of over 400 grades of steel and specialty alloys, uses their Gleeble 1500 as a standard screening tool to determine the hot workability of new alloys before committing to full production heats — a process that replaced two previously developed in-house tests that lacked the necessary temperature and strain rate control to reliably predict real-world manufacturing behavior. The Gleeble has allowed CarTech to identify optimal hot working temperatures, assess furnace overheating damage, develop flow stress data for finite element analysis, and assist customers in defining correct temperature ranges for additional hot working operations on CarTech's products. With well-instrumented furnace controls and rolling lines ensuring strong correlation between lab and production data, the Gleeble has become, in the words of CarTech's own engineers, "an absolutely essential part of our business.

Colorado School of Mines

The Colorado School of Mines has used their Gleeble extensively across a wide variety of research projects — spanning welding and joining, phase transformations, hot deformation, and solidification studies — supporting both private industry contracts and graduate thesis work involving materials ranging from titanium and aluminum alloys to high-strength steels and composites. Key research areas have included studying hot ductility and HAZ cracking in titanium and high-strength low-alloy steels, developing continuous cooling transformation diagrams for naval steel applications, generating flow stress curves for new alloy steels, and exploring innovative joining techniques such as transient liquid phase bonding of aluminum and composite materials. The Gleeble's flexibility has been particularly valued by the research team, enabling them to adapt the system to unconventional experiments — such as supercooling stainless steel specimens below room temperature using ultracooled helium gas — and consistently deliver precise, high-quality data across a broad range of applications.

Dofasco
Dofasco, a Canadian flat-rolled steel producer serving the automotive industry, has used their Gleeble 1500 across a broad range of production-focused applications — including developing continuous cooling transformation diagrams for new steel grades, measuring flow stress characteristics, simulating continuous casting to identify critical cracking temperatures, and optimizing galvanneal annealing line parameters. The CCT work proved so impactful that it directly informed a $50 million hot rolling table extension needed to achieve the critical cooling rates required for producing high-end HSLA steels, while the continuous casting simulations helped operators avoid the specific temperatures that caused surface cracking during slab processing. Strip annealing testing on the Gleeble has delivered particularly tangible bottom-line benefits, enabling Dofasco to define precise operating windows for their annealing lines that prevent scrapped product and generate potential energy savings in the millions of dollars.

Edison Welding Institute

EWI, the largest applied engineering center in the US focused on materials joining technology, installed a Gleeble HAZ 1000 as the centerpiece of their weldability testing facility, using it to investigate a wide range of materials including metal matrix composites, nickel-base superalloys, duplex stainless steels, and structural steels. A key research priority was a joint program with Ohio State University to develop correlations between Gleeble hot ductility testing and other weldability test techniques, with the goal of defining a standardized "weldability parameter" based on the physical, chemical, and metallurgical properties of a given material. Dr. Lippold highlighted a critical gap in the field — that among over 150 identified hot cracking weldability tests there was virtually no standardization of procedures or reporting — and positioned EWI, with its 210-member base and expanded testing facility, as ideally suited to lead the effort to develop standardized procedures and build a reliable hot ductility test database for the broader industry.

General Electric Research and Development Center

GE's Research and Development Center in Schenectady acquired a Gleeble 1500 primarily to develop a solid-state pressure welding process for bonding Titanium 6-4 fan airfoils to forged hubs in integrally bladed rotors — a configuration that eliminates traditional dovetail blade attachments to save weight and improve jet engine airflow efficiency. Using statistically designed test matrices and a complementary finite difference model, the team successfully identified a broad process window that produced weld properties equivalent to the parent material, and the resulting fan/hub assemblies were subsequently engine-tested successfully. Beyond the welding work, the Gleeble was also used to generate superplastic forming data for titanium components, evaluate braze alloy joint strength for X-ray tube manufacturing, measure radiative emittance of various alloys, and simulate weld zone temperature and strain cycles during post-weld heat treatment — demonstrating the system's value across a wide range of GE's advanced manufacturing research needs.

Iowa State and Ames Laboratory

Iowa State University and the U.S. Department of Energy's Ames Laboratory acquired a Gleeble 3800 to support a wide range of materials processing research — from casting and forging to sintering and extrusion — with a particular emphasis on enhancing their additive manufacturing capabilities by pairing the system with existing tools like their LENS 3D printer for high-throughput testing of alloy samples. The Gleeble's ability to rapidly bring samples to extreme temperatures using resistive heating allows researchers to precisely simulate complex industrial processes and generate the physical property data that manufacturing partners need, helping bridge the difficult gap between materials synthesis research and commercial application. The team also emphasized the complementary relationship between physical and computational simulation, noting that Gleeble measurements can validate and inform modeling work while modeling can in turn guide which physical simulations need to be run.

IPSCO

IPSCO, a Canadian steel producer, turned to Gleeble simulation after experiencing several months of costly production losses caused by hot shortness and transverse cracking in their high carbon steel products — a problem they suspected was linked to non-optimized slab reheat temperatures and interdendritic segregation in their continuously cast slabs. Using a Gleeble 2000 at CANMET, the team ran a series of "on heating" and "on cooling" hot ductility tests to generate reduction-in-area curves at various reheat and deformation temperatures, allowing them to identify the optimal combination that minimized hot shortness without excessively increasing flow stress. The results were decisive — after modifying their processing procedures based on the Gleeble data, the incidence of hot shortness dropped to near zero, saving the company hundreds of thousands of dollars through tests that cost only a fraction of that amount.

Lehigh University

Lehigh University's Energy Research Center installed a specially modified Gleeble 1000 — the only unit fully dedicated to sheet steel processing — to support a major research program on galvanizing and galvannealing, driven largely by the automotive industry's push for extended corrosion warranties that has led steelmakers worldwide to apply zinc coatings to millions of tons of steel annually. The research focused on two key areas: stabilizing the thermodynamically unstable coatings produced by electrogalvanizing processes, and understanding how the many variables involved in hot dip zinc coating — including steel and zinc chemistry, heating and cooling rates, and time at temperature — influence alloying morphology and coating formability. By allowing precise simulation and modeling of thermal and mechanical processes in sheet steel, the Gleeble was central to the team's broader goal of developing "intelligent processing" for engineered materials that combine a steel substrate with alloyed zinc and polymer paint coatings to compete with plastics in automotive applications.

Lockheed Martin Space Systems
Researchers used a specially modified Gleeble 2000 — fitted with a custom vacuum chamber and control system — to characterize and train Nickel-Titanium-Copper (NiTiCu) shape memory alloy actuators for use in next-generation spacecraft mechanisms, where their ability to provide precise articulation, low-shock separation, and deployment of solar arrays and antennas offers significant advantages over traditional motors and solenoids. The Gleeble was used to investigate key material properties including the effects of alloy composition and annealing temperature on transformation behavior, superelastic response under stress-strain cycling, and the dramatic modulus changes that occur as the material transitions between martensite and austenite phases. The resulting material property data was incorporated into mechanical design equations to generate actuator specifications, with fabricated actuators then subjected to additional thermomechanical treatment in the Gleeble to verify their response bandwidth and stability before integration into spacecraft mechanisms.

Los Alamos National Laboratory

The Process Metallurgy Group at Los Alamos National Laboratory used their Gleeble 1500/20 across an exceptionally diverse range of exotic materials research programs, including developing processing maps and simulating electron beam welding for aerospace candidates like TiB2-reinforced gamma TiAl, investigating the isothermal forging of high-temperature composites like MoSi2, and studying the deformation and strengthening mechanisms of tungsten-uranium composites — all with the advantage of requiring only small quantities of these rare and costly materials. A particularly dramatic application involved custom modifications made by Dynamic Systems to enable the Gleeble to reach temperatures in excess of 3,000°C for testing carbon/carbon composite housings used to protect radioactive power sources on spacecraft like the Galileo probe, ensuring the material could withstand the extreme heat of an accidental atmospheric re-entry. As Dr. Damkroger summarized, a good deal of the group's work would have been very difficult or outright impossible without the Gleeble's dynamic thermal and mechanical testing capabilities, which provided precise atmosphere control, rapid thermal simulation, and real-time stress-strain monitoring across all of their programs.

National Steel – Detroit

Dr. Chih-Hao Shen at National Steel Corporation's Technical Research Center used a Gleeble 1500 across four interconnected research areas — simulating hot mill rolling conditions via plane strain compression, measuring deformation resistance during rolling, determining high-temperature tensile properties at coiling temperatures, and generating continuous cooling transformation curves — all aimed at building a fundamental, data-driven basis for optimizing the company's steel production processes. A particularly notable aspect of the work was using the Gleeble to simulate rolling mill deformation before generating CCT curves, a capability that sets it apart from traditional CCT testing which is performed without deformation, and which allowed the team to more accurately model the real-world relationship between rolling conditions and the resulting microstructure. The ultimate goal of the research was to consolidate steel chemistries and instead use controlled deformation and cooling conditions to achieve desired material properties, with the potential to save significant costs by reducing the need to melt multiple steel variants.

Nippon Steel

Dr. Hirowo Suzuki at Nippon Steel used a Gleeble 510 to develop a method for simulating continuous casting that proved transformative for the company — helping to solve quality control problems so effectively that Nippon Steel was able to grow its continuous casting production from roughly 20% to over 95% of total output, enabling significant energy savings, lower production costs, and in many cases direct rolling of steel straight from the caster. Beyond continuous casting, Nippon Steel's multiple Gleeble 1500 systems are used daily across a broad range of applications including hot rolling, forging, phase transformations, heat treatment, powder metallurgy, and welding, with the Gleeble's speed allowing more than 15 hot tensile tests per day compared to only 2-3 on alternative equipment. Dr. Suzuki himself made numerous contributions back to the Gleeble platform over the years — including software ideas, hot ductility testing refinements, and continuous casting simulation improvements — reflecting a uniquely collaborative relationship between Nippon Steel and Dynamic Systems that advanced the capabilities of the Gleeble system as a whole.

Ohio State University

Ohio State University's Department of Welding Engineering — the only program in the US offering a doctorate in the field — keeps their Gleeble 1500 in near-constant use across a wide variety of graduate and faculty research projects focused on joining advanced materials including nickel-based superalloys, titanium aluminides, aluminum-lithium alloys, and duplex stainless steels, with many projects supporting aerospace and defense applications for sponsors such as GE Aircraft, the Office of Naval Research, and the US Army. Key research areas included studying weld heat-affected zone cracking in cast Inconel 718, simulating fusion zone solidification in aluminum-lithium alloys, performing diffusion bonding studies for high-temperature aluminum alloy applications in missiles, and examining the effects of thermal cycling on the toughness and corrosion resistance of duplex stainless steel welds. As Dr. Baeslack noted, the Gleeble's precise control of temperature, heating rates, and cooling rates — combined with its broad flexibility — made it an essential tool that virtually every graduate student in the department relied upon at some point in their research.

Rensselaer Polytechnic Institute

RPI holds a uniquely historic connection to the Gleeble, having been the birthplace of the technology in the 1950s when graduate students and faculty first devised a method for simulating weld heat-affected zones using resistance heating — and welding simulation research continues there to this day, with current graduate students using the Gleeble to create hundreds of microstructural variants from small quantities of new steel grades and explore the synergistic effects of thermal and mechanical interactions. Professor Roger Wright and his students pushed the boundaries of conventional Gleeble thinking by leveraging the system's 18,000 lb. mechanical capacity as a precision workhorse for hot workability, load relaxation, and sheet drawing research — conducting studies for Bethlehem Steel, IBM, and General Motors that had little to do with thermal simulation but greatly benefited from the Gleeble's precise computer control and data acquisition capabilities. Together, the two research directions at RPI illustrate the Gleeble's remarkable versatility — from its original purpose of thermal metallurgical simulation to a much broader role as a high-precision thermal-mechanical and purely mechanical testing platform.

Schweißtechnische Lehr- und Versuchsanstalt M-V GmbH Institute

The welding institute in Rostock, Germany acquired a Gleeble 3500 as part of the multi-partner "LASER 2000" project, using it to investigate the transformation behavior of low and unalloyed steels during laser beam welding — work that required the Gleeble's unique ability to simulate heating rates of up to 10,000°C per second, a capability impossible to replicate with other heating technologies. A key challenge the Gleeble helped overcome was the extremely narrow heat-affected zone produced by laser welding (approximately 1 mm wide), which provides insufficient material for mechanical property testing — the Gleeble's physical simulation capability allows researchers to produce much larger HAZ specimens suitable for hardness, toughness, and tensile testing, with the ultimate goal of publishing a comprehensive "Laser Weldability" manual. Beyond laser weldability, the institute also used the Gleeble to investigate laser cladding of cobalt-based alloys onto engine components for bulk carriers and container vessels, simulating diesel engine thermal cycles to predict and characterize the properties of protective surface layers on pistons, valves, and camshafts.

Tata Steel

Tata Steel's R&D Division installed a Gleeble 1500 — the first of its kind in India — to support research across their continuous casting, hot strip mill, and bar and rod mill operations, with the dual goals of previewing structure and property development under simulated conditions to eliminate expensive plant trials, and providing first-level validation of mathematical models before committing to full-scale production testing. The Gleeble proved valuable across a wide range of applications including crack-sensitivity studies in continuous casting, five-stage finish rolling simulations, run-out-table cooling strategy optimization, high-temperature flow stress determination for rolling load calculations, and microstructure prediction at different cooling rates — with results consistently showing excellent correlation with actual plant data. As R&D Director Dr. Mohanty emphasized, the ability to generate reliable processing data without risking the company's multimillion-dollar production facilities makes the Gleeble indispensable, and the team's longer-term vision is to use it to design processing schedules that achieve a full range of desired material properties without requiring variations in steel chemistry.

University of Alabama at Birmingham (UAB)

Researchers at UAB used Gleeble systems over more than a decade to investigate weld heat-affected zone behavior in nickel-based superalloys — initially working with GE and Rocketdyne to improve the weldability of Space Shuttle main engine components by identifying problematic carbide and Laves phase melting on grain boundaries, and later using the Gleeble to validate computer models of HAZ metallurgical evolution funded by NSF, DOE, and Cray Computers. This sustained research program led to a landmark metallurgical discovery — constitutional liquid film migration — a previously unrecognized phenomenon in which precipitate liquation in the HAZ causes grain boundaries to migrate at distances an order of magnitude greater than previously observed, with new grains actually forming in the process, a discovery Dr. Thompson explicitly credited to the Gleeble's unique ability to simulate dynamic systems and capture snapshots of fast-moving metallurgical events at precise points in time. The DOE subsequently funded additional research at UAB to further understand this phenomenon, with the Gleeble serving as the centerpoint of ongoing work involving binary alloy experiments, grain growth modeling, and Monte Carlo welding simulations with continuous heating and cooling.

University of Birmingham

The University of Birmingham's IRC in Materials for High Performance Applications purchased a Gleeble 3500 to support their mission of advancing net shape manufacture of metallic, ceramic, and polymeric components, using it to generate accurate materials data for process models across a wide range of materials including steels, nickel-based alloys, titanium alloys, and titanium aluminides — with the system seeing broad use from graduate students, post-doctoral researchers, and external collaborators from other universities and companies. Beyond its primary net shape manufacturing focus, the Gleeble's versatility led to its adoption across several additional research programs, including HAZ embrittlement studies on structural steels used in power plants, generation of constitutive equations for finite element modeling of tool steel machining processes, and phase stability and transformation behavior studies in aerospace titanium aluminide alloys. A newly added strip annealing system further expanded the Gleeble's role at Birmingham, supporting a multi-disciplinary industry collaboration aimed at developing a practical in-situ monitoring system for steel transformation behavior during cooling after hot strip rolling.

University of British Columbia

The University of British Columbia's Centre for Metallurgical Process Engineering used their Gleeble 1500 as the critical experimental link between real-world industrial production and computer modeling, conducting extensive compression and multi-hit deformation tests to simulate hot rolling of low-carbon steels and generate the stress-strain-microstructure data needed to develop and validate constitutive equations for their mathematical process models. The research followed a rigorous closed-loop methodology — operating conditions from actual production mills were used to design Gleeble simulations, the resulting data was fed into computer models to predict roll forces and microstructure, and those predictions were then checked against real production floor measurements to validate the models. Beyond hot rolling of steel, the Gleeble was also applied to phase transformation studies on run-out table cooling, aluminum rolling simulations, and metal-matrix composite extrusion, all in service of the team's overarching goal of enabling scientifically-based, off-line simulation of processing schedules that can accurately predict the final microstructural and mechanical properties of a finished product.

University of Oulu, Finland

The University of Oulu in Finland installed their first Gleeble 1500 in 1991 to support research closely tied to the country's steel industry — particularly the development of thermo-mechanically processed high-strength low-alloy steels for demanding applications like icebreakers — conducting an extensive range of projects covering CCT diagram development, austenite transformation behavior, hot workability of stainless and maraging steels, HAZ impact toughness in TMCP steels, and constitutive equation generation for FEM modeling of residual stresses in rolling. A notable methodological contribution from the Oulu team was the application of stress relaxation testing on the Gleeble to efficiently monitor softening kinetics and precipitation behavior in hot-deformed austenite, with the technique proving highly effective for studying the influence of temperature, strain, strain rate, and chemistry — complementing comparisons made with hot torsion and plane strain compression testing at partner universities. The Gleeble also served as an important educational tool for welding metallurgy students at the university, while simultaneously supporting industry-relevant welding research including simulation of coarse-grained HAZ properties for high-energy electrogas welding processes used at Finnish shipyards.

University of Science and Technology Beijing

The Gleeble laboratory at the University of Science and Technology Beijing, led by Professor Dang Zijiou and her interdisciplinary team, operates their Gleeble 1500 at an impressive pace of over 1,500 hours per year — supporting undergraduate and graduate education for dozens of thesis students annually, while simultaneously conducting major research programs including a Ministry of Metallurgy-sponsored study measuring hot ductility and ultimate stress across 35 steel grades to improve continuous caster productivity, and a State Commission of Education-funded investigation into how strain rate, strain values, and temperature influence steel formability. The team's diverse backgrounds in mechanical engineering, electronics, and metal physics gave them a uniquely interdisciplinary approach to pushing the boundaries of Gleeble applications, leading to innovations in rolling simulation, thermal/mechanical fatigue testing, and the design of custom jaws for cutting procedure simulation. The laboratory also played a broader support role for the Chinese research community, with team member Ms. Yan — trained directly at DSI headquarters — regularly assisting other Chinese institutions in maintaining, calibrating, and maximizing the use of their own Gleeble systems.

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