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DEFORM

TM

-HT

DEFORM
™ -HT is a powerful stand-alone finite element modeling system for simulatingheat treatment processes. The system predicts thermal, mechanical and metallurgical responses of parts during heat treatment. Heat treat distortion, quench cracking and residual stresses can be predicted. The system can also provide information on phase transformation and phase volume fraction.A variety of materials ranging from carbon steel and aluminum to titanium and nickelbased alloys can be modeled.Typical heat treatment processes include:- normalizing - austenizing - carburizing- solution treatments- quenching - tempering - aging- stress relieving DEFORM-HT can be used to analyze diffusion processes such as carburization, providinga prediction of case depth. Residual stresses after heat treatment processes can also be predicted. The system can also simulate stress relaxation and aging. Modeling of stress relaxation is important since the residual stresses in the part can significantly impact subsequent machining distortion. Residual stress influences the life of a component in service.This powerful modeling tool provides critical information about the process variablesrequired to control and optimize heat treatment processes. It provides the ability to visualize the microstructure, temperature and stress during heat treatment. This is simply not possible with experiments. It is possible to conduct sensitivity analysis without the time and cost of physical trials. DEFORM-HT is a tool that enables users to achieve an optimum balance of mechanical properties, while avoiding quench cracks and minimizing heat treat distortion and residual stresses.

Product Specifications

?DEFORM-HT is available as a 2D or3D stand-alone system.?Heat transfer, phase transformationand diffusion modules are coupled in an integrated simulation environment.?Material models include elasto-plastic,thermal elasto-plastic and creep.?A mixture rule is used to definevarious phase properties as a function of temperature and primary alloying element.?Model outputs niclude evolution oftemperature, residual stress, dostortion, phase volume fraction and hardness.?Volume change due to phasetransformation is accounted for inthe model.?Five popular creep models areimplemented to simulate the stress relaxation process.?Multiple heat treat operations can beset up to run sequentially without manual intervention.?Induction and resistance heating canbe modeled for axisymmetric (2D) products and processes.?Grain size and percentage recrystalli-zation can be predicted for IN718 and Waspalloy.