Modeling and numerical Simulation of Quenching Processes of AISI 4140 Steel and Validation

Thursday, April 21, 2016: 8:50 AM
Ballroom DEF (Hyatt Regency Savannah)
Mr. Wei SHI , Tsinghua University, Beijing, China
Fei-long NIU , Harbin Engineering University, Nangang, China
Dr. Imre Felde , University of Obuda, Budapest, Hungary
Guo JIN , Harbin Engineering University, Nangang, China
Title: Modeling and numerical Simulation of Quenching Processes of AISI 4140 Steel and Validation

To predict evolutions of microstructures and internal stresses in quenching processes of components made by AISI4140 steel, a temperature- microstructure- stress material model was established. Kinetics of martensitic and bainitic transformation were established by using CCT curves measured. Influences of internal stresses on martensitic and bainitic transformation were investigated by uniaxial thermal mechanical experiments. The temperature-transformation-stress model proposed of AISI 4140 was implemented in DEFORM-HT, and the calculated results of temperature, microstructures and internal stresses were compared with published references and measured results.

Keywords: quenching, multi-physics modeling, transformation plasticity, numerical simulation

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