40Cr钢奥氏体动态再结晶过程数值模拟

余新平; 董洪波

doi:10.15980/j.tzzz.2015.01.008

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40Cr钢奥氏体动态再结晶过程数值模拟
Numerical Simulation of Austenite Recrystallization Process in 40Cr Steel
2015年35卷第1期页码：26-29
纸质出版日期： 2015 ，
DOI： 10.15980/j.tzzz.2015.01.008

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[1]余新平,董洪波.40Cr钢奥氏体动态再结晶过程数值模拟[J].特种铸造及有色合金,2015,35(01):26-29.

Yu Xinping, Dong Hongbo. Numerical Simulation of Austenite Recrystallization Process in 40Cr Steel[J]. Special Casting & Nonferrous Alloys, 2015,35(1):26-29.
[1]余新平,董洪波.40Cr钢奥氏体动态再结晶过程数值模拟[J].特种铸造及有色合金,2015,35(01):26-29. DOI： 10.15980/j.tzzz.2015.01.008.

Yu Xinping, Dong Hongbo. Numerical Simulation of Austenite Recrystallization Process in 40Cr Steel[J]. Special Casting & Nonferrous Alloys, 2015,35(1):26-29. DOI： 10.15980/j.tzzz.2015.01.008.

摘要

采用数值模拟研究了40Cr钢奥氏体热变形行为。通过JMatPro软件得到本构关系曲线

建立了动态再结晶模型。在Deform-3D平台上将动态再结晶模型和元胞自动机模型结合起来

对40Cr钢高温压缩过程进行模拟仿真。结果表明

40Cr钢平均晶粒尺寸随着压缩变形量的增加而不断变小。当真应变为1时

在大变形区的晶粒尺寸为10.1μm

和相关试验对比误差在±10%以内。元胞自动机模拟可视化再现了动态再结晶过程。

Abstract

Thermal deformation behavior of austenite 40 Cr steel was analyzed by numerical simulation.Constitutive relation curve was drawn by JMatPro software

and dynamic recrystallization model was established.Compressive process of 40 Cr steel at high temperature was simulated by recrystallization model combining with cellular automaton model on Deform-3Dplatform.The results show that the average grain size of 40 Cr steel is decreased with the increase of compression deformation rate

and with true strain of 1

the grain size in severe deformation area reaches 10.1μm

and the error is within range of±10% compared with relevant experiment.Cellular automaton simulation can visualize the dynamic recrystallization process.The prediction results are well in agreement with experimental ones.