热处理22MnB5钢的力学响应及本构建模

doi:10.13251/j.issn.0254-6051.2021.12.031

金属热处理 ›› 2021, Vol. 46 ›› Issue (12): 193-198.DOI: 10.13251/j.issn.0254-6051.2021.12.031

热处理22MnB5钢的力学响应及本构建模

胡泽豪¹, 马洪浩¹, 刘君², 程柳¹, 张立强¹, 郭鹏程¹

1.中南林业科技大学机电工程学院, 湖南长沙 410004;
2.国家汽车质量监督检验中心襄阳, 湖北襄阳 441000

收稿日期:2021-07-18 出版日期:2021-12-25 发布日期:2022-02-18
作者简介:胡泽豪(1964—),男,教授,主要研究方向为模具CAD/CAE、材料成型与理论、材料成型新工艺和新技术,E-mail:599743458@qq.com。
基金资助:
湖南省自然科学青年基金(2019JJ50586);教育厅优秀青年基金(18B193)

Mechanical response and constitutive modeling of heat treated 22MnB5 steel

Hu Zehao¹, Ma Honghao¹, Liu Jun², Cheng Liu¹, Zhang Liqiang¹, Guo Pengcheng¹

1. College of Mechanical and Electrical Engineering, Central South University of Forestry and Technology, Changsha Hunan 410004, China;
2. National Automobile Quality Supervision and Test Center Xiangyang, Xiangyang Hubei 441000, China

Received:2021-07-18 Online:2021-12-25 Published:2022-02-18

摘要/Abstract

摘要： 22MnB5钢冷轧板材分别在750、850和950 ℃保温30 min水淬后,进行了应变速率分别为0.0005、0.001、0.01和0.1 s^-1的室温拉伸试验。结果表明:随着热处理温度的升高,试验钢的微观组织中板条状马氏体含量增加,其屈服强度和抗拉强度也显著提升;随着应变速率的增加,试验钢的屈服强度和抗拉强度呈现先增加后减小的趋势;最后基于Voce本构模型,通过引入Johnson-Cook本构的应变速率项,构建了可以描述22MnB5钢在不同热处理工艺和应变速率下力学行为的本构方程,其相关系数(R)和平均相对误差(AARE)分别为0.993和3.15%。

关键词: 22MnB5钢, 热处理, 力学响应, 本构建模

Abstract: The cold-rolled 22MnB5 steel sheet was water quenched by heating at 750 ℃, 850 ℃ and 950 ℃ for 30 min, respectively, and then stretched at room temperature with strain rates of 0.0005, 0.001, 0.01 and 0.1 s^-1, respectively. The results show that as the heating temperature increasing, the yield strength and tensile strength also increase significantly due to the increase of lath martensite. In addition, as the increase of strain rate, the yield strength and tensile strength of the steel first increase and then decrease. Finally, based on the Voce constitutive model, the constitutive equation which can describe the mechanical behavior of 22MnB5 steel under different heat treatment processes and strain rates is constructed by introducing the strain rate term of Johnson-Cook constitutive model. The correlation coefficient (R) and average absolute relative error (AARE) are 0.993 and 3.15%, respectively.

Key words: 22MnB5 steel, heat treatment, mechanical response, constitutive modeling

中图分类号:

TG161

胡泽豪, 马洪浩, 刘君, 程柳, 张立强, 郭鹏程. 热处理22MnB5钢的力学响应及本构建模[J]. 金属热处理, 2021, 46(12): 193-198.

Hu Zehao, Ma Honghao, Liu Jun, Cheng Liu, Zhang Liqiang, Guo Pengcheng. Mechanical response and constitutive modeling of heat treated 22MnB5 steel[J]. Heat Treatment of Metals, 2021, 46(12): 193-198.

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热处理22MnB5钢的力学响应及本构建模

Mechanical response and constitutive modeling of heat treated 22MnB5 steel

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