金属热处理 ›› 2023, Vol. 48 ›› Issue (9): 60-69.DOI: 10.13251/j.issn.0254-6051.2023.09.010

• 工艺研究 • 上一篇    下一篇

基于应变补偿的G13Cr4Mo4Ni4V轴承钢本构行为

蒋小娟1, 胡蒙均1, 孙涛2, 肖欣睿2, 董梦瑶1, 张海成2,3   

  1. 1.重庆工业职业技术学院 机械工程与自动化学院, 重庆 401120;
    2.重庆大学 材料科学与工程学院, 重庆 400044;
    3.中国第二重型机械集团德阳万航模锻有限责任公司, 四川 德阳 618000
  • 收稿日期:2023-04-18 修回日期:2023-07-21 出版日期:2023-09-25 发布日期:2023-10-25
  • 作者简介:蒋小娟(1987—),女,讲师,博士,主要研究方向为金属变形强塑性机理,E-mail:jiangxj@cqipc.edu.cn
  • 基金资助:
    重庆市教育委员会科学技术研究计划青年项目(KJQN202203209);重庆市自然科学基金面上项目(cstc2021jcyj-msxmX1112)

Constitutive behavior of G13Cr4Mo4Ni4V bearing steel based on strain compensation

Jiang Xiaojuan1, Hu Mengjun1, Sun Tao2, Xiao Xinrui2, Dong Mengyao1, Zhang Haicheng2,3   

  1. 1. School of Mechanical Engineering and Automation, Chongqing Industry Polytechnic College, Chongqing 401120, China;
    2. School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China;
    3. China National Erzhong Group Deyang Wanhang Die Forging Co., Ltd., Deyang Sichuan 618000, China
  • Received:2023-04-18 Revised:2023-07-21 Online:2023-09-25 Published:2023-10-25

摘要: 为研究G13Cr4Mo4Ni4V轴承钢高温流变行为及制定合理的热加工参数,采用Gleeble-3800热模拟试验机在应变速率为0.001~1 s-1、变形温度1223~1423 K的范围内对轴承钢试样进行热压缩试验。研究其流变应力与变形温度、应变速率、应变等因素的关系,针对应变对材料参数的影响,建立了高温变形温度范围内基于应变补偿的Arrhenius本构模型,此外还依据金属塑性变形过程中的功率耗散系数结合失稳判据,共同确定了该轴承钢的热加工图。结果表明,流变应力与变形温度呈负相关性,与应变速率呈正相关性。构建了考虑应变补偿的Arrhenius本构模型,流动应力预测值与试验数据相关系数R及平均相对误差绝对值AARE分别为0.991和5.786%,模型预测精度较高。结合功率耗散系数和失稳判据计算出该种合金的热加工图,表明温度在1320~1400 K、应变速率在0.1~1 s-1范围内,该轴承钢有较好的热加工性。

关键词: G13Cr4Mo4Ni4V轴承钢, 流变行为, 应变补偿Arrhenius模型, 热加工图

Abstract: To study the flow stress behavior of G13Cr4Mo4Ni4V bearing steel at high temperature and acquire reasonable hot processing parameters, isothermal compression tests were carried out at deformation temperatures between 1223-1423 K and strain rates between 0.001-1 s-1by Gleelle-3800. The relationship between flow stress and deformation temperature, deformation rate, strain and other factors was studied. In view of the influence of strain on material parameters, an Arrhenius constitutive model based on strain compensation was established within the high-temperature deformation temperature range. In addition, according to the power dissipation coefficient in the metal plastic deformation process and the instability criterion, the hot processing map of the bearing steel was jointly determined. The results show that the flow stress is negatively correlated with deformation temperature and positively correlated with strain rate. An Arrhenius constitutive model considering strain compensation is constructed, and the correlation coefficient R between the predicted flow stress and experimental data, as well as the absolute average relative error AARE, are 0.991 and 5.786%, respectively. The model has high prediction accuracy. Combined with power dissipation coefficient and instability criteria, the hot processing map of this alloy is calculated, which shows that the bearing steel has better hot processing property when the temperature is 1320-1400 K and the strain rate is 0.1-1 s-1.

Key words: G13Cr4Mo4Ni4V bearing steel, flow stress behavior, strain compensation Arrhenius model, hot processing map

中图分类号: