022Cr钢的热变形行为及热加工图

doi:10.13251/j.issn.0254-6051.2020.07.011

金属热处理 ›› 2020, Vol. 45 ›› Issue (7): 51-56.DOI: 10.13251/j.issn.0254-6051.2020.07.011

022Cr钢的热变形行为及热加工图

李荣斌^1,2,3, 陈永强¹, 蒋春霞^2,3, 张如林^2,3, 尚海龙^2,3

1. 上海理工大学材料科学与工程学院, 上海 200093;
2. 上海电机学院材料学院, 上海 201306;
3. 上海电机学院上海大件热制造工程技术研究中心, 上海 201306

收稿日期:2019-12-22 出版日期:2020-07-25 发布日期:2020-09-07
作者简介:李荣斌(1969—), 男, 教授, 博士, 主要研究方向为高温合金结构与性能, E-mail:lirb@sdju.edu.cn
基金资助:
上海大件热制造工程技术研究中心(18DZ2253400)

Hot deformation behavior and processing maps of 022Cr steel

Li Rongbin^1,2,3, Chen Yongqiang¹, Jiang Chunxia^2,3, Zhang Rulin^2,3, Shang Hailong^2,3

1. School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
2. School of Materials Science and Engineering, Shanghai Dianji University, Shanghai 201306, China;
3. Shanghai Engineering Research Center of Large Piece Hot Manufacturing, Shanghai Dianji University, Shanghai 201306, China

Received:2019-12-22 Online:2020-07-25 Published:2020-09-07

摘要/Abstract

摘要： 用Gleeble 3180热模拟试验机对022Cr钢的热变形行为进行研究,揭示了变形抗力与变形程度、变形温度和应变速率的关系。在950~1200 ℃温度范围和应变速率为0.001~5 s^-1下进行热压缩,并利用动态材料模型(DMM)建立了022Cr钢热变形的工艺图。结果表明,随着变形温度的升高和应变速率的降低,022Cr钢的流动应力降低。根据流动应力曲线数据计算其变形激活能为381.615 kJ/mol。当应变不小于0.5时,022Cr钢热加工的最佳变形条件有两个区域,第一个区域在温度范围1100~1200 ℃,应变速率范围0.001~0.01 s^-1内,第二个区域在温度范围1130~1180 ℃,应变速率范围1~5 s^-1内,其功耗效率都能达到0.4以上。

关键词: 022Cr钢, 热压缩, 本构方程, 热加工图, 微观组织

Abstract: Hot deformation behavior of the 022Cr steel was studied by a Gleeble 3180 thermal simulation test machine, and the relationship between deformation resistance and deformation degree, deformation temperature and strain rate was revealed. The thermal compression was performed at temperature in range of 950-1200 ℃ and at strain rate in range of 0.001-5 s^-1, and a dynamic deformation model of the 022Cr steel was established by using a dynamic material model (DMM). The results show that as the deformation temperature increases and the strain rate decreases, the flow stress of the 022Cr steel decreases. The deformation activation energy calculated from the data of the flow stress curve is 381.615 kJ/mol. When the strain is not less than 0.5, the optimal deformation conditions of the 022Cr steel for hot working have two regions. The first region is in the temperature range of 1100-1200 ℃, the strain rate is in the range of 0.001-0.01 s^-1, and the second region is in the temperature range of 1130-1180 ℃, strain rate range of 1-5 s^-1, its power consumption efficiency can reach more than 0.4.

Key words: 022Cr steel, hot compression, constitutive equation, processing map, microstructure

中图分类号:

TG142.71

李荣斌, 陈永强, 蒋春霞, 张如林, 尚海龙. 022Cr钢的热变形行为及热加工图[J]. 金属热处理, 2020, 45(7): 51-56.

Li Rongbin, Chen Yongqiang, Jiang Chunxia, Zhang Rulin, Shang Hailong. Hot deformation behavior and processing maps of 022Cr steel[J]. Heat Treatment of Metals, 2020, 45(7): 51-56.

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022Cr钢的热变形行为及热加工图

Hot deformation behavior and processing maps of 022Cr steel

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