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材料导报  2022, Vol. 36 Issue (21): 21010158-7    https://doi.org/10.11896/cldb.21010158
  金属与金属基复合材料 |
30Cr4MoNiV超高强度钢热变形本构方程的构建与优化
陈刚1,*, 姚远超1, 贾寓真2,3, 苏斌1, 刘国跃2,3, 曾斌4
1 湖南大学材料科学与工程学院,长沙 410082
2 湖南省锯切工程技术研究中心,长沙410200
3 湖南泰嘉新材料科技股份有限公司,长沙 410200
4 湖南华菱涟源钢铁有限公司,湖南 娄底 417000
Construction and Optimization of Hot Deformation Constitutive Equation of 30Cr4MoNiV Ultra-high-strength Steel
CHEN Gang1,*, YAO Yuanchao1, JIA Yuzhen2,3, SU Bin1, LIU Guoyue2,3, ZENG Bin4
1 College of Materials Science and Engineering, Hunan University, Changsha 410082, China
2 Sawing Engineering Research Center of Hunan Province, Changsha 410200, China
3 Bichamp Cutting Technology (Hunan) Co., Ltd., Changsha 410200, China
4 Hunan Valin Lianyuan Iron and Steel Co., Ltd., Loudi 417000, Hunan, China
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摘要 采用Gleeble-3500 热模拟机在温度为1 173~1 373 K和应变速率为0.01~10 s-1的条件下通过热压缩试验研究了30Cr4MoNiV超高强度钢的热变形行为,引入应变补偿建立了优化的本构方程。结果表明:流动应力随应变速率的增大和变形温度的降低而增大。采用幂律函数、指数函数和双曲正弦函数构建的三种本构方程中,双曲正弦函数的准确度最高。基于双曲正弦函数并引入应变补偿优化后的本构方程可以较为准确地预测30Cr4MoNiV超高强度钢在热加工过程中的流动应力。
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陈刚
姚远超
贾寓真
苏斌
刘国跃
曾斌
关键词:  超高强度钢  热变形行为  本构方程  应变补偿    
Abstract: In this work, the hot deformation behavior of 30Cr4MoNiV ultra-high-strength (UHS) steel is investigated by isothermal compression tests using the Gleeble-3500 thermal simulation machine at 1 173—1 373 K under the strain rate of 0.01—10 s-1, and the optimized constitutive equation with strain-dependent constants suitable for 30Cr4MoNiV UHS steel is established. The results show that the flow stress increases with the increase of the strain rate and the decrease of the deformation temperature. The constitutive equation constructed by hyperbolic sine function has the highest accuracy among the three constitutive equations constructed by power law function, exponential function and hyperbolic sine function. Based on the hyperbolic sine function and the strain-dependent constants, the optimized constitutive equation can accurately predict the flow stress of 30Cr4MoNiV UHS steel in the process of hot processing.
Key words:  ultra-high-strength steel    hot deformation behavior    constitutive equation    strain-dependent constant
出版日期:  2022-11-10      发布日期:  2022-11-03
ZTFLH:  TG142.1  
基金资助: 国家自然科学基金(51971091)
通讯作者:  * chengang@hnu.edu.cn   
作者简介:  陈刚,湖南大学教授、博士研究生导师。2005年6月获得湖南大学材料加工工程博士学位,先后主持或参与了国家“863”、国家科技攻关项目、国家自然科学基金项目、部省级重点项目等40余项。在国内外学术期刊上发表论文80余篇,授权国家发明专利10余项,主要研究方向包括:异种金属焊接、快速凝固与喷射沉积、粉末冶金及金属注射成形、高熵合金及其涂层等。
引用本文:    
陈刚, 姚远超, 贾寓真, 苏斌, 刘国跃, 曾斌. 30Cr4MoNiV超高强度钢热变形本构方程的构建与优化[J]. 材料导报, 2022, 36(21): 21010158-7.
CHEN Gang, YAO Yuanchao, JIA Yuzhen, SU Bin, LIU Guoyue, ZENG Bin. Construction and Optimization of Hot Deformation Constitutive Equation of 30Cr4MoNiV Ultra-high-strength Steel. Materials Reports, 2022, 36(21): 21010158-7.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.21010158  或          http://www.mater-rep.com/CN/Y2022/V36/I21/21010158
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