Transactions of Materials and Heat Treatment

Title：Thermal deformation behavior and high temperature plastic constitutive equation of ESR steel 316LN

Authors： Ren Shulan Liu Jiansheng Li Jingdan Wang Rui Duan Xingwang

Unit： Taiyuan University of Science and Technology

KeyWords： steel 316LN ESR（Electroslag Remelting） hot deformation activation energy constitutive equation dynamic recrystallization

ClassificationCode：TG316

year,vol(issue):pagenumber：2017,42(10):162-165

Abstract：

In order to study the deformation behavior and establish the plastic constitutive equation at high temperature of ascast ESR steel 316LN, the isothermal compression test of steel 316LN was conducted by Gleeble-1500D thermal simulation testing machine. Then, the thermal deformation behavior of ESR steel 316LN at deformation temperatures of 900-1200 ℃, strain rates of 0.001-1 s-1 and the maximum deformation of 55% was studied, and the corresponding flow stress and strain curves were investigated. The results show that under the conditions of high deformation temperature and low strain rate, the dynamic recrystallization is more conducive to occur. By the multiple linear regression calculation on experimental data, the hot deformation activation energy is obtained and the high temperature plastic constitutive equation of ESR steel 316LN is established.

Funds：

太原科技大学博士启动基金项目（20142010）

作者简介：任树兰（1991-），女，硕士研究生，E-mail：460454187@qq.com；通讯作者：刘建生（1958-），男，博士，教授，博士生导师，E-mail：jiansliu@163.com

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