Deformation Behavior and Processing Map during Isothermal Hot Compression of 49MnVS3 Non-Quenched and Tempered Steel

被引：4
作者：
Wang, Qingjuan [1 ]
Shi, Jiamin [1 ]
Cai, Jun [1 ]
Feng, Yaoyao [1 ]
机构：
[1] Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Shaanxi, Peoples R China
来源：
HIGH TEMPERATURE MATERIALS AND PROCESSES | 2019年 / 38卷 / 2019期
基金：
中国国家自然科学基金;
关键词：
49MnVS3 non-quenched and tempered steel; hot deformation behavior; constitutive equation; processing map; microstructure; HIGH-TEMPERATURE DEFORMATION; CONSTITUTIVE EQUATION; MECHANICAL-PROPERTIES; HIGH-STRENGTH; COOLING RATE; MICROSTRUCTURE; WORKING; AL;
D O I：
10.1515/htmp-2018-0042
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The deformation behavior of 49MnVS3 non-quenched and tempered steel was studied using isothermal compression tests at the temperature range of 750-1000 degrees C and the strain rate range of 0.1-50 s(-1) on a Gleeble-3500 thermal mechanical simulator. The results indicated that the flow stress increases significantly with decreasing temperature and increasing strain rate. Under the whole deformation conditions, the dependence of flow stress on deformation temperature and strain rate was analyzed by hyperbolic sine equation. Besides, the hot deformation activation energy and stress exponent were calculated to be 323.56 kJ/mol and 6.99, respectively. In addition, the processing map based on dynamic material model was established, and the optimum processing condition of the 49MnVS3 non-quenched and tempered steel can be determined to be at the temperature range of 809-850 degrees C and strain rate of 36.6 s(-1)-50 s(-1).
引用
收藏
页码：452 / 460
页数：9
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