Effect of Temperature and Strain Rate on the Hot Deformation Behaviour of Ferritic Stainless Steel

被引：29
作者：
Zu, Guoqing [1 ,2 ]
Lu, Yukuan [1 ]
Yan, Yi [2 ,3 ]
Zhang, Xiaoming [4 ]
Zhao, Jingwei [2 ]
Du, Wei [5 ]
Ran, Xu [1 ]
Jiang, Zhengyi [2 ]
机构：
[1] Changchun Univ Technol, Key Lab Adv Struct Mat, Minist Educ, Changchun 130012, Peoples R China
[2] Univ Wollongong, Sch Mech Mat Mechatron & Biomed Engn, Wollongong, NSW 2522, Australia
[3] Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Jiangxi, Peoples R China
[4] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China
[5] Baoshan Iron & Steel Co Ltd, R&D Ctr, Baosteel Res Inst, Stainless Steel Tech Ctr, Shanghai 200431, Peoples R China
来源：
METALS AND MATERIALS INTERNATIONAL | 2020年 / 26卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Ferritic stainless steel; Plain strain compression; Constitutive model; Flow behaviour; Dynamic recrystallisation; ZENER-HOLLOMON PARAMETER; CONTINUOUS DYNAMIC RECRYSTALLIZATION; NICKEL-BASED SUPERALLOY; MECHANICAL-PROPERTIES; MICROSTRUCTURE EVOLUTION; SOFTENING MECHANISM; MAGNESIUM ALLOY; GRAIN-SIZE; ALUMINUM; TEXTURE;
D O I：
10.1007/s12540-019-00316-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The flow behaviour and microstructure characteristics of a ferritic stainless steel were investigated using plain strain compression test on a Gleeble 3500 thermo-mechanical test simulator with a hydrawedge system in the temperature range of 850-1100 degrees C and strain rate range of 0.1-50 s(-1). The phenomenological constitutive model and the relationship between the Zener-Hollomon (Z) parameter and flow stress were established. The results reveal that the flow softening phenomenon occurs at high strain rate, which is caused by the coupling effect of the adiabatic heating and dynamic recrystallisation (DRX). New grains nucleate preferentially at the original grain boundaries by strain-induced grain boundary migration. With an increase of temperature or strain rate, a part of new grains form in the interior of deformed grains. The DRX grain size and fraction increase with the increase of temperature, however, exhibit a non-linear relationship with strain rate.
引用
收藏
页码：248 / 259
页数：12
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