Hot deformation behavior of a Nb-containing 316LN stainless steel

被引：41

作者：

Zhang Wenhui ^{[1
]}

Sun Shuhua ^{[1
,2
]}

Zhao Deli ^{[4
]}

Wang Baozhong ^{[4
]}

Wang Zhenhua ^{[1
,3
]}

Fu Wantang ^{[1
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China

[2] Yanshan Univ, Coll Sci, Qinhuangdao 066004, Peoples R China

[3] Yanshan Univ, Coll Mech Engn, Qinhuangdao 066004, Peoples R China

[4] China First Heavy Ind, Qiqihar 161042, Peoples R China

来源：

MATERIALS & DESIGN | 2011年 / 32卷 / 8-9期

关键词：

Forging; Microstructure; Plastic behavior; HIGH-TEMPERATURE DEFORMATION; DYNAMIC RECRYSTALLIZATION; TENSILE PROPERTIES; PROCESSING MAPS; ALLOY; MAGNESIUM; IMPACT;

D O I：

10.1016/j.matdes.2011.04.043

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A Nb-containing 316LN stainless steel was compressed in the temperature range 900-1200 degrees C and strain rate range 0.01-10 s(-1). The mechanical behavior has been characterized using stress-strain curve analysis, kinetic analysis, processing maps, etc. The microstructural evolution was observed and the mechanism of flow instability was discussed. It was found that the work hardening rate and flow stress decreased with increasing deformation temperature and decreasing strain rate. On the contrary, the efficiency of power dissipation increased with them; Flow instability was manifested as cracking and flow localization; The hot deformation equation and the relationships between deformation condition and dynamic recrystallization grain size and fraction were obtained; For Nb-containing 316LN stainless steel, the favorite nucleation sites for dynamic recrystallization are in sequence of triple point, grain boundary, twin boundary and intragranular deformation band; The suggested processing window is given. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：4173 / 4179

页数：7

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