合金元素对Fe-Mn-C系TWIP钢力学行为的影响

采用热力学计算、静态拉伸、XRD、OM与SEM等方法分析了Fe-Mn-C系TWIP钢中合金元素对基体力学行为的影响.结果表明：TWIP钢中Mn含量增加时,基体的屈服强度和抗拉强度均减小,总伸长率增大;C含量增加时,其屈服强度和抗拉强度先增大后减小,在0.6％（质量分数,下同）时存在最大值;当Mn含量为20％时,TWIP钢总伸长率随C含量增加而增大,而Mn含量为22％时则相反.TWIP钢的强塑积随Mn含量的增加而增大,其在C含量为0.4％试样中的体现尤为明显.对于Mn含量为20％的TWIP钢,其强塑积随C含量增加而增大;而对于Mn含量为22％的TWIP钢,其强塑积随C含量增加而减小....

Full description

Saved in:
Bibliographic Details
Published in材料工程 Vol. 43; no. 9; pp. 30 - 38
Main Author 王玉昌 兰鹏 李杨 张家泉
Format Journal Article
LanguageChinese
Published 北京科技大学钢铁冶金新技术国家重点实验室,北京,100083 2015
Subjects
TWIP钢
力学行为
合金元素
层错能
TWIP钢
合金元素
alloying element
层错能
TWIP steel
力学行为
mechanical behavior
stacking fault energy
Online AccessGet full text

Cover

More Information
Summary:采用热力学计算、静态拉伸、XRD、OM与SEM等方法分析了Fe-Mn-C系TWIP钢中合金元素对基体力学行为的影响.结果表明：TWIP钢中Mn含量增加时,基体的屈服强度和抗拉强度均减小,总伸长率增大;C含量增加时,其屈服强度和抗拉强度先增大后减小,在0.6％（质量分数,下同）时存在最大值;当Mn含量为20％时,TWIP钢总伸长率随C含量增加而增大,而Mn含量为22％时则相反.TWIP钢的强塑积随Mn含量的增加而增大,其在C含量为0.4％试样中的体现尤为明显.对于Mn含量为20％的TWIP钢,其强塑积随C含量增加而增大;而对于Mn含量为22％的TWIP钢,其强塑积随C含量增加而减小.
Bibliography:11-1800/TB
TWIP steel ; alloying element ; mechanical behavior; stacking fault energy
WANG Yu-chang, LAN Peng, LI Yang, ZHANG Jia-quan （State Key Laboratory of Advanced Metallurgy,University of Science ~ Technology Beijing,Beijing 100083, China）
The effect of alloying elements on mechanical behavior of Fe-Mn-C TWIP steels was investigated by thermodynamic calculation, static tensile test, XRD, OM and SEM. Results indicate that with manganese content increasing, the yield strength and tensile strength of TWIP steels decrease, while the total elongation varies oppositely. As carbon content increases, the yield strength and tensile strength increase initially and then decline with the maximum located near 0.6% （mass fraction） carbon. When Mn is at 20%, the elongation of TWIP steel increases with carbon content increasing, but exhibits reversed trend in the steels with 22% manganese. The product of tensile strength and elongation increases with manganese content increasing, and it is more obvious in the TWIP steels
ISSN:1001-4381
1001-4381
DOI:10.11868/j.issn.1001-4381.2015.09.006