退火温度对铁素体/马氏体双相钢组织及性能的影响

doi:10.13251/j.issn.0254-6051.2020.09.023

金属热处理 ›› 2020, Vol. 45 ›› Issue (9): 125-128.DOI: 10.13251/j.issn.0254-6051.2020.09.023

退火温度对铁素体/马氏体双相钢组织及性能的影响

索忠源^1,2, 杜阳¹, 付立铭², 单爱党²

1.吉林化工学院机电工程学院,吉林吉林 132022;
2.上海交通大学材料科学与工程学院,上海 200240

收稿日期:2020-03-19 出版日期:2020-09-25 发布日期:2020-12-29
通讯作者: 单爱党,教授,E-mail:adshan@sjtu.edu.cn
作者简介:索忠源(1979—),男,副教授,博士,主要研究方向为耐热及高强金属的组织与性能,E-mail:zhy_suo@126.com

Effect of annealing temperature on microstructure and properties of ferrite/martensite dual-phase steel

Suo Zhongyuan^1,2, Du Yang¹, Fu Liming², Shan Aidang²

1. College of Mechanical and Elctrical Engineering,Jilin Institute of Chemical Technology,Jilin Jjilin 132022,China;
2. School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

Received:2020-03-19 Online:2020-09-25 Published:2020-12-29

摘要/Abstract

摘要： 利用扫描电镜、室温拉伸、冲击测试等试验方法,采用两相区退火,研究了退火温度对铁素体/马氏体双相钢组织和性能的影响。结果表明:试验钢热轧态组织为铁素体+马氏体,铁素体含量为32.8%;随着两相区退火温度由720 ℃逐渐提高至830 ℃,铁素体含量由45.7%降低到23.6%,马氏体含量逐渐提高;试验钢的屈强比由热轧态的50%,提高至830 ℃退火后的60%;试验钢的冲击吸收能量与铁素体含量成线性关系。

关键词: 铁素体/马氏体双相钢, 两相区退火, 微观组织, 力学性能

Abstract: Effect of intercritical annealing temperature on the microstructure and mechanical properties of a ferrite/martensite dual-phase steel was investigated by means of scanning electron microscopy (SEM),room-temperature tensile and impact tests.The results show that the microstructure of the hot rolled dual-phase steel is composed of ferrite+martensite,and the content of ferrite is 32.8%.With the annealing temperature increasing from 720 C to 830 9C,the ferrite content decreases from 45.7% to 23.6%,and the martensite content increases gradually.The yield ratio of the tested steel is increased from 50% of that hot rolled to 60% of that annealed at 830 C,and the relationship between the impact absorbed energy and the ferrite content is linear.

Key words: ferrite/martensite dual-phase steel, intercritical annealing, microstructure, mechanical properties

中图分类号:

TG142.3

索忠源, 杜阳, 付立铭, 单爱党. 退火温度对铁素体/马氏体双相钢组织及性能的影响[J]. 金属热处理, 2020, 45(9): 125-128.

Suo Zhongyuan, Du Yang, Fu Liming, Shan Aidang. Effect of annealing temperature on microstructure and properties of ferrite/martensite dual-phase steel[J]. Heat Treatment of Metals, 2020, 45(9): 125-128.

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退火温度对铁素体/马氏体双相钢组织及性能的影响

Effect of annealing temperature on microstructure and properties of ferrite/martensite dual-phase steel

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