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。
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℃ to 830℃,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℃,and the relationship between the impact absorbed energy and the ferrite content is linear.
作者
索忠源
杜阳
付立铭
单爱党
Suo Zhongyuan;Du Yang;Fu Liming;Shan Aidang(College of Mechanical and Electrical Engineering,Jilin Institute of Chemical Technology,Jilin Jilin 132022,China;School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2020年第9期125-128,共4页
Heat Treatment of Metals
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
ferrite/martensite dual-phase steel
intercritical annealing
microstructure
mechanical properties
