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

作　　者：索忠源[1,2] 杜阳 付立铭[2] 单爱党[2] 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)

机构地区：[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

出　　处：《金属热处理》2020年第9期125-128,共4页Heat Treatment of Metals

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.

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 

分 类 号：TG142.3[一般工业技术—材料科学与工程]