脉冲磁场强度对Cr5钢等温贝氏体转变的影响  

Effect of pulse magnetic field intensity on Cr5 steel isothermal bainitic transformation

作　　者：南文明 李莉娟[1] 李青春[2] 翟启杰[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072 [2]辽宁工业大学材料科学与工程学院,辽宁锦州121001

出　　处：《金属热处理》2017年第1期40-43,共4页Heat Treatment of Metals

基　　金：国家自然科学基金(51204092)

摘　　要：分别在Cr5钢等温贝氏体转变阶段施加0.5、1、1.5 T脉冲磁场,并与相同工艺下的正常等温贝氏体转变比较,研究不同强度脉冲磁场对Cr5钢等温贝氏体转变组织与性能的影响。结果表明,与正常等温贝氏体转变相比较,在Cr5钢等温贝氏体转变阶段施加脉冲磁场,随着磁场强度的提高,试样贝氏体转变量增多,残留奥氏体含量减少,抗压强度、压缩率和硬度降低。0.5, 1 and 1.5 T pulse magnetic field was exerted upon isothermal bainite transformation process, and it was compared with normal isothermal bainite transformation in the same process to investigate the effect of pulse magnetic field on microstructure and performance in isothermal bainite transformation process of Cr5 steel. The results show that compared with the normal isothermal bainite transformation, with the improvement of the intensity of the pulse magnetic field, bainite content of the sample increases, the retained austenite fraction decreases, the compressive strength, compression ratio and hardness reduce.

关 键 词：Cr5钢 脉冲磁场 贝氏体 

分 类 号：TG156.1[金属学及工艺—热处理]