恒温保持对12Cr1MoV钢显微组织和力学性能的影响  

Effect of Holding Time on Microstructure and Mechanical Properties of 12Cr1MoV Steel

作　　者：黄永长[1] 郭二军[1] 张涛[2] 王丽萍[1] 

机构地区：[1]哈尔滨理工大学材料科学与工程学院,黑龙江哈尔滨150080 [2]哈尔滨工程大学机电工程学院,黑龙江哈尔滨150001

出　　处：《机械工程师》2004年第2期44-46,共3页Mechanical Engineer

摘　　要：研究了不同恒温保持时间(0～1500h)对12Cr1MoV钢的显微组织和力学性能的影响.结果表明,随着恒温保持时间的延长,12CrlMoV钢的显微组织由回火马氏体转变为低碳板条束贝氏体,σb升高;σ0.2、δ、ψ、CVN先降低后升高,在恒温保持500h取得最小值,材料最容易发生脆性断裂.The effect of holding time(0～1500h)on microstructure and mechanical properties of12Cr1MoV steel is studied-results show that with the holding time prolonged-the microstructure of12Cr1MoV steel varied from temper martensite to lo w carbon bar bainite and the tensile strength was increased-the yield strength-elongation-cross-section and impact toughness began to decreased after gradual increased.When the holding time is500h they arrived at minimun-the brittle fracture of12Cr1MoV steel easily occurred.

关 键 词：12CR1MOV钢 力学性能 组织分析 脆性断裂 

分 类 号：TG142.1[一般工业技术—材料科学与工程]