热处理工艺对Q&P钢微观组织及力学性能的影响  

EFFECT OF HEAT TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF QUENCHING AND PARTITIONING STEEL

作　　者：董辰[1] 江海涛[1] 陈雨来[1] 唐荻[1] 程知松[1] 

机构地区：[1]北京科技大学高效轧制国家工程研究中心,北京100083

出　　处：《上海金属》2009年第4期1-5,共5页Shanghai Metals

基　　金：国家自然科学基金项目(50405015)

摘　　要：Q&P(Quenching and Partitioning)超高强先进汽车用钢,具有优异的综合机械性能。采用井式盐浴炉模拟Q&P钢的热处理工艺,并对其组织性能进行分析研究。结果表明,Q&P热处理工艺决定Q&P钢的组织和力学性能,Q&P钢强塑积可以达到32016 MPa%。其微观组织主要由板条马氏体和残留奥氏体组成,残留奥氏体呈膜状分布。Quenching and Partitioning （Q＆P） steel is a kind of advanced super-high strength steel with excellent synthetic mechanical properties. The microstructure and properties were studied by the heat treatment processes of Q＆P steel simulated in salt bath furnace. The results showed that the microstructure and mechanical properties of Q＆P steel were determined by the quenching and partitioning processes, its strength and ductility could reach 32016MPa%. The main microstructure of Q＆P steel was lath martensite and retained film austenite.

关 键 词：Q&P钢 热处理 板条马氏体 残留奥氏体 力学性能 

分 类 号：TG161[金属学及工艺—热处理] U465.11[金属学及工艺—金属学]