双重正火对ZG31Mn2SiREB钢组织及性能的影响  

Effect of double normalization on microstructure and properties of ZG31Mn2SiREB steel

作　　者：王宇飞[1,2] 白翎 任凤章[1] 罗影[4] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003 [2]河南省有色金属材料科学与加工技术重点实验室,河南洛阳471003 [3]中国-拖集团有限公司,河南洛阳471004 [4]兰州理工大学材料科学与工程学院,甘肃兰州730050

出　　处：《金属热处理》2010年第8期57-60,共4页Heat Treatment of Metals

基　　金：河南省高校科技创新人才支持计划(2009HASTIT023);国家自然科学基金项目(50771042)

摘　　要：以履带板用钢ZG31Mn2SiREB为研究对象,在880℃正常淬火前分别对其进行了1050℃一次正火和1050℃/900℃双重正火预处理,研究了不同预处理工艺对其淬火组织和力学性能的影响。结果表明,ZG31Mn2SiREB钢铸态组织粗大不均,直接淬火后组织及显微硬度分布极不均匀,冲击功较低,一次正火后组织及性能有所改善,而双重正火后的组织均匀细小,显微硬度分布更为均匀,冲击功明显提高。Per-heat treatment experiments including normalizing at 1050 ℃ and double normalizing at 1050 ℃/900 ℃ were carried out on ZG31Mn2SiREB steel for track plate.The effect of pre-heat treatment process on microstructure and mechanical properties of quenched ZG31Mn2SiREB steel was investigated.The results show that the as-cast microstructure of ZG31Mn2SiREB steel is coarse and uneven,its microhardness distribution after direct quenching is extremely uneven,and the impact energy is low,the microstructure and mechanical properties of ZG31Mn2SiREB steel are improved by single normalizing,especially by double normalizing,the microstructure is fine,the microhardness distribution is even and the impact energy is enhanced greatly.

关 键 词：ZG31Mn2SiREB钢 履带板 双重正火 组织与性能 

分 类 号：TG156.35[金属学及工艺—热处理]