热处理对3.5Ni钢低温韧性的作用  

Effect of Heat Treatment on Low-temperature Toughness of 3.5Ni Steel

作　　者：李建华[1,2] 习天辉[2] 陈晓[1,2] 

机构地区：[1]武汉科技大学,湖北武汉430081 [2]武钢研究院,湖北武汉430080

出　　处：《物理测试》2008年第6期9-12,共4页Physics Examination and Testing

摘　　要：介绍了3.5Ni低温钢的热处理工艺对力学性能和微观组织结构影响的试验内容,结果表明,热轧状态的3.5Ni低温钢进行热处理,可以进一步细化晶粒和调整组织,提高综合力学性能。850℃正火及850℃正火+600℃回火处理均可以得到比较理想的低温韧性。The effect of heat treatment process on mechanical performance and microstructure of 3.5Ni low-temperature steel was introduced in this paper. The result shows that the heat treatment of rolled 3.5Ni low-temperature steel can improve the mechanical performance by fining grain size and adjusting microstructure. Excellent low-tem-perature toughness can be gained by 850℃ normalized or 850 ℃ normalizing followed by 600℃ tempering.

关 键 词：3.5NI钢 热处理 低温韧性 

分 类 号：TG161[金属学及工艺—热处理]