65Mn钢弹簧垫圈断裂分析  

Fracture analysis of 65Mn steel spring washers

作　　者：佟倩[1] 张玮[1] 王猛[1] 孙齐松[1] 柳洋波[1] 

机构地区：[1]首钢技术研究院,北京100043

出　　处：《金属热处理》2015年第9期205-208,共4页Heat Treatment of Metals

摘　　要：65Mn钢盘条在放置过程中出现部分盘条自然断裂,并且在压扁卷簧时发生断裂。通过化学成分分析、断口分析、金相检验等方法,对65Mn盘条和成品的断裂原因进行了分析。结果表明,贝氏体组织是造成65Mn钢盘条自断及卷簧过程中断裂的主要原因。结合65Mn钢贝氏体组织形成条件和生产实际,解释了贝氏体形成的原因,由此提出了改进措施。65Mn steel wire rods fractured in conventional condition before drawn, while some fractured in flattening process. In order to analyze the fracture reason of 65Mn steel, the analysis such as chemical composition, fracture appearance and the microstructure were conducted. The results indicate that the main reason of the fracture is due to bainites structure existing in wire rods. The appearance of bainite is explained from its formation condition and the practical production of 65 Mn steel, and the prevention measures is proposed as well.

关 键 词：65Mn钢盘条 弹簧垫圈 断裂 贝氏体 

分 类 号：TG115.2[金属学及工艺—物理冶金]