不同热处理工艺下驱动轴的组织与力学性能研究  

Study on Microstructure and Mechanical Properties of Drive Shaft with Different Heat Treatment Processes

作　　者：李香燕[1] 王茜[1] LI Xiangyan;WANG Qian(College of Mechanical Engineering,Shangqiu Insititute of Technology,Shangqiu 476000,China)

机构地区：[1]商丘工学院机械工程学院,河南商丘476000

出　　处：《热加工工艺》2020年第24期113-115,118,共4页Hot Working Technology

基　　金：河南省科技攻关项目(142102210267)。

摘　　要：采用金相显微镜、洛氏硬度计、拉伸试验机、静扭试验机对两种不同工艺的驱动轴进行组织和力学性能分析,结果表明:驱动轴的表面感应淬火区域组织为马氏体。采用了调质工艺的驱动轴,其心部发生了部分高温转变,淬硬层较深;而未采用调质工艺的驱动轴,其心部仍然保持原来热轧态的组织,淬硬层较浅。前者的力学性能优于后者的力学性能,两种工艺的静扭强度均满足技术要求,但是后者的疲劳试验次数不满足技术要求。The microstructure and mechanical properties of the drive shaft were analyzed by metallographic microscope,Rockwell hardness tester, tensile tester and static torsion tester. The results show that the surface induced quenching zone of the drive shaft is martensite. The drive shaft with tempering process is adopted, and the core part of the shaft is changed at high temperature, and the hardened layer is deeper. However, the core of the drive shaft which is not quenched and tempered is still kept in the original hot-rolled state and the hardened layer is shallow. The mechanical properties of the former are better than those of the latter, and the static and torsional strength of both processes meet the technical requirements, but the fatigue test times of the latter do not meet the technical requirements.

关 键 词：驱动轴 显微组织 力学性能 调质态 热轧态 

分 类 号：TG156[金属学及工艺—热处理]