ASP60粉末高速钢与W18Cr4V热压扩散焊工艺与焊接性能研究  

Welding Process and Welding Performance of ASP60 Powder Metallurgy High-Speed Steel and W18Cr4V by Hot Press Diffusion Welding

作　　者：李苏望 张乾坤[1] 肖逸锋[1] 贺跃辉[2] 陈泽民 唐俊 LI Su-wang;ZHANG Qian-kun;XIAO Yi-feng;HE Yue-hui;CHEN Ze-min;TANG Jun(School of Mechanical Engineering,Xiangtan University,Xiangtan 411105,China;Powder Metallurgy Research Institute,Central South University,Changsha 410083,China)

机构地区：[1]湘潭大学机械工程学院,湖南湘潭411105 [2]中南大学粉末冶金研究院,长沙410083

出　　处：《精密成形工程》2021年第2期21-26,共6页Journal of Netshape Forming Engineering

基　　金：国家自然科学基金(51704257);湖南省长沙市联合基金(2019JJ60019)。

摘　　要：目的研究采用ASP60粉末高速钢与W18Cr4V高速钢异种材料焊接的方式,以降低高性能粉末高速钢材料的损耗率,提高生产效益,同时摸索出具有优异接口组织和界面结合力的焊接工艺。方法通过单一变量的原则研究焊接温度、压力以及保温时间对焊接性能的影响,同时根据各组参数下接口处的宏观形貌、力学性能及微观组织(SEM),分析确定出最佳的焊接工艺。结果当焊接温度为1000℃,焊接压力为25 MPa,焊接保温时间为30 min时,材料获得最佳的焊接性能,此时材料拉伸强度为1157 MPa,且断口沿W18Cr4V一侧断裂。结论焊接温度、压力以及保温时间均对材料的焊接性能起着至关重要的作用。The work aims to study dissimilar material welding of ASP60 powder high-speed steel and W18Cr4V high-speed steel to reduce the loss rate of high-performance powder high-speed steel,improve production efficiency and explore welding process with excellent interface microstructure and interface bonding force at the same time.The influence of welding temperature,pressure and holding time on the welding properties were studied by the principle of single variable,and the optimal welding process was determined according to the macro morphology,mechanical properties and microstructure(SEM)of the interface under each parameters.The results showed that when the welding temperature was 1000℃,the welding pressure was 25 MPa and the welding holding time was 30 min,the best welding performance was obtained.At this time,the tensile strength of the material was 1157 MPa,and the fracture was broken along the W18Cr4V side.It is found that welding temperature,pressure and holding time play an important role in the welding performance of the material.

关 键 词：热压扩散焊 焊接参数 组织 拉伸强度 

分 类 号：TG457.11[金属学及工艺—焊接]