10钢/35CrMnSi径向摩擦焊接头的力学性能及组织特征  

Mechanical Properties and Microstructure Characteristics of Radial Friction Welding Joint of 10 Steel and 35CrMnSi

作　　者：陈大军[1] 李忠盛[1] 张隆平[1] 戴明辉[1] 代野[1] 付扬帆[1] CHEN Da-jun;LI Zhong-sheng;ZHANG Long-ping;DAI Ming-hui;DAI Ye;FU Yang-fan(Southwest Institute of Technique and Engineering, Chongqing 400039, China)

机构地区：[1]西南技术工程研究所,重庆400039

出　　处：《精密成形工程》2018年第2期117-121,共5页Journal of Netshape Forming Engineering

摘　　要：目的研究10钢/35CrMnSi惯性径向摩擦焊接头的力学性能和组织特征。方法通过对10钢/35CrMnSi进行惯性径向摩擦焊接试验,采用OM、超声检测、万能材料试验机及显微硬度仪对接头的微观组织及力学性能进行表征。结果 10钢/35CrMnSi惯性径向摩擦焊接头焊合区内未发现裂纹、夹渣、未熔合等焊接缺陷,焊合率100%;接头显微硬度分布呈现出中间高两头低的特征,平均剪切强度达520 MPa,略高于10钢母材;焊接界面为明显的"锯齿状"咬和,35CrMnSi侧的热影响区由细小马氏体和少量贝氏体组织,10钢侧形成了一层具有明显金属流线的塑性变形层,靠近焊接界面的塑性变形层为厚度约150μm的细晶区,其组织为少量马氏体和铁素体。结论采用惯性径向摩擦焊技术实现了10钢/35CrMnSi异种金属的高强连接。The paper aims to study mechanical properties and microstructure characteristics of joint of10steel/35CrMnSi by inertia radial friction welding.The inertia radial friction welding of10steel/35CrMnSi was tested.Microstructure characterization and mechanical properties of welding joints were studied with OM,ultrasonic testing,universal material testing machine and micro-hardness tester.The results show that the crack,slag and incomplete fusion were not found in weld zone of inertia radial friction welding joint of10steel and35CrMnSi.The bonding rate was100%.The micro-hardness curve of welding joint was high in the middle and low at two ends.The average shear strength of the welding joints could be up to520MPa,which was higher than that of10steel base metal.There was obvious serrated bite at the welding interface.The HAZ in35CrMnSi side was fine martensite and a few bainite.And a plastic deformation layer with obvious metal streamline was formed in10steel side.The plastic deformation layer near the welding interface was a fine grain region with a thickness of about150μm.Few martensite and ferrite of microstructure were in the fine grain region.The results show that dissimilar metals of10steel and35CrMnSi can be welded with high-strength by inertia radial friction welding.

关 键 词：惯性径向摩擦焊 异种金属 力学性能 显微组织 

分 类 号：TG453[金属学及工艺—焊接]