钛合金线性摩擦焊残余应力测试  

Residual Stress Test of Linear Friction Welding of Titanium-Alloy

作　　者：李晶[1] 张田仓[1] 孙成彬[1] 

机构地区：[1]北京航空制造工程研究所

出　　处：《航空制造技术》2010年第11期89-91,共3页Aeronautical Manufacturing Technology

摘　　要：采用X射线衍射法对钛合金线性摩擦焊试件的表面残余应力进行了测试。结果表明线性摩擦焊焊缝中心X、Y两个方向均为拉应力,Y向应力值明显大于X向,焊缝热影响区为压应力,由焊缝向外应力逐渐趋向于0。经真空热处理后,试件各区域应力值都有不同程度的降低。从整体来看,热处理后试件表面残余应力趋于均匀化。X-ray diffraction approach is used to test the residual stress of the surface of the linear friction welding of titanium-alloy. It is proved that the residual stress in X and Y direction in the center of the welding is tension stress, and the stress in Y direction is obviously stronger than that in X direction. The stress in the heat affects zone of the welding is compressive stress, and the value of stress tends to zero from the center of the welding to the out zone. The stress values decrease to varying degrees in all regions of specimen after vacuum heat treatment. Overall, the residual stress of the surface tends to uniformity after heat treatment.

关 键 词：X射线衍射法 残余应力 钛合金 

分 类 号：TG404[金属学及工艺—焊接]