摘要
采用Ｘ射线宏观应力测试方法，测量ＳｉＣｗ／ＬＤ２复合材料的热残余应力，应用盲孔及电阻应变片技术，研究热残余应力对宏观应变释放的影响。结果表明，热残余应力在材料表面呈三向拉应力状态，且不能引起宏观应变释放，是伪宏观残余应力。冷处理可降低复合材料的热残余应力。
The thermal residual stress of SiCw/6061A1 composites was measured by using the X ray deffraction method.The blind hole and resistance strainmeter were used to study the infyuence of thermal residual stress on the release of macro strain.The results show that the residual stress on the surface of composites takes a triangle tenson state and can not lead the release of macro stain,which is a false macro residual stress. The thermal residual stress of composites can be reduced by cold treatments.
出处
《材料科学与工艺》
EI
CAS
CSCD
1997年第1期111-113,共3页
Materials Science and Technology
