钎焊间隙对C/SiC复合材料与Ti6Al4V合金接头组织和性能的影响  

Effect of brazing clearance on microstructure and properties of C/SiC composite and Ti6Al4V titanium alloy joint

作　　者：吴永智[1] 李海刚[1] 毕建勋[1] 毛建英[1] 宁立芹[1] 梁德彬[1] 

机构地区：[1]航天材料及工艺研究所,北京市100076

出　　处：《焊接》2013年第2期53-55,72,共3页Welding & Joining

摘　　要：采用AgCuTi+SiC连接材料对C/SiC复合材料与Ti6Al4V钛合金进行钎焊,并对钎焊接头进行了室温抗剪强度测试和室温至600℃热震试验。使用扫描电镜(SEM)观察了0.10～0.90 mm钎焊间隙范围内,钎焊接头的界面微观组织情况。结果表明,钎焊间隙为(0.55±0.05)mm时,接头平均抗剪强度值最高,达到141 MPa,且未发现热震裂纹。C/SiC composites and Ti6Al4V titanium alloy were joined by brazing process by using AgCuTi+SiC composite filler metals.The thermal shock behavior and shear strength of the joints were investigated.Interface microstructures and fracture cracks were investigated by scanning electron microscopy(with EDS energy spectrum).The results show that the maximum shear strength is 141 MPa and no crack occurs after 30 times thermal shock testing when the clearance was(0.55±0.05)mm.

关 键 词：C SIC复合材料 TI6AL4V合金 钎焊 间隙 

分 类 号：TG407[金属学及工艺—焊接]