中国焊接(英文版)
中國銲接(英文版)
중국한접(영문판)
CHINA WELDING
2003年
2期
107-111
,共5页
邹家生%许如强%赵其章%陈铮%Chen Zheng
鄒傢生%許如彊%趙其章%陳錚%Chen Zheng
추가생%허여강%조기장%진쟁%Chen Zheng
aluminum matrix composites%vacuum brazing%induction brazing%joint strength%fracture analyzing
The vacuum induction brazing of SiC particulate reinforced LY12 alloy matrix composite using Al-28Cu-5Si-2Mg filler metal has been carried out. The micrograph of the joint interface was observed by scanning electron microscopy. The joint strength was determined by shear tests. The results show that brazing temperature, holding time, SiC particle volume percentage and post heat treatment influence joint strength. SiC particles happen in the brazing seam and the distribution of SiC particles in the joint is not uniform. Particle-poor zones in the joint exist near the base metal, and particle concentrate zones exist in the center of the brazing seam. In addition, the failure of the composite is predominantly initiated by the rooting of SiC particle in the brazing seam and the micro-crack expanded along the brazing seam with low energy.
