Ultrasonic dissolution of brazing of 55% SiC_p/A356 composites

作     者：张洋 闫久春 陈晓光 崔岩 

作者机构：State Key Laboratory of Advanced Welding Production TechnologyHarbin Institute of Technology 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2010年第20卷第5期

页      面：746-750页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Project(50375039) supported by the National Natural Science Foundation of China Project supported by the Excellence Team Program at the Harbin Institute of Technology,China 

主　　题：aluminum matrix composites brazing ultrasonic dissolution of brazing composite bond 

摘      要：The brazing of 55% SiCp/A356 (volume fraction) composites in air using Zn-Al alloy as a filler metal was *** the brazing process,ultrasonic vibrations were applied to samples for bonding and a significant dissolution of the filler metal into the matrix alloy in the base materials *** brazing temperatures were increased,the thickness of the partial melting layers in the base material *** particles in the partial melting layer of the base material were transferred into the liquid filler under ultrasonic action and a bond with homogeneously distributed reinforcements was obtained after *** volume fraction of SiC particles in the bonds could be varied by changing the brazing *** maximum SiC particle volume fraction of the bond material reached 37% at a brazing temperature of 500 ℃.The shear strength of the brazed bonds was improved at pressures up to 244 MPa (at 20 ℃) and increased by 133.8% (at 200 ℃) compared with the filler of the Zn-based alloy.