文献类型：期刊文献

英文题名：Brazing Mechanism of 70% SiCp/Al Composites with Ti Foam/AlSiMg Filler Metal

作者：Li Juan Zhao Honglong Yingzhe, Zhang Qin Qingdong He Peng

第一作者：黎佳;Li Juan

通信作者：Li, J[1];Li, J[2]

机构：[1]Guizhou Inst Technol, Key Lab Light Met Mat Proc Technol Guizhou Prov, Guiyang 550003, Peoples R China;[2]Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Key Lab Light Met Mat Proc Technol Guizhou Prov, Guiyang 550003, Peoples R China;corresponding author), Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China.|贵州理工学院;

年份：0

外文期刊名：JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE

收录：;EI(收录号：20224513058954);Scopus(收录号：2-s2.0-85141093207);WOS:【SCI-EXPANDED(收录号:WOS:000878023600003)】；

基金：The authors gratefully acknowledge the supports of the National Natural Science Foundation of China (Grant No. 51964011), the Natural Science Foundation of Guizhou Province (Qian Ke He J [2020] 1Y235), the Education Department Youth Science and Technology Talent Growth Project of Guizhou Province (Qian Jiao He KY [2018] 245), Special Project for Cultivation and Innovation Exploration of New Academic Talents of Guizhou Institute of Technology (GZLGXM-13) and the High Level Talent Program of Guizhou Institute of Technology (XJGC20190916).

语种：英文

外文关键词：brazing; mechanism; Ti foam; SiCp; Al composite

摘要：To explore suitable filler metal for high-volume fraction SiCp/Al composites, 70% SiCp/Al composites were brazed with AlSiMg, AlSiMg6.0Ti and Ti foam/AlSiMg filler metals. The joints were examined using scanning electron microscopy (SEM), energy dispersive spectroscopy, electron probe microanalysis (EPMA), transmission electron microscopy (TEM), x-ray diffraction (XRD), and shear tests to reveal the microstructure evolution and the brazing mechanism. The results showed that the joints brazed with Ti foam/AlSiMg had the highest shear strength (119.0 MPa). The microstructure of the joint consisted mainly of a Ti7Al5Si12 interfacial layer, as well as Ti(Al,Si)(3) compounds and a Ti matrix weld that was in-situ reinforced with TiAl nanoparticles. The microstructure evolution of the joints filled with Ti foam/AlSiMg was further studied by subjecting them to different temperatures and holding times. The results indicate that the joints achieved at 700 degrees C, 60 min and 10 MPa had a complete and dense Ti7Al5Si12 interfacial layer, which can improve the interfacial adhesion between the weld seam and the base material. However, with further extension of the holding time, the Ti7Al5Si12 interfacial layer gradually broke and loosened, which deteriorated the performance of the joint.