Effect of Ni-Ti filler on brazed W-Cu/18-8 joints

被引：8
作者：
Xia, Chunzhi [1 ]
Sun, Weiwei [1 ]
Zhou, Yi [1 ]
Zhao, Meng [1 ]
机构：
[1] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2018年 / 259卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
W-Cu composite; Vacuum brazing; Active element; Fracture morphology; CU; TUNGSTEN; STEEL; ALLOY;
D O I：
10.1016/j.jmatprotec.2018.04.018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
W-Cu composite and 18-8 stainless steel were vacuum brazed with an improved Ni-based filler metal, with varying Ti content. The microstructure, element distribution, phase composition, and fracture mechanism of the brazed joints were investigated. The improved NiCrSiBFe-Ti quench filler metal showed good wettability on the W-Cu composite and 18-8 stainless steel. Enhanced diffusion and metallurgical reactions between the filler metal and base metal were observed. The addition of Ti not only optimized the structure, but also reduced the formation of brittle intermetallic compounds, which is important for significantly improving the brazed joint strength. The highest brazed-joint shear strength (381 MPa) was observed when the Ti content was 1.6%.
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收藏
页码：15 / 22
页数：8
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