Microstructure and mechanical properties of C/C composite/TC4 joint using AgCuTi filler metal

被引：53

作者：

Qin, Youqiong ^{[1
]}

Feng, Jicai ^{[1
]}

机构：

[1] Harbin Inst Technol, Natl Key Lab Adv Welding Prod Technol, Harbin 150001, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 454卷

基金：

中国国家自然科学基金;

关键词：

C/C composite; brazing; AgCuTi; microstructure; shear strength;

D O I：

10.1016/j.msea.2006.11.056

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

C/C composites and a titanium alloy were joined using AgCuTi filler metal at 860-1000 degrees C for 3-30 min. The effects of brazing parameters on the microstructures of the brazed joint were investigated by SEM, EDS and XRD. The mechanical properties of the brazed joints were measured by an Inston-1186 mechanical testing machine. The results show that the brazed joint mainly consists of TiC, TiCu, Ti3Cu4 and Ti2Cu reaction products. TiC + C/TiCu reaction layers are formed near C/C composite while Ti3Cu4/TiCu/Ti2Cu/Ti2Cu + Ti (s.s) reaction layers are formed near TC4. The thickness of reaction layers of the brazed joint increases while the amount of TiCu + Ti3Cu4 in the middle of the filler metal decreases with the increased brazing temperature or holding time. The maximum shear strength of the brazed joints is 25 MPa at brazing temperature T = 910 degrees C and holding time t = 10 min. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：322 / 327

页数：6

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