Microstructure and interfacial reactions of vacuum brazing titanium alloy to stainless steel using an AgCuTi filler metal

被引：104
作者：
Yue, X. [1 ]
He, P. [1 ]
Feng, J. C. [1 ]
Zhang, J. H. [1 ]
Zhu, F. Q. [1 ]
机构：
[1] Harbin Inst Technol, Natl Key Lab Adv Welding Prod Technol, Harbin 150001, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2008年 / 59卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Microstructure; Interfacial reaction; Vacuum brazing; Titanium alloy; AgCuTi filler metal;
D O I：
10.1016/j.matchar.2008.03.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and interfacial reactions of the vacuum brazed titanium alloy (TC4) to stainless steel (1Cr18Ni9Ti) using an AgCuTi filler metal at 920 degrees C and 980 degrees C have been investigated. The results show that the main interfacial microstructure of the sample brazed at 920 degrees C was 1Cr18Ni9Ti/CuTi/Ag-rich+Cu(4)Ti/Cu(4)Ti/beta-Ti/TC4. Shear tests on brazed specimens show that the fractures occurred in the Ag-rich phase, indicating a ductile fracture type. The recorded room temperature shear strength value of the joint was up to 188 MPa. When the brazing temperature was increased to 980 degrees C, the interfacial microstructure of the joint became 1Cr18Ni9Ti/Ag-rich/CuTi(2)/Ti-Cu-rich/beta-Ti/TC4. Due to the imposed temperature increment, a large amount of Ag-rich phase was depleted from the joint while CuTi(2) and dendritic Ti-Cu-rich phases occupied the brazed joint zone. The fractures after shear testing occurred in the CuTi2 as well as in the Ti-Cu-rich phases. The room temperature shear strength after the 980 degrees C braze decreased to 123 MPa. (C) 2008 Elsevier Inc. All rights reserved.
引用
收藏
页码：1721 / 1727
页数：7
相关论文
共 15 条
[1]   Wetting and reaction between β′-sialon, stainless steel and Cu-Ag brazing alloys containing Ti [J].
Abed, A ;
Jalham, IS ;
Hendry, A .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2001, 21 (03) :283-290
[2]   The microstructural observation of brazing Ti-6Al-4V and TZM using the BAg-8 braze alloy [J].
Chan, HY ;
Liaw, DW ;
Shiue, RK .
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2004, 22 (01) :27-33
[3]   Microstructural evolution of brazing Ti-6Al-4V and TZM using silver-based braze alloy [J].
Chan, HY ;
Liaw, DW ;
Shiue, RK .
MATERIALS LETTERS, 2004, 58 (7-8) :1141-1146
[4]   Microstructural evolution of infrared brazed Ti-15-3 alloy using Ti-15Cu-15Ni and Ti-15Cu-25Ni fillers [J].
Chang, CT ;
Shiue, RK ;
Chang, CS .
SCRIPTA MATERIALIA, 2006, 54 (05) :853-858
[5]   The effect of intermetallics on the strength properties of diffusion bonds formed between Ti-5.5Al-2.4V and 304 stainless steel [J].
Ghosh, M ;
Chatterjee, S ;
Mishra, B .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 363 (1-2) :268-274
[6]   Diffusion bonding of titanium to 304 stainless steel [J].
Ghosh, M ;
Bhanumurthy, K ;
Kale, GB ;
Krishnan, J ;
Chatterjee, S .
JOURNAL OF NUCLEAR MATERIALS, 2003, 322 (2-3) :235-241
[7]   Diffusion bonded transition joints of titanium to stainless steel with improved properties [J].
Ghosh, M ;
Chatterjee, S .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 358 (1-2) :152-158
[8]   Characterization of transition joints of commercially pure titanium to 304 stainless steel [J].
Ghosh, M ;
Chatterjee, S .
MATERIALS CHARACTERIZATION, 2002, 48 (05) :393-399
[9]   Hot pressing diffusion bonding of a titanium alloy to a stainless steel with an aluminum alloy interlayer [J].
He, P. ;
Yue, X. ;
Zhang, J. H. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 486 (1-2) :171-176
[10]   Diffusion bonding technology of a titanium alloy to a stainless steel web with an Ni interlayer [J].
He, P ;
Zhang, JH ;
Zhou, RL ;
Li, XQ .
MATERIALS CHARACTERIZATION, 1999, 43 (05) :287-292
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