Interfacial reactions and strength properties in dissimilar titanium alloy/Ni alloy/microduplex stainless steel diffusion bonded joints

被引：40
|
作者：
Kundu, S. [1 ]
Sam, S. [1 ]
Chatterjee, S. [1 ]
机构：
[1] Bengal Engn & Sci Univ, Dept Met & Mat Engn, Sibpur 711103, Howrah, India
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 560卷
关键词：
Intermetallics; Diffusion bonding; Microstructure; Scanning Electron Microscopy; Mechanical properties; PHASE-TRANSFORMATION; TI-6AL-4V ALLOY; INTERLAYER; MICROSTRUCTURE; 304-STAINLESS-STEEL;
D O I：
10.1016/j.msea.2012.09.069
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The interfacial reactions and strength properties of a titanium alloy/ microduplex stainless steel diffusion bonded joint using Ni alloy as an intermediate materials was investigated in the temperature range of 800 to 950 degrees C for 75 min and at 950 degrees C for 15-90 min in vacuum. The microstructure observations at the stainless steel/Ni alloy interface indicate the presence of gamma-Fe layer up to 900 degrees C for 75 min and at 950 degrees C up to 45 min. Ni3Ti, NiTi and NiTi2 intermetallic layers were observed at the Ni alloy/titanium alloy interface at the same processing parameters and irregular shaped particles were present within the TiNi3 intermetallic layer. Beyond these processing parameters, the layer wise Fe-Ti or Fe-Cr-Ti base intermetallic compounds were observed at the microduplex stainless steel/Ni alloy interface. Maximum tensile strength of similar to 639.9 MPa and shear strength of similar to 477.8 MPa along with similar to 9.3% ductility were obtained for the diffusion couple processed at 900 degrees C for 75 min. (C) 2012 Published by Elsevier B.V.
引用
收藏
页码：288 / 295
页数：8
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