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

页码：288 / 295

页数：8

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