Characterisation of diffusion bonds formed between Ti-6Al-4V and titanium aluminide super alpha-2

被引：0
|
作者：
Islam, MF [1 ]
Ridley, N [1 ]
机构：
[1] UNIV MANCHESTER,INST SCI & TECHNOL,MANCHESTER M60 1QD,LANCS,ENGLAND
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 1996年 / 12卷 / 08期
关键词：
D O I：
10.1179/mst.1996.12.8.623
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Isostatic diffusion bonds were produced between Ti-6Al-4V and Super Alpha-2 sheet materials at temperatures of 920-940 degrees C and pressures of 6-10 MPa. The diffusion bonds were evaluated using optical microscopy, lap shear testing and scanning electron microscopy of the lap shear fracture faces. The results of X-ray microanalysis carried out on the bond interface region showed that substantial diffusion of niobium and molybdenum had occurred from the Super Alpha-2 to the Ti-6Al-4V. This caused a local suppression of the beta transus in the Ti-4Al-4V alloy and on subsequent cooling the beta phase decomposed to give a microstructure of fine acicular alpha phase and retained beta phase in the bond region. (C) 1996 The Institute of Materials.
引用
收藏
页码：623 / 627
页数：5
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