Diffusion Bonding of TiAl to Ti6Al4V Using Nanolayers

被引：0
作者：
Sónia Simões
Filomena Viana
A. Sofia Ramos
M. Teresa Vieira
Manuel F. Vieira
机构：
[1] University of Porto,CEMMPRE, Department of Metallurgical and Materials Engineering
[2] INEGI - Institute of Science and Innovation in Mechanical and Industrial Engineering,CEMMPRE, Department of Mechanical Engineering
[3] University of Coimbra,undefined
来源：
Journal of Materials Engineering and Performance | 2018年 / 27卷
关键词：
electron microscopy; intermetallic; joining; nanomaterials; titanium;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Microstructural characterization of TiAl to Ti6Al4V dissimilar diffusion bonds assisted by reactive Ni/Al nanolayers was performed in this study. The nanolayers (alternated Al and Ni) were deposited onto the base material surfaces. Diffusion bonding was performed at 700 and 800 °C under pressures from 5 to 40 MPa and dwell times between 60 and 180 min. Microstructural characterization was performed using high-resolution transmission and scanning electron microscopies. The observations revealed that dissimilar TiAl to Ti6Al4V joints assisted by Ni/Al reactive nanolayers can be obtained successfully at 800 °C during 60 min using a pressure of 20 MPa. The bond interface is thin (less than 10 µm) and is mainly composed of NiAl grains. Thin layers of Al-Ni-Ti intermetallic compounds were formed adjacent to the base materials.
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页码：5064 / 5068
页数：4
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