Diffusion Bonding of Dissimilar Intermetallic Alloys Based on Ti(2)AlNb and TiAl

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	Diffusion Bonding of Dissimilar Intermetallic Alloys Based on Ti(2)AlNb and TiAl
	J. Y. Zou; Y. Y. Cui; R. Yang
	2009
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	25 期号:6 页码:819-824
摘要	Direct diffusion bonding of an orthorhombic Ti(2)AlNb base alloy to a TiAl base alloy, Ti-22Al-23Nb-2Ta and Ti-46.2Al-2Cr-2Nb-0.15B (at. pct), was carried out and the interface microstructure, formation of new phase at the interface and joint strength were characterized. At low temperature, a new phase with AlNb(2)-structure, Al(Nb, Ti)(2), was formed in the interface region adjacent to the 0 base alloy. The alpha(2) was found to be the major reaction product and developed in the interface region adjacent to the TiAl alloy as well as in the region adjacent to the O base alloy accompanying the formation of Al(Nb, Ti)(2). The occurrence of Al(Nb, Ti)(2) has been attributed to the different diffusivity of Nb and Al, leading to a eutectoid-like reaction. At relatively high temperature, Al(Nb, Ti)(2) did not form due to enhanced diffusion of Nb but a B2-enriched zone formed on the O alloy side instead after long holding time. Only when an appropriate interface microstructure was achieved by optimizing the bonding parameters, could the shear strength of the joint reach 80% of that of the TiAl base alloy.
部门归属	[zou, jianying] china univ petr, dongying 257061, peoples r china. [cui, yuyou; yang, rui] chinese acad sci, inst met res, shenyang 110016, peoples r china.;zou, jy (reprint author), china univ petr, dongying 257061, peoples r china;zjyimr@163.com
关键词	Diffusion Bonding Interface Shear Strength Tial Orthorhombic Alloy Phase-equilibria Microstructure Steel System Strength Joints Creep
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32645
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Y. Zou,Y. Y. Cui,R. Yang. Diffusion Bonding of Dissimilar Intermetallic Alloys Based on Ti(2)AlNb and TiAl[J]. Journal of Materials Science & Technology,2009,25(6):819-824.
APA	J. Y. Zou,Y. Y. Cui,&R. Yang.(2009).Diffusion Bonding of Dissimilar Intermetallic Alloys Based on Ti(2)AlNb and TiAl.Journal of Materials Science & Technology,25(6),819-824.
MLA	J. Y. Zou,et al."Diffusion Bonding of Dissimilar Intermetallic Alloys Based on Ti(2)AlNb and TiAl".Journal of Materials Science & Technology 25.6(2009):819-824.