Diffusion Bonding of Dissimilar Intermetallic Alloys Based on Ti2AlNb and TiAl

IMR OpenIR

	Diffusion Bonding of Dissimilar Intermetallic Alloys Based on Ti2AlNb and TiAl
	Zou, Jianying 1; Cui, Yuyou 2; Yang, Rui 2
通讯作者	Zou, Jianying(zjyimr@163.com)
	2009-11-01
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 Ti2AlNb 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 AlNb2-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.
关键词	Diffusion bonding Interface Shear strength TiAl Orthorhombic alloy
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000272784100021
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/97466
专题	中国科学院金属研究所
通讯作者	Zou, Jianying
作者单位	1.China Univ Petr, Dongying 257061, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zou, Jianying,Cui, Yuyou,Yang, Rui. Diffusion Bonding of Dissimilar Intermetallic Alloys Based on Ti2AlNb and TiAl[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2009,25(6):819-824.
APA	Zou, Jianying,Cui, Yuyou,&Yang, Rui.(2009).Diffusion Bonding of Dissimilar Intermetallic Alloys Based on Ti2AlNb and TiAl.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,25(6),819-824.
MLA	Zou, Jianying,et al."Diffusion Bonding of Dissimilar Intermetallic Alloys Based on Ti2AlNb and TiAl".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 25.6(2009):819-824.