Hot-deformation-induced alpha(2)/gamma interfacial structure in a two-phase gamma-TiAl-based alloy

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	Hot-deformation-induced alpha(2)/gamma interfacial structure in a two-phase gamma-TiAl-based alloy
	L. C. Zhang; G. L. Chen; J. G. Wang; H. Q. Ye
	1998
发表期刊	Materials Letters
ISSN	0167-577X
卷号	36 期号:1-4 页码:132-136
摘要	The occurrence of nonequilibrium semi-coherent alpha(2)/gamma interfaces is an important microstructural feature of hot-deformed Ti-45Al-10Nb-2.5Mn-0.05B alloys. The feature of the alpha(2)/gamma interfaces is the misorientation from the conventional orientation relationship{111}(gamma) {0001}(alpha 2), (1 (1) over bar 0)(gamma) (11 (2) over bar 0)(alpha 2), as well as the asymmetry in the sense of interfacial boundary planes deviating from the equilibrium atomic planes (111)(gamma) or (0001)(alpha 2). Numerous interfacial ledges containing 1/3[111] Frank partial dislocations exist in this nonequilibrium semi-coherent alpha(2)/gamma interface. The analysis points toward the formation of this type of nonequilibrium alpha(2)/gamma interface accommodating the relative rotation of alpha(2) and gamma plates in the hot-deformation-induced bent lamellar structure. In the sharply bent lamellae, there even occur largely misoriented non-coherent alpha(2)/gamma interfaces with the {111}gamma plane no longer being parallel to the {0001}(alpha 2) plane. These interfaces result from the lamellae bending/kinking during heavy deformation. (C) 1998 Elsevier Science B.V. All rights reserved.
部门归属	univ sci & technol beijing, state key lab adv met & mat, beijing 100083, peoples r china. acad sinica, inst met res, atom imaging solids lab, shenyang 110015, peoples r china.;zhang, lc (reprint author), univ sci & technol beijing, state key lab adv met & mat, beijing 100083, peoples r china
关键词	Tial Alloy Deformation Lamellae Bending/kinking Alpha(2)/gamma Interface Hrem Microstructure Transmission Electron-microscopy Titanium Aluminide Boundaries
URL	查看原文
WOS记录号	WOS:000074629000026
引用统计	被引频次：9[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/321006/37871
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. C. Zhang,G. L. Chen,J. G. Wang,et al. Hot-deformation-induced alpha(2)/gamma interfacial structure in a two-phase gamma-TiAl-based alloy[J]. Materials Letters,1998,36(1-4):132-136.
APA	L. C. Zhang,G. L. Chen,J. G. Wang,&H. Q. Ye.(1998).Hot-deformation-induced alpha(2)/gamma interfacial structure in a two-phase gamma-TiAl-based alloy.Materials Letters,36(1-4),132-136.
MLA	L. C. Zhang,et al."Hot-deformation-induced alpha(2)/gamma interfacial structure in a two-phase gamma-TiAl-based alloy".Materials Letters 36.1-4(1998):132-136.