Structural change of deformation twin boundaries in a heavily deformed gamma-TiAl-based alloy

IMR OpenIR

	Structural change of deformation twin boundaries in a heavily deformed gamma-TiAl-based alloy
	L. C. Zhang; J. G. Wang; G. L. Chen; G. Sauthoff
	2000
发表期刊	Materials Letters
ISSN	0167-577X
卷号	45 期号:6 页码:320-325
摘要	Structural change of deformation twin boundaries in gamma phase of a Ti-45Al-10Nb-2.5Mn alloy with similar to 29% deformation strain has been investigated by TEM. We found numerous bent twins propagating in the gamma matrix, which were inclined at angles of a few degrees to the (111)(M) plane in the gamma matrix. HREM observations showed that (111)(DT) plane in the twins exhibited a large misorientation angle with the (111)(M) plane, and many 1/3[111] Frank partial dislocations were observed in the incoherent twin boundaries. These 1/3[111] Frank partials, which were possible to form through dissociations of matrix dislocations at the twin boundaries, can accommodate the bending of the twins and the misorientation from the true-twin orientation relationship. (C) 2000 Elsevier Science B.V. All rights reserved.
部门归属	max planck inst eisenforsch gmbh, d-40074 dusseldorf, germany. 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), max planck inst eisenforsch gmbh, max planck str 1,postfach 140444, d-40074 dusseldorf, germany
关键词	Gamma-tial Alloy Heavy Deformation Deformation Twin Atomic Plane 1/3[111] Frank Partials Hrem Room-temperature Intersections Interfaces
URL	查看原文
WOS记录号	WOS:000089692200007
引用统计	被引频次：7[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/321006/37248
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. C. Zhang,J. G. Wang,G. L. Chen,et al. Structural change of deformation twin boundaries in a heavily deformed gamma-TiAl-based alloy[J]. Materials Letters,2000,45(6):320-325.
APA	L. C. Zhang,J. G. Wang,G. L. Chen,&G. Sauthoff.(2000).Structural change of deformation twin boundaries in a heavily deformed gamma-TiAl-based alloy.Materials Letters,45(6),320-325.
MLA	L. C. Zhang,et al."Structural change of deformation twin boundaries in a heavily deformed gamma-TiAl-based alloy".Materials Letters 45.6(2000):320-325.