Substructure and boundary structure of deformed 18R martensite in a Cu-Zn-Al alloy

IMR OpenIR

	Substructure and boundary structure of deformed 18R martensite in a Cu-Zn-Al alloy; Substructure and boundary structure of deformed 18R martensite in a Cu-Zn-Al alloy
	J. X. Zhang; Y. F. Zheng; Y. C. Luo; L. C. Zhao
	1999 ; 1999
发表期刊	Acta Materialia ; Acta Materialia
ISSN	1359-6454 ; 1359-6454
卷号	47 期号:12 页码:3497-3506
摘要	The substructure of martensite and the intervariant boundary structure in the deformed 18R martensite in a Cu-Zn-Al shape memory alloy have been investigated in detail by a high resolution electron microscope (HREM). It is found that the deformation-produced dislocations, which mainly appear in the (0018) plane, extend into partial dislocations with a spacing of between five and eight atomic layers. In addition to (0018)[010] slipping, dislocations in the ((1) over bar 28) plane are also found. To accommodate strain, lattice rotation takes place near the boundary plane to bring close packed planes of the related variants into parallelism, reducing the resistance for the boundary to move. The intervariant boundaries in the same plate group or between different groups develop into stepped boundary structure due to deformation. These steps correspond to twinning dislocations whose movement results in the migration of the boundary perpendicular to itself. (C) 1999 Acta Metallurgica Inc. Published by Elsevier Science Ltd. All rights reserved.; The substructure of martensite and the intervariant boundary structure in the deformed 18R martensite in a Cu-Zn-Al shape memory alloy have been investigated in detail by a high resolution electron microscope (HREM). It is found that the deformation-produced dislocations, which mainly appear in the (0018) plane, extend into partial dislocations with a spacing of between five and eight atomic layers. In addition to (0018)[010] slipping, dislocations in the ((1) over bar 28) plane are also found. To accommodate strain, lattice rotation takes place near the boundary plane to bring close packed planes of the related variants into parallelism, reducing the resistance for the boundary to move. The intervariant boundaries in the same plate group or between different groups develop into stepped boundary structure due to deformation. These steps correspond to twinning dislocations whose movement results in the migration of the boundary perpendicular to itself. (C) 1999 Acta Metallurgica Inc. Published by Elsevier Science Ltd. All rights reserved.
部门归属	chinese acad sci, inst met res, atom imaging solids lab, shenyang 110015, peoples r china. harbin inst technol, sch mat sci & engn, harbin 150001, peoples r china.;zhang, jx (reprint author), chinese acad sci, inst met res, atom imaging solids lab, shenyang 110015, peoples r china ; chinese acad sci, inst met res, atom imaging solids lab, shenyang 110015, peoples r china. harbin inst technol, sch mat sci & engn, harbin 150001, peoples r china.;zhang, jx (reprint author), chinese acad sci, inst met res, atom imaging solids lab, shenyang 110015, peoples r china
关键词	Transmission Electron Microscopy (Tem) Transmission Electron Microscopy (Tem) Copper Alloy Copper Alloy Phase Phase Transformations Transformations Shape Memory Shape Memory Dislocations Dislocations Interface Interface Shape-memory Alloys Shape-memory Alloys Transformation Transformation Deformation Deformation Variants Variants
URL	查看原文 ; 查看原文
WOS记录号	WOS:000083088100018 ; WOS:000083088100018
引用统计	被引频次：18[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/321006/37574
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. X. Zhang,Y. F. Zheng,Y. C. Luo,et al. Substructure and boundary structure of deformed 18R martensite in a Cu-Zn-Al alloy, Substructure and boundary structure of deformed 18R martensite in a Cu-Zn-Al alloy[J]. Acta Materialia, Acta Materialia,1999, 1999,47, 47(12):3497-3506, 3497-3506.
APA	J. X. Zhang,Y. F. Zheng,Y. C. Luo,&L. C. Zhao.(1999).Substructure and boundary structure of deformed 18R martensite in a Cu-Zn-Al alloy.Acta Materialia,47(12),3497-3506.
MLA	J. X. Zhang,et al."Substructure and boundary structure of deformed 18R martensite in a Cu-Zn-Al alloy".Acta Materialia 47.12(1999):3497-3506.