Microstructure and martensitic transformation of an ultrafine-grained   TiNiNb shape memory alloy processed by equal channel angular pressing

doi:10.1016/j.intermet.2014.01.019

CORC > 北京大学 > 工学院

	Microstructure and martensitic transformation of an ultrafine-grained TiNiNb shape memory alloy processed by equal channel angular pressing
	Tong, Y. X. ; Jiang, P. C. ; Chen, F. ; Tian, B. ; Li, L. ; Zheng, Y. F. ; Gunderov, Dmitry V. ; Valiev, Ruslan Z.
刊名	intermetallics
	2014
关键词	Intermetallics, miscellaneous Martensitic transformations Microstructure Microscopy SEVERE PLASTIC-DEFORMATION NI-TI-NB PHASE-TRANSFORMATIONS CYCLIC REVERSIBILITY BEHAVIOR TEMPERATURE HYSTERESIS REFINEMENT EXTRUSION
DOI	10.1016/j.intermet.2014.01.019
英文摘要	Microstructure, martensitic transformation and mechanical properties of an ultrafine-grained Ti44Ni47Nb9 shape memory alloy processed by equal channel angular pressing were investigated. The as-ECAP processed sample is characterized by an inhomogeneous and refined microstructure. In beta-Nb phase-rich region, the grains of matrix are elongated with high density dislocations. In beta-Nb phase-free region, the microstructure is partial recovery and characterized by near-equiaxed grains. The heterogeneous microstructure is attributed to presence of beta-Nb phase. Martensitic transformation behavior of the as-ECAP processed sample is characterized by a single-stage transformation. The thermal cycling stability of transformation and the mechanical properties are considerably improved due to a strengthening effect resulting from refined grain size and high dislocation density. (C) 2014 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000334085800013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; SCI(E); EI; 16; ARTICLE; tongyx@hrbeu.edu.cn; 81-86; 49
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/213937]
专题	工学院
推荐引用方式 GB/T 7714	Tong, Y. X.,Jiang, P. C.,Chen, F.,et al. Microstructure and martensitic transformation of an ultrafine-grained TiNiNb shape memory alloy processed by equal channel angular pressing[J]. intermetallics,2014.
APA	Tong, Y. X..,Jiang, P. C..,Chen, F..,Tian, B..,Li, L..,...&Valiev, Ruslan Z..(2014).Microstructure and martensitic transformation of an ultrafine-grained TiNiNb shape memory alloy processed by equal channel angular pressing.intermetallics.
MLA	Tong, Y. X.,et al."Microstructure and martensitic transformation of an ultrafine-grained TiNiNb shape memory alloy processed by equal channel angular pressing".intermetallics (2014).