Role of interstitial atoms in the microstructure and non-linear elastic deformation behavior of Ti-Nb alloy

被引：27

作者：

Tahara, Masaki ^{[1
,2
]}

Kim, Hee Young ^{[1
]}

Inamura, Tomonari ^{[2
]}

Hosoda, Hideki ^{[2
]}

Miyazaki, Shuichi ^{[1
,3
,4
,5
]}

机构：

[1] Univ Tsukuba, Div Mat Sci, Tsukuba, Ibaraki 3058573, Japan

[2] Tokyo Inst Technol, Precis & Intelligence Lab, Yokohama, Kanagawa 2268503, Japan

[3] King Abdulaziz Univ, Ctr Excellence Adv Mat Res, Jeddah 21589, Saudi Arabia

[4] Gyeongsang Natl Univ, Sch Mat Sci & Engn, Jinju 660701, Gyeongnam, South Korea

[5] Gyeongsang Natl Univ, ERI, Jinju 660701, Gyeongnam, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 577卷

关键词：

Domain structure; Shape memory; Transmission electron microscopy; SHAPE-MEMORY; LATTICE MODULATION; SUPERELASTICITY; TRANSFORMATION; MECHANISM; OXYGEN;

D O I：

10.1016/j.jallcom.2011.12.113

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In order to clarify the effect of interstitial atoms on the non-linear elastic deformation behavior of the Ti-Nb alloy, the microstructure of (Ti-26Nb)-1.0O alloy was closely investigated by transmission electron microscope (TEM) and in situ X-ray diffraction (XRD) measurements. The < 1 1 0 >(beta)* rel rods and {111}(beta)* rel planes were observed in a reciprocal space for the (Ti-26Nb)-1.0O alloy. Their origin was {1 1 0}(beta)< 1 (1) over bar 0 >(beta) transverse type lattice modulation generated by oxygen atoms. Nanosized modulated domain structure (nanodomain) distributed homogeneously and randomly in the beta phase and acted as obstacles for the long-ranged martensitic transformation in the (Ti-26Nb)-1.0O alloy. The non-linear elastic strain of the (Ti-26Nb)-1.0O alloy was generated by the continuous increase in lattice distortion strain of the favorable nanodomain variant during tensile deformation. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：S404 / S407

页数：4

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