Effect of deformation on the stability of stress-induced martensite in nanocrystalline NiTi shape memory alloy

被引：8

作者：

Shi, Xiaobin ^{[1
]}

Yu, Mengying ^{[1
]}

Guo, Fangmin ^{[1
]}

Liu, Zhenyang ^{[1
]}

Jiang, Daqiang ^{[1
]}

Han, Xiaodong ^{[2
]}

Cui, Lishan ^{[1
]}

机构：

[1] China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China

[2] Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China

来源：

MATERIALS LETTERS | 2014年 / 131卷

基金：

中国国家自然科学基金;

关键词：

Phase transformation; Phase stability; Nanocrystalline materials; Prestrain; MECHANICAL-BEHAVIOR; PHASE-TRANSFORMATIONS; METALS; SIZE;

D O I：

10.1016/j.matlet.2014.06.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A nanocrystalline Ni-49.8 at%Ti alloy with an average grain size of about 16 am was acquired by cold-drawing and low-temperature annealing. The stability of stress-induced martensite of the nanocrystalline NiTi alloy was investigated by a differential scanning calorimeter (DSC). The results show that stress-induced B19' martensite was preserved when the samples were subjected to 14% and 16% prestrain. The DSC measurements reveal that the prestrained samples experience two-stage B19' -> B2 transformation upon the first heating process and the transformation temperature increases with an increasing prestrain. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：233 / 235

页数：3

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