Irradiation-induced changes of martensitic transformation temperatures in a TiNiNb shape memory alloy

被引：7
|
作者：
Mo, HQ
Zu, XT [1 ]
Huo, Y
机构：
[1] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China
[2] Sichuan Univ, Dept Mat Forming & Controlling Engn, Chengdu 610065, Peoples R China
[3] Fudan Univ, Dept Mech, Shanghai 200433, Peoples R China
来源：
THERMOCHIMICA ACTA | 2005年 / 428卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
TiNiNb shape memory alloys; electron irradiation effects; transmission electron microscopy; differential scanning calorimeter; martensitic transformation;
D O I：
10.1016/j.tca.2004.09.022
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Effects of electron irradiations on the transition behavior of 1123 K annealed Ti44Ni47Nb9 shape memory alloy specimens were studied. The transformation temperatures and the latent heat of phase transformation were measured by differential scanning calorimeter (DSC). The microstructure changes were determined by XRD and TEM. The 1.7 MeV electron irradiation increases the martensitic transformation start temperature, finish temperature, austenite transformation start, finish temperature by similar to 20 K. The XRD and TEM observation showed that the volume fraction of beta-Nb precipitate increased after electron irradiation, which contributed to the observed changes of the transformation temperatures. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：41 / 45
页数：5
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