Time-temperature-transformation diagram for the martensitic transformation in a titanium-nickel shape memory alloy

被引：10

作者：

Fukuda, Takashi ^{[1
]}

Kawamura, Takashi ^{[1
]}

Kakeshita, Tomoyuki ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Dept Mat Sci & Engn, Suita, Osaka 565, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 683卷

基金：

日本学术振兴会;

关键词：

Titanium-nickel alloy; Shape memory alloy; Specific heat; Free energy; KINETICS;

D O I：

10.1016/j.jallcom.2016.05.120

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：

We have constructed a time-temperature-transformation (TTT) diagram for the martensitic transformation in a Ti-51.3Ni (at%) alloy. The transformation proceeds when the specimen is held at fixed temperatures between 110 K and 140 K, but not at other temperatures. The time required for the formation of 0.1% of the martensite phase is plotted as a TTT diagram. It exhibits a C-curve with a nose temperature near 130 K. Application of a thermal activation model to the TTT diagram suggests that the size of a nucleus of the martensite phase is about (2.2 nm)(3). (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：481 / 484

页数：4

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