Volume effect upon martensitic transformation in Ti29.7Ni50.3Hf20 high temperature shape memory alloy

被引：22

作者：

Shuitcev, A. ^{[1
]}

Vasin, R. N. ^{[2
]}

Fan, X. M. ^{[1
]}

Balagurov, A. M. ^{[2
,3
]}

Bobrikov, I. A. ^{[2
]}

Li, L. ^{[1
]}

Golovin, I. S. ^{[4
]}

Tong, Y. X. ^{[1
]}

机构：

[1] Harbin Engn Univ, Inst Mat Proc & Intelligent Mfg, Coll Mat Sci & Chem Engn, Harbin 150001, Peoples R China

[2] Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Russia

[3] Lomonosov Moscow State Univ, Moscow 119899, Russia

[4] Natl Univ Sci & Technol MISIS, Moscow 119049, Russia

来源：

SCRIPTA MATERIALIA | 2020年 / 178卷

基金：

中国国家自然科学基金; 国家重点研发计划; 俄罗斯基础研究基金会;

关键词：

Martensitic transformation; TiNiHF; Neutron diffraction; Thermal expansion; High temperature shape memory alloys; NI-RICH NITIHF; MICROSTRUCTURE; COMPATIBILITY; BEHAVIOR;

D O I：

10.1016/j.scriptamat.2019.11.004

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Thermoelastic martensitic transformation of Ti29.7Ni50.3Hf20 alloy was studied by high-resolution and in situ real-time neutron diffraction in the temperature range from 25 degrees C to 250 degrees C upon heating and cooling. It was shown that B19' martensite phase is characterized by strong anisotropy of thermal expansion, lattice parameters of a(B19') and b(B19') increase while C-B19' and beta angle decrease with increasing of temperature. Coefficients of thermal expansion for martensite and austenite were determined. The volume effect of transformation in Ti29.7Ni50.3Hf20 alloy is 0.75% which is six times larger than that of binary TiNi alloy. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：67 / 70

页数：4

共 20 条

[1] Neutron diffraction study of temperature-dependent elasticity of B19' NiTi-Elinvar effect and elastic softening [J].