Ultra-high temperature shape memory in high-Hf content NiTiHf alloys

被引：7
作者：
Shuitcev, A. V. [1 ]
Li, Q. Z. [1 ]
Khomutov, M. G. [2 ]
Li, L. [1 ]
Tong, Y. X. [1 ]
机构：
[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Int Joint Lab Adv Nanomat Heilongjiang Prov, Harbin 150001, Peoples R China
[2] Natl Univ Sci & Technol MISIS, Moscow 119049, Russia
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2025年 / 209卷
基金：
中国国家自然科学基金;
关键词：
MARTENSITIC-TRANSFORMATION; BEHAVIOR; HYSTERESIS;
D O I：
10.1016/j.jmst.2024.05.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Microstructure and shape memory behavior of Ni50Ti25Hf25, Ni50Ti20Hf30, and Ni50Ti15Hf35 (at.%) were investigated. The self-accommodated monoclinic B19′ martensite was found in all studied alloys at room temperature. Transformation temperatures increase with increasing Hf content. Uniaxial constant-force thermal cycling test reveals that NiTiHf alloys can exhibit reversible shape memory behavior up to ∼800 °C. The work output decreases with increasing operating temperatures due to the dominance of creep mechanisms. © 2024
引用
收藏
页码：124 / 127
页数：4
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