Thermal- and stress-induced martensitic transformations in [001]-oriented Ni44Fe19Ga27Co10 single crystals

被引:4
作者
Timofeeva, E. E. [1 ]
Panchenko, E. Yu [1 ]
Zherdeva, M., V [1 ]
Chumlyakov, Yu, I [1 ]
Karaman, I [2 ]
机构
[1] Tomsk State Univ, Novosobornaya Sq 1, Tomsk 634050, Russia
[2] Texas A&M Univ, College Stn, TX 77843 USA
基金
俄罗斯科学基金会;
关键词
Martensitic transformations; Superelasticity; Single crystals; Microstructure; STRAIN-GLASS; ATOMIC ORDER; TRANSITION; ALLOYS;
D O I
10.1016/j.matlet.2021.131477
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The microstructures and martensitic transformations upon cooling/heating, and under a compressive load have been studied for [001]-oriented Ni44Fe19Ga27Co10 (at.%) single crystals after growth and following annealing at 1448 K for 1 h, followed by quenching. Heat treatment determined the microstructure of the high-temperature phase (crystal lattice, the presence of gamma-phase particles, and the formation of B2-phase nanodomains). A wide superelasticity temperature range of 277 K was found. Annealing led to an 80 K increase in the martensitic transformations temperatures, widening of transformations intervals, and an increase in the strength properties of the high-temperature phase by 100 MPa, which led to a shift of the superelasticity range towards high temperature.
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页数:4
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