High-temperature dependence of yield strength and microstructure in Ni54Fe19Ga27 54 Fe 19 Ga 27 and (Ni 54 Fe 19 Ga 27 ) 99.7 B 0.3 alloys

被引：1

作者：

Timofeeva, E. E. ^{[1
]}

Panchenko, E. Yu. ^{[1
]}

Eftifeeva, A. S. ^{[1
]}

Surikov, N. Yu. ^{[1
]}

Tagiltsev, A. I. ^{[1
]}

Kurlevskaya, I. ^{[1
]}

机构：

[1] Tomsk State Univ, Novosobornaya Sq 1, Tomsk 634050, Russia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2024年 / 1005卷

基金：

俄罗斯科学基金会;

关键词：

Shape memory alloys; Yield strength; gamma-phase; Plastic flow; Martensitic transformations; Boron microalloying; SHAPE-MEMORY ALLOY; SINGLE-CRYSTALS; DEFORMATION;

D O I：

10.1016/j.jallcom.2024.176076

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：

The deformation behavior, yield strength temperature dependence, and plasticity of the high-temperature L21(B2)-phase 1 (B2)-phase during compression in the temperature range 773-1173 K for Ni54Fe19Ga27 54 Fe 19 Ga 27 and (Ni54Fe19- 54 Fe 19- Ga 27 ) 99.7 B 0.3 shape memory alloys was determined for the first time. The studied alloys were characterized by high plasticity (over 70 %) and minimum yield strength level (13-65 MPa) at temperatures from 973 to 1173 K. Possible mechanisms of yield strength decrease, plasticity increase, and microstructure formation during the deformation process depending on test temperature and chemical composition are discussed. The possibility of hot rolling of Ni54Fe19Ga27 54 Fe 19 Ga 27 alloys at elevated temperatures was demonstrated.

引用

页数：10

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