Orientation Dependence of Shape Memory Effect and Superelasticity in (TiZrHf)50Ni25Co10Cu15 High-Entropy Alloy Single Crystals

被引：8
作者：
Chumlyakov, Y., I [1 ]
Kireeva, I., V [1 ]
Pobedennaya, Z., V [1 ]
Yakovleva, L. P. [1 ]
Vyrodova, A. V. [1 ]
Kuksgauzen, I., V [1 ]
机构：
[1] Natl Res Tomsk State Univ, Tomsk 634050, Russia
来源：
SHAPE MEMORY AND SUPERELASTICITY | 2023年 / 9卷 / 02期
基金：
俄罗斯科学基金会;
关键词：
(TiZrHf)(50)Ni25Co10Cu15 high-entropy alloy; Single crystals; High-temperature superelasticity; High-temperature shape memory effect; Compression; THERMOELASTIC MARTENSITIC TRANSFORMATIONS; FREE-ENERGY CONTRIBUTIONS; MECHANICAL-BEHAVIOR; STRESS DEPENDENCE; STRENGTH;
D O I：
10.1007/s40830-022-00411-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Shape memory effect (SME) and superelasticity (SE) were studied on the (TiZrHf)(50)Ni25Co10Cu15 high entropy alloy single crystals under compression along three different crystallographic orientations in B2-phase ([001](B2) , [011](B2 )and [111] (B2)) in order to reveal orientation dependence of temperature range of SE and maximum values of SME and SE. It was found that in the [001]B2 orientation, the SME and SE are 3.0 and 3.8%, respectively. In [011](B2)-oriented crystals, the SME is 4.7% and the SE is 4.4%, while in [111] B2-oriented crystals, the SME and SE are 1.7-1.8% and 3.5% respectively. In all studied orientations, SE is observed in a wide temperature range of M-s = 404 to 530 K. The studied single crystals are high-strength crystals with high-temperature SME and SE. The data obtained on the (TiZrHf)(50)Ni(25)Co(10)Cu(15)high entropy alloy single crystals are compared with the results obtained earlier on single crystals of NiTi, TiNiHf and (TiZrHf)(50)Ni(25)Co(10)Cu(15)polycrystals.
引用
收藏
页码：300 / 312
页数：13
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