Orientation dependent stress-induced intermartensitic transformations in Ni50.3Mn28.7Ga21.0 single crystal

被引：1
作者：
Czaja, P. [1 ]
Szczerba, M. J. [1 ]
Villa, E. [2 ]
Villa, F. [2 ]
Chernenko, V [3 ,4 ,5 ]
机构：
[1] Polish Acad Sci, Aleksander Krupkowski Inst Met & Mat Sci, 25 Reymonta St, PL-30059 Krakow, Poland
[2] CNR ICMATE, Unit Lecco, Via G Previati 1-E, I-23900 Lecce, Italy
[3] BCMaterials, Sci Pk, Leioa 48940, Spain
[4] Univ Basque Country, UPV EHU, Sci Pk, Leioa 48940, Spain
[5] Basque Fdn Sci, Ikerbasque, Bilbao 48009, Spain
来源：
JOURNAL OF APPLIED PHYSICS | 2021年 / 130卷 / 20期
关键词：
PHASE-TRANSFORMATIONS; MARTENSITE; MICROSTRUCTURE; ALLOYS;
D O I：
10.1063/5.0069324
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Intermartensitic transformations (IMTs) between 10, 14, and 2M martensitic phases induced by the uniaxial compression and tension have been investigated using the same Ni50.3Mn28.7Ga21.0 single crystal. One series of thermomechanical measurements was carried out in a tensile configuration along the [001](c) direction and another one under a compression load along the [110](c) direction of the samples cut from the same single crystal. The obtained slopes of the "stress-temperature " phase diagrams of 10M & RARR; 14M and 14M & RARR; 2M IMTs are in satisfactory agreement with the Clausius-Clapeyron relationship applied for each IMT induced under compression and tension loadings. The results are important for the development of the theory of IMTs in magnetic shape memory alloys as well as for their practical applications given large superelastic strains summed over a sequence of martensite structures and a low twining stress noted uniquely for modulated martensites.
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页数：5
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