Martensitic Transformation and Crystalline Structure of Ni50Mn50-xSnx Melt-Spun Heusler Alloys

被引：2

作者：

Ameur, Rim ^{[1
,2
]}

Chemingui, Mahmoud ^{[1
]}

Bachaga, Tarek ^{[1
,2
]}

Escoda, Lluisa ^{[2
]}

Khitouni, Mohamed ^{[1
]}

Sunol, Joan-Josep ^{[2
]}

机构：

[1] Univ Sfax, UR 11ES73, Lab Inorgan Chem, Soukra Rd Km 3,5,BP 1171, Safx 3018, Tunisia

[2] Univ Girona, Dept Phys, Campus Montilivi S-N, Girona 17003, Spain

来源：

CRYSTALS | 2020年 / 10卷 / 10期

关键词：

Heusler alloys; martensitic transformation; DSC; XRD; rapid solidification; PHASE; GA;

D O I：

10.3390/cryst10100853

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The structure and thermal behavior are key factors that influence the functional response of Ni-Mn-Sn alloys. The present study reports the production as well as the structure and thermal analysis of melt-spun (solidification rate: 40 ms(-1)) Ni-50 Mn50-xSnx (x = 10, 11, 12 and 13 at.%) alloys. X-ray diffraction measurements were performed at room temperature. The austenite state has an L2(1) structure, whereas the structure of the martensite is 7M or 10M (depending on the Sn/Mn percentage). Furthermore, the structural martensitic transformation was detected by differential scanning calorimetry (DSC). As expected, upon increasing the Sn content, the characteristic temperatures also increase. The same tendency is detected in the thermodynamic parameters (entropy and enthalpy). The e/a control allows the development production of alloys with a transformation close to room temperature.

引用

页码：1 / 11

页数：11

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