2026-04-17T17:17:23Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/185152024-06-18T11:50:53Zcom_2072_452955com_2072_2054col_2072_453063

Martensitic Transformation and Crystalline Structure of Ni50Mn50−xSnx Melt-Spun Heusler Alloys Ameur, Rim Chemingui, Mahmoud Bachagha, Tarek Escoda i Acero, Ma. Lluïsa Khitouni, Mohamed Suñol Martínez, Joan Josep Transformacions martensítiques Martensitic transformations Aliatges Alloys Aliatges amb memòria de forma Shape memory alloys Metalls -- Aliatges Metals -- Alloys 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) Ni50 Mn50−xSnx (x = 10, 11, 12 and 13 at.%) alloys. X-ray diffraction measurements were performed at room temperature. The austenite state has an L21 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 This study was supported by financial funds from the MAT2016-75967-P project (Spanish Mineco) 2024-06-18T11:50:53Z 2024-06-18T11:50:53Z 2024-06-18T11:50:53Z 2020-09-23 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion peer-reviewed http://hdl.handle.net/10256/18515 info:eu-repo/semantics/altIdentifier/doi/10.3390/cryst10100853 info:eu-repo/semantics/altIdentifier/issn/2073-4352 info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/MAT2016-75967-P/ES/ALEACIONES CON MEMORIA DE FORMA ACTIVADA POR CAMPO MAGNÉTICO EN MICROESCALA/ Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess MDPI (Multidisciplinary Digital Publishing Institute) Crystals, 2020, vol. 10, núm. 10, p. 853 Articles publicats (D-F)