Coexistence of five domains at single propagating interface in single-crystal Ni-Mn-Ga shape memory alloy - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of the Mechanics and Physics of Solids Année : 2024

Coexistence of five domains at single propagating interface in single-crystal Ni-Mn-Ga shape memory alloy

Résumé

Coexistence of both austenite and martensite during phase transformation is a common feature of all Shape Memory Alloys (SMAs). The martensite has different variants featuring characteristic deformations rotationally linked to each other due to the symmetries of the austenite parent phase, and can form twins by mixing pair of variants which lead to different mean characteristic deformations. Multiple-domain microstructures (consisting of austenite, martensite domain interface is not a perfectly compatible pattern like the basic habit plane (consisting of only one twin compatible with austenite). However, its level of non-compatibility is similar to that of the quite common X-interface (four-domain coexistence) which is observed in many SMAs. Further, the significant effects of the thermal loading path and the material initial state (the initial martensite variant) on the domain pattern formation are demonstrated and analyzed. The experimental observation and the theoretical analysis of the domain patterns can provide hints to better understand diffuse interface kinetics and phase transformation hysteresis.
Fichier principal
Vignette du fichier
Manuscript_JMPS_2024.pdf (4.02 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04460008 , version 1 (15-02-2024)

Identifiants

Citer

Chengguan Zhang, Xavier Balandraud, Yongjun He. Coexistence of five domains at single propagating interface in single-crystal Ni-Mn-Ga shape memory alloy. Journal of the Mechanics and Physics of Solids, 2024, 183, pp.105481. ⟨10.1016/j.jmps.2023.105481⟩. ⟨hal-04460008⟩
14 Consultations
1 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More