Correlation of microsegregation and variant distribution in directionally solidified Ni-Mn-Ga alloys - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Scripta Materialia Année : 2018

Correlation of microsegregation and variant distribution in directionally solidified Ni-Mn-Ga alloys

Résumé

In this work, the microsegregation and variant distribution in directionally solidified Ni-Mn-Ga alloys have been investigated. The results show that the martensitic variant distribution changed dramatically, as well as a decrease in microsegregation between dendrite core and interdendritic regions, after the directionally solidified samples underwent a high-temperature heat treatment. Further theoretical calculations reveal that the preferential martensitic configuration is accommodated with martensitic-transformation-induced stress in the Ni-Mn-Ga alloys with pronounced microsegregation. This finding is of significance as it highlights the role of microsegregation in variant distribution and provides a possible way to obtain martensite with a controllable variant distribution.

Domaines

Matériaux
Fichier non déposé

Dates et versions

hal-01900865 , version 1 (22-10-2018)

Identifiants

Citer

Long Hou, Yanchao Dai, Yves Fautrelle, Zongbin Li, Zhongming Ren, et al.. Correlation of microsegregation and variant distribution in directionally solidified Ni-Mn-Ga alloys. Scripta Materialia, 2018, 156, pp.95-100. ⟨10.1016/j.scriptamat.2018.07.019⟩. ⟨hal-01900865⟩
26 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More