Direct observation of a-b twin laminate in monoclinic five-layered martensite of Ni-Mn-Ga magnetic shape memory single crystal. (1st April 2017)

• Record Type: Journal Article
• Authors: Heczko, Oleg; Klimša, Ladislav; Kopeček, Jaromír
• Is Part Of: Scripta materialia. Number 131(2017)
• Page Start: 76
• Page End: 79
• Publication Date: 2017-04-01
• Subjects: Magnetic shape memory alloys -- Martensitic transformation -- Twinning -- a-b twin laminate; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.01.010
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Full hierarchy of twinning including a-b twin laminate was directly observed by optical and scanning electron microscopy (SEM) in the vicinity of macroscopic, mobile a-c twin boundary in five-layered monoclinic (10M) martensite of Ni50 Mn28 Ga22 single crystals exhibiting magnetically induced reorientation (MIR). The submicron a-b twin laminate was identified by backscattered electrons in SEM. The a-b laminate terminated straight on Type I and by laminate branching on Type II twin boundary in agreement with the model. Graphical abstract: