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Characterization of the matrix-twin interface of a (1 0 -1 2) twin during growth
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SYSNO ASEP 0431981 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Characterization of the matrix-twin interface of a (1 0 -1 2) twin during growth Author(s) Ostapovets, Andriy (UFM-A) RID, ORCID
Serra, A. (ES)Number of authors 2 Source Title Philosophical Magazine. - : Taylor & Francis - ISSN 1478-6435
Roč. 94, č. 25 (2014), s. 2827-2839Number of pages 13 s. Language eng - English Country GB - United Kingdom Keywords twinning ; twin boundaries ; disconnections Subject RIV BM - Solid Matter Physics ; Magnetism Subject RIV - cooperation Institute of Physics - Solid Matter Physics ; Magnetism R&D Projects EE2.3.30.0063 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFM-A - RVO:68081723 UT WOS 000342137500001 DOI 10.1080/14786435.2014.933906 Annotation A model of twin growth in magnesium is presented together with the analysis of defects responsible for this growth. The twin interface is represented by {10-12} and basal-prismatic facets. Disclinations are situated in the facet junctions creating dipoles superimposed on basal-prismatic and conjugate twin facets. The migration of facets is mediated by the conservative motion of interfacial disconnections. The {10-12} interfaces contain b2/2 twinning disconnections. The facet junctions serve as sources and sinks for these defects. Two types of disconnections (bbp1/1 and bbp2/2) were observed in basal-prismatic boundary. The dipoles of bbp1/1 disconnections were nucleated in the vicinity of existing defects of this type. Interaction of this dipole with existing bbp1/1 leads to the creation of a bbp2/2 disconnection, which is later absorbed in the facet junction. The nucleation of bbp2/2 dipoles was not observed. In twin embryo growth, the basal-prismatic segments remain coherent with a fixed length,while the twin segments grow indefinitely Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2015
Number of the records: 1