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Numerical analysis of twin thickening process in magnesium alloys

SYSNO ASEP	0480460
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Numerical analysis of twin thickening process in magnesium alloys
Author(s)	Šiška, Filip (UFM-A)_{RID, ORCID} Stratil, Luděk (UFM-A)_ORCID Čížek, J. (CZ) Ghaderi, A. (AT) Barnett, M. (AT)
Number of authors	5
Source Title	Acta Materialia. - : Elsevier - ISSN 1359-6454 Roč. 124, FEB (2017), s. 9-16
Number of pages	8 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	Magnesium alloy ; Twinning ; Crystal plasticity ; FEM
Subject RIV	JG - Metallurgy
OECD category	Materials engineering
R&D Projects	GJ15-21292Y GA ČR - Czech Science Foundation (CSF)
Institutional support	UFM-A - RVO:68081723
UT WOS	000393000800002
EID SCOPUS	84994364991
DOI	10.1016/j.actamat.2016.10.068
Annotation	A finite element study of the stress field evolution around the {1012} tensile twin of different thickness in magnesium alloy is performed. The system is represented by the 2D models of one and three elastic elliptical inclusions with different aspect ratios surrounded by the plastic matrix. Anisotropic elasticity and crystal plasticity theory are used to describe the material behavior. Numerical results for single inclusion overestimate the initial stress for the stable twin aspect ratio by a factor of two compared to the experimental results. Multiple inclusions case obtains values closer to the experimental ones. Therefore it is concluded that the process of twin thickening cannot be solved within the analysis of the single inclusion and an interaction between twins in the same and neighboring grains plays a crucial role during the twin thickening process.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2018

Number of the records: 1