Microstructure and plastic anisotropy of fine grained AZ31 magnesium alloy fabricated by differential speed rolling at 473 and 573 K

Title
Microstructure and plastic anisotropy of fine grained AZ31 magnesium alloy fabricated by differential speed rolling at 473 and 573 K
Author(s)
고영건모삽알카심양해웅코티바하마드박병호[박병호]김양곤[김양곤]
Keywords
HIGH-PRESSURE TORSION; AL-ZN ALLOY; MECHANICAL-PROPERTIES; MG ALLOYS; ROOM-TEMPERATURE; TEXTURE; COMPOSITES; EVOLUTION; TWINS; ECAP
Issue Date
201505
Publisher
MANEY PUBLISHING
Citation
MATERIALS RESEARCH INNOVATIONS, v.19, pp.477 - 480
Abstract
Differential speed rolling (DSR) was used to deform AZ31 Mg alloy samples at the two rolling temperatures of 473 and 573 K so as to investigate the effects of temperature on the microstructure and plastic anisotropy. The anisotropies in the mechanical properties of the deformed samples were examined by tension tests with respect to three directions (0 degrees, 45 degrees, and 90 degrees) from the DSR deformation direction. A homogeneous and equiaxed microstructure with a mean grain size of similar to 14 degrees mu m was achieved after DSR deformation at 573 K. Thus, anisotropic behaviour in the mechanical properties was mostly observed in the samples processed by DSR at 473 K. The maximum strength was observed in the 90 degrees direction, and the elongation in the 45 degrees direction was higher than those in other directions. A good combination of high elongation and strength together with the homogenous microstructure was attained on the sample deformed at 573 K.
URI
http://hdl.handle.net/YU.REPOSITORY/32448http://dx.doi.org/10.1179/1432891714Z.0000000001135
ISSN
1432-8917
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공과대학 > 신소재공학부 > Articles
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