Role of Initial Texture on the Plastic Anisotropy of Mg-3Al-1Zn Alloy at Various Temperatures
SCIE
SCOPUS
- Title
- Role of Initial Texture on the Plastic Anisotropy of Mg-3Al-1Zn Alloy at Various Temperatures
- Authors
- Lee, BH; Park, SH; Hong, SG; Park, KT; Lee, CS
- Date Issued
- 2011-01-25
- Publisher
- ELSEVIER
- Abstract
- The effect of initial texture on the anisotropic properties of AZ31 Mg alloys was investigated on the basis of microstructure evolution after compression tests and Lankford parameter (r-value) experiments at various temperatures. Two kinds of sheets were used: one is the cast-and-rolled sheet, and the other is the strip-cast sheet. Compression tests were conducted up to a strain of 0.3 at temperatures of 200-400 degrees C, and tensile tests were performed to obtain the r-value at various temperatures (25-450 degrees C). The results showed that, at all test temperatures, the average r-value of the RD plane were greater than those of the ND and TD planes in the cast-and-rolled material. When comparing the average r-value of the RD plane, the cast-and-rolled material revealed much higher values than those of strip-cast material. It was observed that the cross-sectional shape of RD compressive specimens (the compression axis was parallel to the rolling direction) of cast-and-rolled materials changed from an initial circular shape to an ellipsoidal shape due to the plastic anisotropy. Compression processes of specimens were simulated using a finite element method where the Hill's anisotropic yield criterion was adopted. The simulated results were in a good agreement with experimental data. (C) 2010 Elsevier B.V. All rights reserved.
- Keywords
- AZ31 Mg alloy; Plastic anisotropy; Twinning; Texture; Strip casting; AZ31 MG ALLOY; MAGNESIUM ALLOY; DEFORMATION; MICROSTRUCTURES; COMPRESSION; MECHANISMS; SIMULATION; EVOLUTION; BEHAVIOR; SHEETS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16603
- DOI
- 10.1016/J.MSEA.2010.10.065
- ISSN
- 0921-5093
- Article Type
- Article
- Citation
- MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, vol. 528, no. 3, page. 1162 - 1172, 2011-01-25
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