Effect of thermomechanical treatment on texture evolution and superplasticity of a Zn-0.3wt.% Al alloy
SCIE
SCOPUS
- Title
- Effect of thermomechanical treatment on texture evolution and superplasticity of a Zn-0.3wt.% Al alloy
- Authors
- Ha, TK; Jeong, HT; Chang, YW
- Date Issued
- 2005-01
- Publisher
- TRANS TECH PUB LTD
- Abstract
- Texture evolution and superplastic deformation behavior of a quasi-single phase Zn-0.3wt%Al have been investigated. It was attempted to produce a stable and fine-grained microstructure in a dilute Zn-Al alloy through a proper thermomechanical treatment process (TMTP). The grain size of about 1 pair was obtained in the Zn-0.3 wt.% Al alloy and a relatively coarse grain size of 10 pm was also obtained through a subsequent aging treatment. The fine-grained material showed typical rolling texture with basal poles tilted about 30 degrees away from the ND toward RD, while the coarse-grained material showed a typical recrystallization texture with basal poles parallel to ND. A series of load relaxation and tensile tests were conducted at room temperature. According to the internal variable theory of structural superplasticity, the grain boundary characters of fine and coarse-grained materials were different from each other. A large elongation of about 1400% was obtained in fine-grained material at room temperature.
- Keywords
- superplasticity; Zn-0.3Al alloy; rolling texture; load relaxation test; internal variable theory of structural superplasticity; INTERNAL VARIABLE APPROACH; DEFORMATION-BEHAVIOR; GRAIN-SIZE; RELAXATION; GLASS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/24437
- DOI
- 10.4028/www.scientific.net/MSF.495-497.889
- ISSN
- 0255-5476
- Article Type
- Article
- Citation
- MATERIALS SCIENCE FORUM, vol. 495-497, page. 889 - 894, 2005-01
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