Evolution of microstructure and hardness in AZ31 alloy processed by high pressure torsion
SCIE
SCOPUS
- Title
- Evolution of microstructure and hardness in AZ31 alloy processed by high pressure torsion
- Authors
- Straska, J; Janecek, M; Gubicza, J; Krajnak, T; Yoon, EY; Kim, HS
- Date Issued
- 2015-02-11
- Publisher
- ELSEVIER SCIENCE SA
- Abstract
- A commercial MgAlZn alloy (AZ31) was processed by high pressure torsion (HPT) at room temperature, resulting in an extreme microstructure refinement down to the grain size of 150-250 nm. The microstructure evolution during HPT was investigated by transmission electron microscopy and X-ray diffraction line profile analysis. The microhardness was measured as a function of the distance from the center of the disk and the number of HPT revolutions. The detailed analysis of dislocation contrast factors in X-ray diffraction line profiles enables to determine the population of the different slip systems as a function of the imposed strain. The influence of microstructure and defect structure evolution on microhardness is discussed in detail. (C) 2014 Elsevier B.V. All rights reserved.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/26833
- DOI
- 10.1016/J.MSEA.2014.12.005
- ISSN
- 0921-5093
- Article Type
- Article
- Citation
- MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, vol. 625, page. 98 - 106, 2015-02-11
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