Research difference of strain distribution and microstructure evolution between rolling direction and transverse direction of AM50 Mg alloy plate by digital image correlation

Li, Qiang and Hua, Fuan and Li, Jianping and Wang, Hao (2015) Research difference of strain distribution and microstructure evolution between rolling direction and transverse direction of AM50 Mg alloy plate by digital image correlation. Advances in Materials Science and Engineering, 2015. ISSN 1687-8434

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Abstract

The rolling direction (RD) and transverse direction (TD) of AM50 Mg alloy plate were drawn by tensile test while Digital Image Correlation (DIC) was applied to record local strain distribution and evolution. Then, the microstructure in the maximum strain position was observed so as to find the reason causing the difference between RD and TD specimen. Finally, the fracture surface morphology of the broken specimen was observed by scanning electron microscope (SEM) to determine the crack types. Through the analysis, it is found that the critical failure equivalent strains in the RD specimen and TD specimen are 0.1675 and 0.118, respectively, and the maximum equivalent strain position is the crack source; more twinning is generated in the RD specimen than that of the TD specimen, which indicates that twinning plays an important role in affecting its plasticity. The fracture surface morphology indicates that the RD specimen fracture is quasi-cleavage fracture while the TD specimen shows character of cleavage fracture.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Copyright © 2015 Qiang Li et al. This is an open access article distributed under the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 24 Feb 2016 02:43
Last Modified: 02 Aug 2016 04:34
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091308 Solid Mechanics
Identification Number or DOI: 10.1155/2015/175873
URI: http://eprints.usq.edu.au/id/eprint/28881

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