Abstract
One of recent experimental progresses in strengthening and toughening metals simultaneously is to adopt techniques of surface mechanical attrition treatment (SMAT) and warm co-rolling to 304 stainless steel (SS). To capture deformation behavior and associated damage initiation/evolution process in the co-rolled SMATed 304SS, cohesive finite element method (CFEM) is employed in this paper and simulation results are in agreement with experimental results. Both strengthening effect due to high yield stress of the nanograin layer and toughening effect due to non-localized damage in the nanograin layer are captured. Effect of energy release rate of nanograin layer on failure strain of layered co-rolled SMATed 304SS is investigated. It is found that the more brittle the nanograin layer is, the more potential necking sites in the nanograin layer are, and the more ductile the layered co-rolled SMATed 304SS is.
Original language | English |
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Title of host publication | ISCM II and EPMESC XII - Proc. of the 2nd Int. Symposium on Computational Mechanics and the 12th Int. Conf. on the Enhancement and Promotion of Computational Methods in Engineering and Science |
Pages | 65-70 |
Number of pages | 6 |
Volume | 1233 |
Edition | PART 1 |
DOIs | |
Publication status | Published - 24 Aug 2010 |
Event | 2nd International Symposium on Computational Mechanics, ISCM II, and the 12th International Conference on the Enhancement and Promotion of Computational Methods in Engineering and Science, EPMESC XII - Hong Kong, Macau, Hong Kong Duration: 30 Nov 2009 → 3 Dec 2009 |
Conference
Conference | 2nd International Symposium on Computational Mechanics, ISCM II, and the 12th International Conference on the Enhancement and Promotion of Computational Methods in Engineering and Science, EPMESC XII |
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Country/Territory | Hong Kong |
City | Hong Kong, Macau |
Period | 30/11/09 → 3/12/09 |
Keywords
- CFEM
- damage initiation and evolution
- strengthening and toughening
ASJC Scopus subject areas
- General Physics and Astronomy