Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1576281 | Materials Science and Engineering: A | 2013 | 5 Pages |
Abstract
Hot deformation behavior of Fe-6.5Â wt% Si alloy is studied by hot compression in the temperature range of 773-1373Â K with different strain rates. It is found that dynamic recrystallization is the main softening mechanism in disordered phase regions in 1073-1373Â K, while dynamic recovery is the main softening mechanism in ordered phase regions in 773-973Â K. The strain rate sensitivity increases with temperature in 773-973Â K, while decreases in 1073-1373Â K. The apparent activation energy is calculated to be 211Â kJ/mol in 1073-1373Â K and 478Â kJ/mol in 773-973Â K. The function between steady flow stress and Zener-Hollomon parameter is deduced. Moreover, the relationship between steady flow stress and the grain size after deformation is presented the Hall-Petch relation.
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Authors
Y.F. Liang, J.W. Ge, X.S. Fang, F. Ye, J.P. Lin,