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Recent advances in modelling polycrystals with complex microstructures
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DOI：10.1016/S0927-0256(97)00078-5.png)
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摘要
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This paper presents recent advances in modelling mechanical behavior of polycrystalline materials having some kind of spatial correlation between neighbour crystals, In the case of a lamellar (alpha + beta) alloy, we use a 2-site viscoplastic selfconsistent (VPSC) model to show that the correlation between phases has a relevant influence on texture development. In the case of a TiAl intermetallic, we consider a stacking sequence of lamellar twins deforming as an ensemble. This leads to a local constitutive behavior different from the one expected for a single crystal and, therefore, gives a different plastic response at macroscopic level. (C) 1997 Elsevier Science B.V.
Keyword:
two-phase polycrystals
lamellar structures
selfconsistent model
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3.3
论文数:
1.4W
被引数:
3.6W
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