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题名: Mapping deformation mechanisms in lamellar titanium aluminide
作者: Ji, ZW;  Lu, S;  Hu, QM;  Kim, D;  Yang, R;  Vitos, L
发表日期: 2018-2-1
摘要: Breakdown of Schmid's law is a long-standing problem for exploring the orientation-dependent deformation mechanism in intermetallics. The lack of atomic-level understanding of the selection rules for the plastic deformation modes has seriously limited designing strong and ductile intermetallics for high-temperature applications. Here we put forward a transparent model solely based on first principles simulations for mapping the deformation modes in gamma-TiAl polysynthetic twinned alloys. The model bridges intrinsic energy barriers and different deformation mechanisms and beautifully resolves the complexity of the observed orientation-dependent deformation mechanisms. Using the model, one can elegantly reveal the atomic-level mechanisms behind the unique channeled flow phenomenon in lamellar TiAl alloys. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Recommended Citation:
Ji, ZW,Lu, S,Hu, QM,et al. Mapping Deformation Mechanisms In Lamellar Titanium Aluminide[J]. Acta Materialia,2018,144:835-843.

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