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首页> 外文期刊>Philosophical Magazine Letters >Migration of ordered domain boundaries and its effect on the lamellar interfaces in Ti-Al-based alloys
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Migration of ordered domain boundaries and its effect on the lamellar interfaces in Ti-Al-based alloys

机译：Ti-Al基合金中有序畴界的迁移及其对层状界面的影响

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摘要

Microstructural investigations have been carried out on a fully lamellar Ti_(49)Al_(47)Cr_2Nb_2 alloy in both the as-hot-isostatically-pressed and the annealed conditions by quantitative transmission electron microscopy studies. The proportions of twin and pseudotwin interfaces in the as-hot-isostatically-pressed condition and the relationships between the γ lamellae in the annealed condition were examined. These structural measurements demonstrate that the formation of the lamellar microstructure is not controlled only by the nucleation and growth of the orientation variants. The results are discussed in terms of the occurrence of a migration process of ordered domain boundaries. Finally, a mechanism for the formation of the lamellar microstructure is proposed.
机译：通过定量透射电子显微镜研究，在热等静压和退火条件下，对全层Ti_（49）Al_（47）Cr_2Nb_2合金进行了显微组织研究。研究了在等静压状态下双晶和假双晶界面的比例以及在退火状态下γ薄片之间的关系。这些结构测量结果表明，层状微结构的形成不仅受取向变体的成核和生长控制。将根据有序域边界的迁移过程的发生来讨论结果。最后，提出了形成层状微结构的机理。

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