On Basal slip and basal twinning in sapphire (α-Al2O3)—II. A new model of basal twinning
On Basal slip and basal twinning in sapphire (α-Al2O3)—II. A new model of basal twinning
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DOI：
10.1016/1359-6454(95)00265-0
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发表时间：
1996-05
期刊：
影响因子：
9.4
通讯作者：
P. Pirouz;B. Lawlor;T. Geipel;J. Bilde-Sørensen;A. Heuer;K. Lagerlöf
中科院分区：
文献类型：
--
作者：
P. Pirouz;B. Lawlor;T. Geipel;J. Bilde-Sørensen;A. Heuer;K. Lagerlöf
基于本系列论文第 1 部分中开发的蓝宝石基底滑移的新模型，考虑了基底孪晶的形成。结果表明，当材料在特定的温度和应力范围内变形时，变形孪晶是当前滑移模型的自然产物。该模型基于基础滑移面上的前导部分位错的滑动以及到下一个滑移面的双交叉滑移。该模型预测存在 II 型双胞胎。
Based on a new model for basal slip in sapphire developed in Part 1 of this series of papers, the formation of a basal twin is considered. It is shown that deformation twinning is a natural outgrowth of the present model of slip when the material is deformed in a particular regime of temperature and stress. The model is based on the glide of a leading partial dislocation on a basal slip plane and double-cross-slip to the next-but-one slip plane. The model predicts a Type-II twin.