Disclinations, amorphization and microcrack generation at grain boundary junctions in polycrystalline solids
Disclinations, amorphization and microcrack generation at grain boundary junctions in polycrystalline solids
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DOI：
10.1080/01418619408242248
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发表时间：
1994-10
影响因子：
1.6
通讯作者：
M. Gutkin;I. Ovid’ko
中科院分区：
文献类型：
--
作者：
M. Gutkin;I. Ovid’ko
本文从理论上研究了多晶固体中晶界结处的位错分裂(位错衰减为小功率位错)，并与局域非晶化有关。揭示了分裂过程的能量特征。结果表明，这一过程有效地竞争了晶界三结处微裂纹的产生，导致变形多晶材料的塑化。
Abstract Splitting of disclinations (decay of disclinations into small-power disclinations) at grain boundary junctions in polycrystalline solids is examined theoretically, and related to local amorphization. Energetic characteristics of the splitting process are revealed. It is shown that such a process competes effectively with microcrack generation at triple junctions of grain boundaries, causing a plastification of deformed polycrystalline materials.