标题:Characterizing the interactions of edge dislocation dipole in hexagonal close packed Ti-Al alloys
作者:Wu, Hao ;Leng, Jinfeng ;Teng, Xinying ;Su, Tao ;Li, Qinggang ;Li, Jinkai ;Wu, Junyan ;Xu, Daokui ;Zhu, Yongchang
作者机构:[Wu, Hao ;Leng, Jinfeng ;Teng, Xinying ;Li, Qinggang ;Li, Jinkai ;Wu, Junyan ;Xu, Daokui ] School of Materials Science and Engineering, University of 更多
通讯作者:Wu, Hao
来源:Materials and Design
出版年:2019
卷:164
DOI:10.1016/j.matdes.2018.107559
摘要:The aim of the present work is to elucidate the interaction between dislocation dipoles decorated by trace addition of solute atoms in the model material of as-annealed coarse-grained Ti-3Al (weight percent, wt%) alloys. The morphology, activity, structure, strain field, and interaction of dislocation cores were systematically characterized. Theoretical predictions of equilibrium distribution of edge dislocation dipoles presenting an angle of 45° relative to each other were experimentally demonstrated. More importantly, we observed for the first time the 45°-rotating of strain fields around the dislocation core along a clockwise direction for stress equilibrium which is driven by the dislocation-dislocation interactions.
© 2018 Elsevier Ltd
收录类别:EI
资源类型:期刊论文
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