Underlying slip/twinning activities of Mg-xGd alloys investigated by modified lattice rotation analysis

The inconsistencies regarding the fundamental correlation between Gd content and slip (twinning) activities of Mg alloys appeal further investigations. However, the traditional slip dislocations analysis by TEM is time-consuming, and that by SEM/EBSD cannot recognize the partial slip modes. These ur...

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Bibliographic Details
Published inJournal of magnesium and alloys Vol. 11; no. 3; pp. 998 - 1015
Main Authors Yang, Biaobiao, Shi, Chenying, Ye, Xianjue, Teng, Jianwei, Lai, Ruilin, Cui, Yujie, Guan, Dikai, Cui, Hongwei, Li, Yunping, Chiba, Akihiko
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.2023
KeAi Communications Co., Ltd
Subjects
Grain boundary segregation
Mg-Gd alloy
Modified lattice rotation analysis
Non-basal slips
Postponed twinning
Modified lattice rotation analysis
Postponed twinning
Grain boundary segregation
Non-basal slips
Mg-Gd alloy
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Summary:The inconsistencies regarding the fundamental correlation between Gd content and slip (twinning) activities of Mg alloys appeal further investigations. However, the traditional slip dislocations analysis by TEM is time-consuming, and that by SEM/EBSD cannot recognize the partial slip modes. These urge a more efficient and comprehensive approach to easily distinguish all potential slip modes occurred concurrently in alloy matrix. Here we report a modified lattice rotation analysis that can distinguish all slip systems and provide statistical results for slip activities in Mg alloy matrix. Using this method, the high ductility of Mg-Gd alloy ascribed to the enhanced non-basal slips, cross-slip, and postponed twinning activities by Gd addition is quantitatively clarified.
ISSN:2213-9567
2213-9567
DOI:10.1016/j.jma.2021.06.008