期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2022.143017
关键词
Magnesium alloys; Precipitation; In-situ TEM; Orowan mechanism; Strengthening mechanism
类别
资金
- Key Program of National Natural Science Foundation of China [51931003]
- National Natural Science Foundation of China [52071178, 52171118, 51901103]
- Projects in Science and Technique Plans of Ningbo City [2019B10083]
- China Postdoctoral Science Foundation [2021M701715]
- Opening Project of the Key Laboratory of Advanced Manufacturing and Intelligent Technology (Ministry of Education) of Harbin University of Science and Technology [KFKT202103]
- Natural Science Founda-tion of Jiangsu Province [BK20211197]
- Jiangsu Key Laboratory of Advanced Micro&Nano Materials and Technology
- Research Center of Nanjing University of Science and Technology
This study reports in-situ transmission electron microscopy observations on the interaction between dislocations and beta' phases in aged Mg-Gd alloys. It was found that the slipping < a > dislocations are squashed into the interface and bow out to bypass the beta' phase, resulting in a zigzag route of plastic flow. The Orowan mechanism is determined as the main strengthening mechanism.
Here we report in-situ TEM observations on interaction between dislocations and beta' phases in aged Mg-Gd alloys. The slipping < a > dislocations squash into the interface and bow out to bypass the beta' phase, leading to a zigzag route of plastic flow. Orowan mechanism is determined as the main strengthen mechanism.
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