Atomic-scale role of rare earth solution atoms in suppressing irradiation-induced void evolution in Mg-Y alloyOA
The advancement of nuclear and aerospace technologies is contingent upon materials that exhibit lightweight properties,high strength,and superior radiation tolerance.Void formation within irradiated materials leads to significant degradation of their physical and mechanical characteristics.Alloying in metallic systems markedly improves resistance to irradiation-induced void swelling;however,a lack of direct experimental evidence has constrained the understanding of the specific roles played by alloying elements in void nucleation and evolution.In this study,we directly elucidate the influence of rare-earth solute atoms on irradiation-induced void evolution in a magnesium-yttrium(Mg-Y)alloy under electron irradiation through in situ scanning/transmission electron microscopy(S/TEM).By employing high-angle annular dark-field(HAADF)imaging and quantitative strain analysis,we demonstrate that Y clusters inhibit void growth via pinning and compressive strain fields,resulting in irregular void morphologies.These findings provide foundational insights into irradiation damage mechanisms in Mg-Y alloys and advance atomic-scale understanding pertinent to the design of materials for extreme radiation environments.©2026 Chongqing University.Publishing services provided by Elsevier B.V.on behalf of KeAi Communications Co.Ltd.
Binglu Zhang;Baolong Jiang;Qinghuan Huo;Yongqing Chen;Jin Zhou;Xinyang Yu;Huafeng Liu;Yang He;Yida Deng;Lijie Qiao
Department of Materials Science,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,ChinaDepartment of Materials Science,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China State Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation,School of Materials Science and Engineering,Hainan University,Haikou 570228,ChinaSchool of Materials Science and Engineering,Central South University,Changsha 410083,ChinaDepartment of Materials Science,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,ChinaDepartment of Materials Science,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,ChinaDepartment of Materials Science,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,ChinaState Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation,School of Materials Science and Engineering,Hainan University,Haikou 570228,ChinaDepartment of Materials Science,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,ChinaState Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation,School of Materials Science and Engineering,Hainan University,Haikou 570228,ChinaBeijing Advanced Innovation Center for Materials Genome Engineering,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China
矿业与冶金
In situ TEMMagnesium alloysRare earthElectron irradiationVoids evolution.
《Journal of Magnesium and Alloys》 2026 (6)
P.409-417,9
financial support from the National Natural Science Foundation of China under grants 52071022,52471075,52201063the Postdoctoral Fellowship Program and China Postdoctoral Science Foundationunder Grant Number BX20250295.
评论