In situ TEM investigation of electron irradiation and aging-induced high-density nanoprecipitates in an Mg-10Gd-3Y-1Zn-0.5Zr alloy  

作　　者：M.Lv H.L.Ge Q.Q.Jin X.H.Shao Y.T.Zhou B.Zhang X.L.Ma 

机构地区：[1]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,72 Wenhua Road,Shenyang 110016,China [2]School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China [3]Materials Science and Engineering Research Center,Guangxi University of Science and Technology,Liuzhou 545006,China

出　　处：《Journal of Magnesium and Alloys》2024年第5期1841-1853,共13页镁合金学报（英文）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51871222,52171021,and 51801214);Liaoning Provincial Natural Science Foundation(2019-MS-335);the research fund of SYNL。

摘　　要：In-situ electron irradiation and aging are applied to introduce high-density precipitates in an Mg-10Gd-3Y-1Zn-0.5Zr(GWZ1031K,wt.%)alloy to improve the hardness.The results show that the hardness of the Mg alloy after irradiation for 10 h and aging for 9 h at 250℃ is 1.64 GPa,which is approximately 64% higher than that of the samples before being treated.It is mainly attributed to γ'precipitates on the basal plane after irradiation and the high-density nanoscale β'precipitates on the prismatic plane after aging,which should be closely related to the irradiation-induced homogenous clusters.The latter plays a key role in precipitation hardening.This result paves a way to improve the mechanical properties of metallic materials by tailoring the precipitation through irradiation and aging.

关 键 词：Mg alloy Electron beam irradiation HARDENING PRECIPITATES In-situ TEM 

分 类 号：TG146.22[一般工业技术—材料科学与工程]