文献类型：期刊文献

英文题名：Improve the Mechanical Properties of Mg-3Al-1Zn Alloy via Simultaneous Annealing and Loading

作者：He, Jiejun Wu, Lushu

第一作者：何杰军

通信作者：He, JJ[1]|[1444053a3247f96f2357f]何杰军;

机构：[1]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China;[2]Guizhou Inst Technol, Sch Mech Engn, Guiyang 550003, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China.|贵州理工学院;

年份：2022

卷号：12

期号：2

外文期刊名：METALS

收录：;Scopus(收录号：2-s2.0-85124321097);WOS:【SCI-EXPANDED(收录号:WOS:000810515300001)】；

基金：This work was supported by the National Natural Science Foundation of China (51501045) and Natural Science Foundation of Guizhou Province ([2019]1141).

语种：英文

外文关键词：magnesium alloys; second phase; annealing; strengthening; yield stress

摘要：A strengthening phenomenon has been demonstrated in the Mg-3Al-1Zn (AZ31) alloy after simultaneous annealing and loading at 180 degrees C. The microstructural analysis reveals that a few second-phase particles appear in the material after direct annealing at 180 degrees C for 20 h. However, a higher quantity of the second-phase particles (Al12Mg17) is observed in the alloy after simultaneous annealing and loading. Further, a high stress is observed to be more beneficial for the precipitation of the particles. It is speculated that the stress applied during annealing can provide a better condition for the nucleation of the precipitates. The enhanced extent of precipitates may play a significant role in preventing the dislocation gliding, thus, leading to a strengthening effect. The observed phenomenon may also provide a novel strategy for strengthening the magnesium alloys.