Four new orientation relationships of Mg_(17)Al_(12) phase with magnesium matrix in Mg-8Al-0.5Zn alloys

作     者：Feiya Liu Renlong Xin Xin Wen Xinfu Gu Qing Liu 

作者机构：Joint International Laboratory for Light Alloys(MOE)College of Materials Science and EngineeringChongqing UniversitySha Zheng Jie 174Sha Ping Ba District Chongqing 400044China National Engineering Research Center for Mg AlloysChongqing UniversityChongqingChina School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijingChina Key Laboratory for Light-weight MaterialsNanjing Tech UniversityNanjingChina 

出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)

年 卷 期：2023年第11卷第12期

页      面：4689-4695页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China (Project No.51871036,52071040 and 51421001) the open funding of International Joint Laboratory for Light Alloys (MOE),Chongqing University 

主　　题：Mg alloys Precipitate Orientation relationship Crystallography Edge-to-edge matching model 

摘      要：Although the non-basal precipitates, those not parallel to the basal plane, are more effective to block basal slip in Mg-Al alloys, the crystallographic orientation relationship(OR) between these precipitates and the α-Mg matrix has not been well established. In this work, the crystallography of the non-basal Mg_(17)Al_(12) precipitates in AZ80 alloy was systematically investigated by transmission electron microscopy(TEM). By tilting to a suitable electron beam direction, different kinds of non-basal precipitates were recognized in TEM, and the following four new ORs between the non-basal Mg_(17)Al_(12) precipitates and the matrix were revealed: ■, and ■.Furthermore, these ORs and their habit planes were explained using the edge-to-edge matching model. The findings in this work can provide some guidelines for designing the microstructure of Mg-Al alloys to enhance their precipitation hardening potential.