Characterization of a Mg_(95.5)Zn_(1.5)Y_(3)alloy both containing W phase and LPSO phase with or without heat treatment

作     者：Li Zhumin Wan Diqing Huang Yi Ye Shuting Hu Yinglin 

作者机构：School of Materials Science and EngineeringEast China Jiaotong UniversityNanchang 330013China Materials Research GroupFaculty of Engineering and the EnvironmentUniversity of SouthamptonSouthampton SO171 BJUK 

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

年 卷 期：2017年第5卷第2期

页      面：217-224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：the National Natural Science Foundation of China(51361010,51665012) supported by China Scholarship Council 

主　　题：Magnesium alloys LPSO phase Solid solution treatment Corrosion resistance 

摘      要：The influence of solid solution treatment on the microstructure and corrosion resistance of as-cast Mg_(95.5)Zn_(1.5)Y_(3) alloy is *** microstructure of the as-cast Mg_(95.5)Zn_(1.5)Y_(3) alloy mainly consisted ofα-Mg,W(Mg_(3)Zn_(3)Y_(2))phase,and the long period stacking ordered(LPSO)(Mg_(12)ZnY)*** solid solution treatment,most of the W phase disappears gradually with increasing solution treatment time,with only a small amount of W phase distributed as *** LPSO phase slightly dissolved into substrate,and its morphology transitions from blocky shape to rod *** solution treatment of Mg_(95.5)Zn_(1.5)Y_(3) exhibits excellent corrosion resistance,because the Y and Zn atoms became enriched in the matrix and the changed morphologies of the LPSO and W phases were modified through heat *** alloy created with solid solution treatment at 520 ℃ for 10 hours exhibits corrosion potential of−1.419 V,suggesting a significant improvement in corrosion performance.