热处理对Mg-Gd-Y-Zr合金微观组织的影响

doi:10.13251/j.issn.0254-6051.2024.05.015

金属热处理 ›› 2024, Vol. 49 ›› Issue (5): 94-99.DOI: 10.13251/j.issn.0254-6051.2024.05.015

热处理对Mg-Gd-Y-Zr合金微观组织的影响

王浩宇¹, 李海冉², 高永浩¹

1.中南大学材料科学与工程学院, 湖南长沙 410083;
2.北京遥感设备研究所, 北京 100143

收稿日期:2023-10-15 修回日期:2024-04-01 出版日期:2024-05-25 发布日期:2024-06-28
通讯作者: 高永浩,副教授,博士,E-mail:yonghao.gao@outlook.com
作者简介:王浩宇(1999—),男,硕士研究生,主要研究方向为镁合金高温氧化,E-mail:wangncd@126.com。
基金资助:
中南大学研究生创新项目(2022XQLH044)

Effect of heat treatment on microstructure of Mg-Gd-Y-Zr alloy

Wang Haoyu¹, Li Hairan², Gao Yonghao¹

1. School of Materials Science and Engineering, Central South University, Changsha Hunan 410083, China;
2. Beijing Institute of Remote Sensing Equipment, Beijing 100143, China

Received:2023-10-15 Revised:2024-04-01 Online:2024-05-25 Published:2024-06-28

摘要/Abstract

摘要： 对Mg-Gd-Y-Zr系合金在350 ℃下进行高温退火,并利用光学显微镜、扫描电镜和X射线衍射手段对退火过程中的表面氧化行为进行了系统表征。结果表明,退火过程中合金发生了显著的变化,Gd和Y元素沿初始晶界和合金表面聚集;样品发生不均匀氧化,即初始晶界的氧化速度高于晶粒内部;氧化膜主要成分为(Gd_x,Y_2-x)O₃。

关键词: Mg-Gd-Y-Zr合金, 高温退火, (Gd_x,Y_2-x)O₃氧化膜

Abstract: Mg-Gd-Y-Zr alloy was annealed at 350 ℃, and the surface oxidation behavior during the annealing process was systematically characterized using optical microscope, scanning electron microscope, and X-ray diffraction. The results show that significant changes occur in the alloy during the annealing process, with Gd and Y elements aggregating along the initial grain boundaries and alloy surface. The specimen undergoes uneven oxidation, where the oxidation rate at the initial grain boundary is higher than that inside the grain. The main component of the oxide film is (Gd_x,Y_2-x)O₃.

Key words: Mg-Gd-Y-Zr alloy, high temperature annealing, (Gd_x,Y_2-x)O₃ oxide film

中图分类号:

TG146

王浩宇, 李海冉, 高永浩. 热处理对Mg-Gd-Y-Zr合金微观组织的影响[J]. 金属热处理, 2024, 49(5): 94-99.

Wang Haoyu, Li Hairan, Gao Yonghao. Effect of heat treatment on microstructure of Mg-Gd-Y-Zr alloy[J]. Heat Treatment of Metals, 2024, 49(5): 94-99.

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热处理对Mg-Gd-Y-Zr合金微观组织的影响

Effect of heat treatment on microstructure of Mg-Gd-Y-Zr alloy

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