Effect of trace Ce on microstructure, mechanical properties and corrosion behavior of Mg-14Gd-xCe-0.5Zr alloy

被引:1
|
作者
Wang, Dongzhen [1 ]
Chen, Xiaoya [1 ,2 ]
Li, Quanan [1 ,2 ,3 ]
Zhu, Hongxi [1 ,2 ]
He, Huanju [1 ]
Xie, Jiaqi [1 ]
Guo, Tianyao [1 ]
机构
[1] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Peoples R China
[2] Prov & Minist Coconstruct Collaborat Innovat Ctr N, Luoyang 471023, Peoples R China
[3] Longmen Lab, Luoyang 471000, Peoples R China
基金
中国国家自然科学基金;
关键词
Mg-14Gd-xCe-0.5Zr; Ce microalloying; Corrosion behavior; Mechanical property; MAGNESIUM ALLOY; MG;
D O I
10.1016/j.jallcom.2024.178043
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The effects of Ce addition on the microstructure, corrosion behavior and mechanical properties of as-cast Mg14Gd-xCe-0.5Zr (x = 0, 0.3, 0.6, 1 wt%) alloys were investigated in this work. The results show that the introduction of trace Ce promoted the refinement of the alloy grains and achieved a high degree of homogenization of the eutectic phase distribution. The number of cathodic corrosion potentials in the alloy increased significantly, showing more severe micro-galvanic corrosion. Notably, the addition of 0.3Ce reduces the hydrogen evolution rate of the alloy, and increases the weight loss volume and weight loss rate. This is due to the large amount of dissolution of the eutectic phase, and the oxides/hydroxides of Gd and Ce are attached to the magnesium matrix. The weight loss rate of 0.6Ce alloy is only 7.35 mg center dot cm- 2 center dot d- 1, showing the best corrosion resistance. Precipitates are enriched on the surface of 1Ce alloy, and the thicker or aggregated film leads to lower anode utilization. In addition, the introduction of low content of Ce enhances the grain boundary strength, thereby enhancing the mechanical properties. The UTS, YS and EL of 0.6Ce alloy reach 254 MPa, 220 MPa and 4.63 %, respectively. However, with the introduction of excessive Ce, more brittle Mg12Ce phases are accumulated at the grain boundaries, resulting in weakened mechanical properties.
引用
收藏
页数:12
相关论文
共 50 条
  • [31] Effect of Nd on the microstructure and mechanical properties of Mg-8Gd-5Y-2Zn-0.5Zr alloy
    Zhang, Xingguo
    Meng, Linggang
    Fang, Canfeng
    Peng, Peng
    Ja, Fei
    Hao, Hai
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 586 : 19 - 24
  • [32] Microstructure, mechanical properties and corrosion behavior of Mg-1Zn-0.5Ca alloy
    Li, Xuesong
    Wang, Lidong
    Zhao, Jianwu
    Liu, Jiansheng
    Wang, Limin
    ADVANCED MATERIALS AND PROCESSES, PTS 1-3, 2011, 311-313 : 1735 - +
  • [33] Effects of Nd on Microstructure Mechanical Properties of Mg-10Gd-3Y-0.5Zr Alloy
    Yan, Jing-long
    Li, Quan-an
    Zhang, Xing-yuan
    Zhou, Yao
    INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE AND CIVIL ENGINEERING, MSCE 2016, 2016, : 294 - 300
  • [34] Microstructure and Mechanical Properties of Mg-2.6Sm-1.3Gd-0.6Zn-0.5Zr Alloy
    Yuan Ming
    Zheng Ziqiao
    RARE METAL MATERIALS AND ENGINEERING, 2014, 43 (11) : 2787 - 2791
  • [35] Microstructure and mechanical properties of Mg-5Gd-2Y-2Zn-0.5Zr alloy
    Meng, L. G.
    Fang, C. F.
    Peng, P.
    Mi, S. B.
    Zhu, Q.
    Li, N. P.
    Hao, H.
    Zhang, X. G.
    MATERIALS RESEARCH INNOVATIONS, 2014, 18 (01) : 14 - 19
  • [36] Microstructure and Mechanical Properties of Mg-12Gd-2Y-1Sm-0.5Zr Alloy
    Zhou, Yao
    Li, Quan-an
    Chen, Jun
    Zhang, Qing
    Chen, Xiaoya
    PROCEEDINGS OF THE 2015 INTERNATIONAL CONFERENCE ON MATERIALS, ENVIRONMENTAL AND BIOLOGICAL ENGINEERING, 2015, 10 : 985 - 988
  • [37] Microstructure and mechanical properties of Mg-2.6Sm-1.3Gd-0.6Zn-0.5Zr alloy
    Yuan, Ming
    Zheng, Ziqiao
    Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering, 2014, 43 (11): : 2787 - 2791
  • [38] Microstructure and Mechanical Properties of Mg-12Gd-2Y-2Sm-0.5Zr Alloy
    Chen, Zhi
    Li, Quan-an
    Liu, Wenjian
    Song, Xiaojie
    ADVANCED ENGINEERING MATERIALS III, PTS 1-3, 2013, 750-752 : 611 - 614
  • [39] Microstructure and Mechanical Properties of Mg-9Gd-2Y-1Sm-0.5Zr Alloy
    Chen, Xiaoya
    Li, Quan-an
    Jiang, Huizhen
    Chen, Leilei
    MATERIALS SCIENCE, CIVIL ENGINEERING AND ARCHITECTURE SCIENCE, MECHANICAL ENGINEERING AND MANUFACTURING TECHNOLOGY, PTS 1 AND 2, 2014, 488-489 : 205 - 208
  • [40] Effect of Nd addition on the microstructure and mechanical properties of extruded Mg-Gd-Zr alloy
    Lei, Bin
    Jiang, Bin
    Yang, Huabao
    Dong, Zhihua
    Wang, Qinghang
    Yuan, Ming
    Huang, Guangsheng
    Song, Jiangfeng
    Zhang, Dingfei
    Pan, Fusheng
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2021, 816