+Advanced Search
Microstructures and properties of Mg-0.5Zr-1.8Zn-xGd bio-magnesium alloys
Author:
Affiliation:

School of Materials Science and Engineering,Henan University of Science and Technology

Clc Number:

TG146.2

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    The effects of Gd content on the microstructure, mechanical properties and corrosion resistance of as-cast Mg-0.5Zr-1.8Zn-xGd bio-magnesium alloy were studied at high melting temperature (780±5 ℃). The results show that the grain size of the alloy decreases with the increase of Gd content at the range of 0-2.5wt%. The alloy without Gd is mainly composed of α-Mg and a small amount of dispersed micron Zr particles, while the alloy containing Gd is mainly composed of α-Mg and different morphologies of (Mg, Zn)3Gd phase. The mechanical properties of the alloy increase at first and then decrease with the increase of Gd content. When the Gd content is 1.5wt%, the alloy has better mechanical properties. At the same time, the corrosion resistance increases at first and then decreases with the increase of Gd content. The uniformly distributed and fine reticulated second phase at 1.5wt% Gd content makes it better corrosion resistance. In the immersion test for 120 h, the static corrosion rate is 0.801±0.04 mm/a, and the corrosion morphology is relative uniform.

    Reference
    Related
    Cited by
Get Citation

[Yao Huai, Xiong Yi, Liu Ya, Li Huan, Shi Huina. Microstructures and properties of Mg-0.5Zr-1.8Zn-xGd bio-magnesium alloys[J]. Rare Metal Materials and Engineering,2020,49(12):4271~4279.]
DOI:10.12442/j. issn.1002-185X.20191080

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:December 23,2019
  • Revised:January 13,2020
  • Adopted:February 20,2020
  • Online: January 13,2021
  • Published: