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Effects of Zn content on microstructures and mechanical properties of as-cast Mg–4Y–xZn alloys

  • Ruyou Fan (a1), Zili Liu (a1), Xiqin Liu (a1), Yang Liu (a1), Han Yin (a1) and Jian Li (a2)...
Abstract
Abstract

Effects of Zn content on microstructures and mechanical properties of as-cast Mg–4Y–xZn alloys (x = 1, 2, 3, 4) have been studied in the article. The results indicate that the X phase is formed firstly, and the X phase, X + W phases, and W phase precipitated in order when the Zn contents increased from 1 to 4 wt%. The secondary dendritic arm spacing of the tested alloys first decrease as the Zn content increases within the range of 1–2% and then it increases. The ultimate tensile strength (UTS) and elongation of the four experimental alloys increase until the addition of Zn reaches to 3%, with the maximum values of 213.6 MPa and 11.82%, respectively. Besides, the fracture behaviors of Mg–4Y–1Zn, Mg–4Y–2Zn, and Mg–4Y–3Zn were a quasi-cleavage fracture, while Mg–4Y–4Zn belonged to cleavage.

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a) Address all correspondence to this author. e-mail: liuzili@nuaa.edu.cn
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Contributing Editor: Jürgen Eckert

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Journal of Materials Research
  • ISSN: 0884-2914
  • EISSN: 2044-5326
  • URL: /core/journals/journal-of-materials-research
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