The Phase Equilibria of the Al-Co-Er System at 400 and 600℃

  • Ligang Zhang Central South Univeersity
  • Linghong Zheng
  • Fenyan Zhao
  • Libin Liu
  • Dong Wang
  • Chenjian Wu
Keywords: Phase Equilibria, Al-Co-Er, Aluminum alloys

Abstract


The 400℃ and 600℃ isothermal sections of the Al-Co-Er system were studied assisted with X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Electron Probe Micro-Analysis (EPMA) techniques. 18 three-phase fields are identified in the 400℃ isothermal section. The maximum solid solubilities of Al in Co3Er and Co2Er are 13.93 at.% and 16.13 at.%, respectively. Whereas the maximum solid solubilities of Co in Al2Er, Al2Er3 and AlEr2 are 6.93 at.%, 6.65 at.% and 6.49 at.%, respectively. And the solid solution range of λ is 22.22 at.% Al-44.44 at.% Al. While the 600℃ isothermal section includes 20 three-phase fields. The maximum solid solubilities of Al in Co17Er2 and Co7Er2 are 10.17 at.% and 10.24 at.%, respectively. Whereas the maximum solid solubilities of Co in Al2Er and Al2Er3 are 3.63 at.% and 2.01 at.%, respectively.

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Published
2021/11/18
How to Cite
Zhang, L., Zheng, L., Zhao, F., Liu, L., Wang, D., & Wu, C. (2021). The Phase Equilibria of the Al-Co-Er System at 400 and 600℃. Journal of Mining and Metallurgy, Section B: Metallurgy, 57(3), 359-370. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/31368
Issue
Vol. 57 No. 3 (2021)
Section
Original Scientific Paper

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