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Effect of Zr content on the existence form of Zr and as-cast structure of high purity commercial aluminium

  • Qingfeng Zhu , Cheng Zhu , Yanlei Kang , Shuping Kong , Zhihao Zhao and Yubo Zuo
Published/Copyright: October 30, 2018
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 109 Issue 11

Abstract

The effects of Zr content on the existence forms of Zr and as-cast structure of high purity aluminium were investigated under a certain solidification condition. Results show that the existence forms of Zr depend on the Zr content. Zr can completely dissolve in the matrix when Zr content is lower than 0.15 wt.%. Certain agglomeration Al3Zr phases with complex morphology were formed in the aluminium matrix as the Zr content increased up to 0.2 wt.%. The amount and size of the agglomeration which is primary Al3Zr crystals increased when the Zr content increased further to 0.3 wt.%. The effects of Zr content on the grain size of high purity aluminium were limited, as the Zr content increased from 0.05 wt.% to 0.15 wt.%. The average grain size decreased from 492 μm to 159 μm, as the Zr content increased from 0.15 to 0.25 wt.%. The electrical conductivity of aluminium linearly decreased from 62.2% IACS to 58.2% IACS, when the Zr content increased from 0.05 wt.% to 0.15 wt.%. While it remained almost constant at approximately 56.5% IACS for Zr content between 0.25 and 0.3 wt.%.

Keywords: High purity aluminium; As-cast structure; Zr content; Primary Al3Zr phase; Grain refinement
*Correspondence address, Dr. Qingfeng Zhu, Key Laboratory of Electromagnetic Processing of Materials Ministry of Education, Northeastern University, Wenhua Road, Heping District, No. 3, No. 11, Lane, Shenyang 110004, P-R. China, Tel.: +862483687734, Fax: +862483681758, E-mail:

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Received: 2018-03-29
Accepted: 2018-06-28
Published Online: 2018-10-30
Published in Print: 2018-11-12

© 2018, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111702
Keywords for this article
High purity aluminium; As-cast structure; Zr content; Primary Al3Zr phase; Grain refinement

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. An artificial intelligence paradigm in heuristic search of tensile behaviour of titanium alloys
  5. The effect of the cooling rate on the course of oxidation of gamma titanium aluminide alloy
  6. Physical and electrochemical characteristics of low pressure cold sprayed aluminium composite coating on magnesium substrate
  7. The effect of Al2O3 reinforcement particles on the corrosion behavior of Al(Zn) solid solution matrix
  8. Effect of Zr content on the existence form of Zr and as-cast structure of high purity commercial aluminium
  9. Ethylenediamine-assisted synthesis of barium bismuthate microrods and solar light photocatalytic performance
  10. Structural evolution and formation mechanism of LiNi0.6Co0.2Mn0.2O2 during high-temperature solid-state synthesis
  11. Review
  12. Wear behaviour of Mg alloys and their composites – a review
  13. Short Communications
  14. Low-temperature sintering of 0.96(K0.5Na0.5)NbO3-0.04LiNbO3 lead-free piezoelectric ceramics modified with CuO
  15. DGM News
  16. DGM News
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