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Numerical Simulation and Process Optimization of Vacuum Investment Casting for Be–Al Alloys

  • Z. H. Wang
  • J. Wang
  • L. B. Yu
  • J. Wu
  • M. Wang
  • B. Su
Article

Abstract

Be–Al alloy castings are widely used in aviation, aerospace and marine industries due to their excellent comprehensive properties. To improve the quality of products, vacuum investment casting of a bracket casting of Be–Al alloys was simulated using the finite-element method and the evolution of the flow field and temperature field as well as the formation of shrinkage porosity were simulated. The simulated results of positions of shrinkage porosity agreed well with the experimental results. The optimized casting parameter with ceramic shell preheat temperature of 500 °C and pouring temperature of 1300 °C was determined by numerical simulation. After the process optimization, a high quality Be–Al alloy casting was successfully produced by pouring once.

Keywords

numerical simulation Be–Al alloys investment casting casting defects finite-element modeling 

Notes

Acknowledgements

This work was financially supported by the Science and Technology Development Foundation of Chinese Academy of Engineering Physics under Grant No. 2015B0203031, and the Science Challenge Program of China under Grant No. TZ20160040201. The authors would like to thank Prof. Haidong Zhao for 3D characterizations of the shrinkage porosities in the present article.

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Copyright information

© American Foundry Society 2018

Authors and Affiliations

  1. 1.Institute of MaterialsChina Academy of Engineering PhysicsJiangyouChina

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