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Influences of Initial Composition and Solid Back Diffusion on the Solidification Path of Al–Fe–Si Alloys

  • Guang Wei Zhao
  • Chong Ding
  • Xi Cong Ye
  • Cai Hua Huang
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

The influence of initial composition and the united solid back diffusion (SBD) effects on the calculated solidification paths (SP) of a series AlFe–Si ternary eutectic alloy were analyzed. The calculation programme was coupled with Thermo-Calc to calculate equilibrium for phase diagram information. The calculated results showed that initial compositions and SBD coefficient had important effects on SP of the AlFe–Si ternary eutectic alloys. The SP of the five AlFe–Si ternary alloys were divided into three categories: \( L \to (L + \beta ) \to (L + \alpha + \beta ) \to (L + \alpha + \beta + \text{Si}) \), \( L \to (L + \alpha ) \to (L + \alpha + \beta ) \to (L + \alpha + \beta + \text{Si}) \), and \( L \to (L + \alpha ) \to (L + \alpha + \text{Si}) \to (L + \alpha + \beta + \text{Si}) \). It was found that the volume fraction of eutectic phase decreases obviously with the increase of the SBD coefficient. Solute distribution coefficients of KFe and KSi in Al–0.08Fe–4.8Si alloy were also calculated and analyzed.

Keywords

Al–Fe–Si Solid back diffusion Solidification path 

Notes

Acknowledgements

We thank a lot for the financial support from the National Natural Science Foundation of China (Grant Nos. 51604162 and 51604161). We wish to thank Harbin Institute of Technology for providing the phase diagram information and data used in this paper. And we thank the opening fund of Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance (2017KJX12).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Guang Wei Zhao
    • 1
    • 2
  • Chong Ding
    • 2
  • Xi Cong Ye
    • 2
  • Cai Hua Huang
    • 2
  1. 1.Hubei Key Laboratory of Hydroelectric Machinery Design & MaintenanceChina Three Gorges UniversityYichangChina
  2. 2.College of Mechanical and Power EngineeringChina Three Gorges UniversityYichangChina

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