Paper Title:
Solute Redistribution Resulting in Growth of Primary Silicon in Cast Hypoeutectic Al-Si Alloys
  Abstract

The experimental data present that primary silicon is precipitated from eutectic and hypoeutectic Al–Si alloy melts. It attributes to solute redistribution on the chemical driving force. Si atoms are easy to segregate to form Si-Si clusters, resulting in primary silicon precipitated from hypereutectic Al–Si alloy. Another reason is that primary silicon is precipitated from solid-liquid interface front once solute concentration in the solidification front exceeds eutectic composition. Solute redistribution equations are derivate from Jackson-Chalmers equation. The third reason is that precious little impurity turn Heterogeneous Nucleation of Si atoms.

  Info
Periodical
Chapter
Chapter 1: Materials Science and Engineering
Edited by
Dongye Sun, Wen-Pei Sung and Ran Chen
Pages
367-371
DOI
10.4028/www.scientific.net/AMM.121-126.367
Citation
S. R. Wang, Y. Z. Wang, L. Y. Yang, R. Ma, Y. Wang, "Solute Redistribution Resulting in Growth of Primary Silicon in Cast Hypoeutectic Al-Si Alloys", Applied Mechanics and Materials, Vols. 121-126, pp. 367-371, 2012
Online since
October 2011
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