Paper Title:
Elastic Properties and Electronic Structure of L12 (Al,Si)3Sc
  Abstract

The method of ultrasoft pseudopotential within the generalized gradient approximation has been employed to study the elastic constants and electronic structure of (Al,Si)3Sc precipitate with L12 structure in Al-base alloys. Based on the calculated results, the elastic properties of (Al,Si)3Sc precipitate were investigated. The Young’s and shear modulus of the polycrystals for (Al,Si)3Sc precipitate were calculated using Voigt-Reuss-Hill averaging scheme. The calculated results of elastic properties showed that the (Al,Si)3Sc precipitate has a strengthening effect in the Al matrix, owing to the larger shear modulus differences between (Al,Si)3Sc and Al matrix. The calculated results also showed that (Al,Si)3Sc precipitate is brittle in nature.

  Info
Periodical
Advanced Materials Research (Volumes 284-286)
Chapter
Materials Physics
Edited by
Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu
Pages
1987-1990
DOI
10.4028/www.scientific.net/AMR.284-286.1987
Citation
Q. Yao, "Elastic Properties and Electronic Structure of L12 (Al,Si)3Sc", Advanced Materials Research, Vols. 284-286, pp. 1987-1990, 2011
Online since
July 2011
Authors
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Price
$32.00
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