Paper Title:
Microstructural Evolution of AZ91 Alloy Containing 3%Ca Prepared by Cooling Slope
  Abstract

Globulization of the grain refined AZ91 magnesium alloy with Ca on a cooling slope was investigated. Dendritic morphology of the grains was transferred into round and well distributed small particles as a result of grain-refinement effect of Ca in the alloy. Semi-solid holding of the alloy was carried out at different temperatures to improve the spherecity of the globules. Results show that, remelting at 540 °C for 30 min provides the best shape factor for the alloy. The study of coarsening kinetic in this alloy showed lower growth rate alternative other research which used same condition for produce semi-solid billet just in using Ca.

  Info
Periodical
Solid State Phenomena (Volumes 141-143)
Edited by
G. Hirt, A. Rassili, A. Bührig-Polaczek
Pages
427-432
DOI
10.4028/www.scientific.net/SSP.141-143.427
Citation
A. Khosravani, H. Aashuri, P. Davami, A. Narimannezhad, A. Foroughi, M. Kiani, "Microstructural Evolution of AZ91 Alloy Containing 3%Ca Prepared by Cooling Slope", Solid State Phenomena, Vols. 141-143, pp. 427-432, 2008
Online since
July 2008
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$32.00
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