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Microstructural evolution of AZ91 alloy containing 3%Ca prepared by cooling slope

Khosravani, A ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.4028/www.scientific.net/ssp.141-143.427
  3. Publisher: Trans Tech Publications Ltd , 2008
  4. Abstract:
  5. 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
  6. Keywords:
  7. Coarsening ; Cooling ; Grain refinement ; Growth rate ; Magnesium alloys ; Microstructural evolution ; AZ91 ; AZ91 magnesium alloys ; Ca addition ; Coarsening kinetics ; Cooling slopes ; Dendritic morphology ; Grain refinement effects ; Grain refining ; Calcium alloys
  8. Source: Semi-Solid Processing of Alloys and Composites 10 - Selected, peer reviewed papers from the 10th International Conference on Semi-Solid Processing of Alloy and Composites, S2P 2008, Aachen, 16 September 2008 through 18 September 2008 ; Volume 141-143 , 2008 , Pages 427-432 ; 10120394 (ISSN); 9771012039401 (ISBN)
  9. URL: https://www.scientific.net/SSP.141-143.427