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http://dx.doi.org/10.3740/MRSK.2003.13.9.619

Mutual Solubility of Mn and Fe in AZ91 Alloy Melts and Its Application to Composition Control of AZ91D Recycled Ingots  

Kwon, Soon-Il (Department of Materials Science and Engineering, Hanyang University)
Byun, Ji-Young (Division of Materials, Korea Institute of Science and Technology)
Kim, Seon-Jin (Department of Materials Science and Engineering, Hanyang University)
Shim, Jae-Dong (Division of Materials, Korea Institute of Science and Technology)
Publication Information
Korean Journal of Materials Research / v.13, no.9, 2003 , pp. 619-624 More about this Journal
Abstract
This paper describes a method to control Mn and Fe contents in recycled AZ91D ingots, based on the mutual solubility of Mn and Fe in AZ91 alloy melts. For this purpose, Fe solubility with the change of Mn content and temperature was investigated in the homogenized and re-precipitated liquid AZ91 alloy. The increase of the amount of Mn added to the melt resulted in the decrease of Fe content. The data obtained in this study was adopted to the pilot plant for recycling of the scrap. As a result, Mn and Fe contents measured in the recycled ingot were in good agreement with ASTM B93 standard.
Keywords
AZ91D ingot; mutual solubility; homogenized and re-precipitated liquid AZ91 alloy; recycled ingot; ASTM B93;
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