Effects of Mn and Ca Additions on Microstructure and Mechanical Properties of Al-Mg Alloy

Se Weon Choi; Young Chan Kim; Chang Seog Kang; Jae Min Jung; Sung Kil Hong

doi:10.4028/www.scientific.net/AMR.813.427

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 813Effects of Mn and Ca Additions on Microstructure...

Effects of Mn and Ca Additions on Microstructure and Mechanical Properties of Al-Mg Alloy

Abstract:

The effects of Mn and Ca contents on the microstructure and mechanical properties in Al-Mg alloy were investigated. The results showed that mechanical properties of Al-4.5wt.%Mg were increased as Mn content was raised from 0.1 to 0.5wt.%. Thermodynamic analysis and FE-SEM observation showed that Al₁₅(Fe,Mn)₃Si₂ phase began to form as Mn content exceeded 0.3wt.%. The case of Ca addition, the tensile strength and elongation of Al-4.5wt.%Mg were decreased as Ca content was increased from 0 to 3wt.%. The maximum solubility of Ca for Al is very lower to 0.074wt.%, the most of Ca precipitated in the form of Al₂Ca phase which is very brittle and the increase of Ca content was reduced the mechanical properties.

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Periodical:

Advanced Materials Research (Volume 813)

Pages:

427-430

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.813.427

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Online since:

September 2013

Authors:

Se Weon Choi, Young Chan Kim, Chang Seog Kang, Jae Min Jung, Sung Kil Hong

Keywords:

Al-Mg Alloy, Casting Alloy, Mechanical Property, Microstructure, Thermodynamic Simulation

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