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Park, Sung Soo
Metal Alloy Design (MADe) Lab
Research Interests
  • Metals and alloys, materials properties (mechanical/physical/electrochemical/functional), biomedical implants, metals corrosion

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Influence of alloying elements on microstructure and microhardness of Mg-Sn-Zn-based alloys

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Title
Influence of alloying elements on microstructure and microhardness of Mg-Sn-Zn-based alloys
Author
Cheng, W. L.Park, Sung SooTang, W. N.You, B. S.Koo, B. H.
Keywords
alloying elements; CALPHAD method; hardness; indentation size effect; magnesium alloys
Issue Date
2010-12
Publisher
ELSEVIER SCIENCE BV
Citation
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, v.20, no.12, pp.2246 - 2252
Abstract
The phase evolution in (88-91)Mg-8Sn-1Zn-X (X=Al, Mn and/or Ce) system was analyzed via CALPHAD method and simulations were used in precise selection of the chemical composition. The influence of the addition of different alloying elements such as Al, Mn and Ce on the microstructure and microhardness of Mg-8Sn-1Zn-based alloys was investigated. Combined addition of Al and Mn shows features distinct from separate addition of Al or Mn. Additions of 1Al and 1Mn to base alloy result in the formation of massive Al-Mn phase in α-Mg matrix grains. Addition of Ce element can refine the second eutectic precipitates and form intermetallic compounds with Sn. Fine rod-like Sn-Ce phase presents mainly on the grain boundaries and plays a role in inhibiting grain growth. The effects of alloying elements on Vickers microhardness and indentation size effect of base alloy were examined.
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DOI
10.1016/S1003-6326(10)60636-X
ISSN
1003-6326
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MSE_Journal Papers
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