Microstructure Observation of AM60 Magnesium Alloy Solidified by Rapidly Quench

Abstract:

In solidification theory, with a slow cooling rate such as sand mold casting, it is easy to segregate the solute aluminum near the grain boundary of primary α-Mg phase under the solidification in Mg-Al system alloys. Thus, volume fraction of none-equilibrium crystallized β-Mg₁₇Al₁₂ phase showed the higher value compared with metal mold casting with faster cooling rate. However, in our microstructure observation results, the volume fraction of β phase in permanent mold castings was larger than that of sand mold castings. In the present study, these contradictory behavior was investigated by observation of as-solidified microstructure obtained from rapid cooling castings at the just below the solidus temperature of 723, 773 and 823K.

• Periodical: Advanced Materials Research (Volume 409)
• Pages: 339-342
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.409.339
• Online since: November 2011
• Authors: Tatsuya Maekawa, Mitsuaki Furui, Susumu Ikeno, Tomoyasu Yamaguchi, Seiji Saikawa
• Keywords: AM60 Magnesium Alloy, As-Cast Process, Mg₁₇Al₁₂, Rapid Quench

References

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