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pISSN : 1598-706X / eISSN : 2288-8381


한국주조공학회지 (23권2호 69-76)

Effects of Melt Treatments on Microstructures and Mechanical Properties of A357 Alloy

A357합금에서 용탕처리가 미세조직 및 기계적 특성에 미치는 영향

Jung-Moo Lee, Sung-Hak Lee, Ji-Hyun Yoon, Kyung-Hyun Kim

Korea Institute of Machinery and Materials


The present work was undertaken to investigate the mutual effect of the individual melt treatment commonly applied in aluminum foundries such as grain refining, modification, degassing and filtration on the microstructures and the mechanical properties. A357 alloys were fabricated through various melt treatments such as degassing by gas bubbling filtration, modification via the addition of Al-Sr master alloy, grain refining through the addition of Al-Ti-B master alloy and filtration before pouring of the melt. Each melt treatment was performed at its optimum condition reported in the literatures. The effects of each melt treatment and their interactions on the microstructures and mechanical properties of A357 alloy were examined.


A357, Refinement, Modification, Degassing, Filtration