Abstract In this work, Mo was added into Al melt to reduce the detrimental effect of double-oxide film defect. An air bubble trapped in a liquid metal (2L99), served as an analogy for defect aluminum alloy castings. It found that addition significantly accelerated consumption entrapped by 60 pct after holding 1 hour. 2 sets testbar molds were then cast, with 2L99 and 2L99+Mo alloy, badly design...
