液相线半连续铸造A356铝合金二次加热合金组织与工艺

材料导报, 2002, 16(5): 72-74.

1.东北大学材料电磁过程教育部重点实验室,沈阳,110006

2.东北大学材料电磁过程教育部重点实验室,沈阳,110006

3.东北大学材料电磁过程教育部重点实验室,沈阳,110006

基金项目: 国家自然科学基金(59974009)

Remelting Structure and Technology of Liquidus Semi-continuous Casting of A356 Alloy

采用电子显微镜及图象分析仪,研究了液相线铸造A356铝合金在二次加热过程中的组织变化.结果表明,在固液两相区内,随着加热温度的升高,α相的生长和球化的速度变快.二次加热最佳工艺制度为590℃下保温10min,此时,晶粒平均等级圆直径为38.5μm,晶粒平均圆度为1.92.

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