研究了差压铸造不同工艺参数对A357合金二次枝晶间距的影响。
The effect of counter-pressure casting parameters on secondary dendrite arm spacing (SDAS)of A357 alloy was studied.
结果表明，提高冷却速率使合金二次枝晶间距及碳化物的尺寸减小。
The results indicate that both the length of secondary dendrite spacing and the size of carbides reduce with the increasing of cooling rate.
用数学回归的方法得到了AZ91镁合金的凝固冷却速度与二次枝晶间距的定量关系式。
The quantitative relationship between secondary dendrite arm spacing and solidification cooling rate of AZ91 was obtained by regressive analysis.
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