발간논문

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Vol.19, No.10, 890 ~ 897, 1981
Title
A Study on the Production of high Strength Cast Iron by Al - Cu Addition
허보녕Bo Young Hur, 김수영Soo Yong Kim
Abstract
The effects of Aluminum and Copper addition to the cast iron in hypoeutectic composition range were studied on the shape of graphite, the structure of matrix and the mechanical properties. The results obtained are as follows: 1) When the addition was in the form of Al-Cu (50 to 50) alloy, the shape of graphite was uniformed flake graphite (A Type on A.S.T.M). The tendency of such phenomena was more distinct at the 2.0 wt.% addition of Al-Cu alloy. 2) The addition of Aluminum and copper strengthened the matrix structure. 3) The tensile strength and hardness were increased by the addition of either Al or Cu and Al-Cu alloy. In the case of Al-Cu alloy addition, the tensile strength was increased by 20% and 7% compared with that when either Al or Cu was added, respectively.
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