발간논문

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Vol.17, No.6, 468 ~ 474, 1979
Title
The Effect of Aluminium Contents on the Mechanical Properties and Dendritic Morphology in Zn - Al - 2% Cu Casting Alloys
최상호Sang Ho Choi, 강춘식C . S . Kang
Abstract
The effect of aluminium contents on the mechanical properties and dendritic morphology in Zn-Al-2% Cu casting alloys has been investigated experimentally. The results obtained from this study are summarized as follow. 1. Tensile strength is decreased from 33㎏/㎟ to 29㎏/㎟ with the addition of 16, 19, 22% Al and increased from 29㎏/㎟ to 37㎏/㎟ with the addition of 22, 25, 28% Al. 2. Work hardening index (n´) is 2.05 in 22% Al and is increased slightly as the Al content increase or decrease from 22% Al. 3. The primary arm length of dendrite is increased with the addition of 13-22% Al and the other contents of Al constrain primary arm length growth of dendrite. 4. Tensile strength is increased with the secondary arm length increasing of dendrite
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