pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (32권1호 38-43)
Effects of Mg and Cu Amounts on the Casting Characteristics and Tensile Property of Al-Zn-Mg-Cu Alloys
Al-Zn-Mg-Cu 합금의 주조성 및 인장특성에 미치는 Mg 및 Cu 첨가량의 영향
Ki-Tae Kim, Young-Suk Lim, Jeong-Min Kim*
Korea Institute of Industrial Technology, *Hanbat National University
The effects of Mg and Cu amounts on the casting characteristics and tensile property of Al-Zn-Mg- Cu alloys were investigated for the development of high strength aluminium alloys for gravity mold casting. Increase of copper amounts in Al-6%Zn-3%Mgy% Cu alloys resulted in reduction of the fluidity of these alloys and had little effects on the tensile property of these alloys. Increase of magnesium amounts from 1.0wt% to 3.3wt% in Al-6%Zn-x%Mg-0.5%Cu alloys resulted in reduction of the elongation of these alloys from 12% to 3% and increase of the tensile strength of these alloys from 340MPa to 450MPa, but had little effects on the fluidity of these alloys.
Aluminum alloy, Mold casting, Mold filling, Fluidity, High strength.
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