pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (22권2호 82-88)
Semi-Solid Forming of Al-Zn-Mg-Cu Alloy Applying Low-Temperature Casting Process
저온 주조법을 응용한 Al-Zn-Mg-Cu 합금의 반응고 성형
Jeong-Min Kim, Ki-Tae Kim, Woon-Jae Jung
Korea Institute of Industrial Technology
Al-5.5Zn-2.5Mg-l.5Cu semi-solid slurry was prepared by cooling the liquid metal with a low superheat to a solid and liquid co-existing temperature. Relatively round solid particles could be obtained in the slurry through the simple process. The prepared slurry was deformed into the metallic mold by a press and the mechanical properties of obtained specimens were investigated. Mold filling ability of the alloy slurry was also investigated and compared with that of A356 alloy. Al- Zn-Mg-Cu alloy showed lower mold filling ability than A356 alloy probably because small amount of eutectic phase is present and the heat of fusion generated during solidification is smaller than that of A356 alloy.
semi-solid, slurry, Al, superheat, press, mold filling