Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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The Effect of Thickening Agent on Foaming and Mechanical Properties of A356 Alloy

A356 합금의 발포 특성 및 기계적 성질에 미치는 점증제의 영향

  • Tak, Byeong-Su (i-cube center, ERI, ReCAPT, School of Nano and Advanced Materials Engineering, Gyeongsang National University) ;
  • Kim, Byeong-Gu (i-cube center, ERI, ReCAPT, School of Nano and Advanced Materials Engineering, Gyeongsang National University) ;
  • Jeong, Seung-Reung (i-cube center, ERI, ReCAPT, School of Nano and Advanced Materials Engineering, Gyeongsang National University) ;
  • Hur, Bo-Young (i-cube center, ERI, ReCAPT, School of Nano and Advanced Materials Engineering, Gyeongsang National University)
  • 탁병수 (아이큐브 사업단, ERI, ReCAPT, 경상대학교) ;
  • 김병구 (아이큐브 사업단, ERI, ReCAPT, 경상대학교) ;
  • 정승룡 (아이큐브 사업단, ERI, ReCAPT, 경상대학교) ;
  • 허보영 (아이큐브 사업단, ERI, ReCAPT, 경상대학교)
  • Received : 2010.10.09
  • Accepted : 2010.12.14
  • Published : 2010.12.31
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Abstract

The viscosity of foam metal is necessary to get the pores, but it is difficult to manufacture net-shape foam, because the fluidity decreases by increasing viscosity. In this study, the A356 alloy which has good fluidity and less defect was selected and fabricated to foam metal. To understand about effect of thickening agent on foaming and mechanical properties, quantity of thickening agent was changed. The pore size, porosity and distribution of foam metal were measured by i-solution program. And compression test were performed by UTM. In case of 3.0wt% Ca in thickening agent, it is found that most of foam consist of homogeneous shape, and the growth height had the highest value of 204 mm in the all fabricated foams. The porosity was 93% and compressive strength was 3.1 MPa. In the microstructure, the $Al_2Si_2Ca$ intermetallic compound and Ti were observed. The vickers hardness value rose with increasing viscosity value.

Keywords

References

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