[논문]Fluidity and Mechanical Properties of Open Cell AZ31 Mg Alloy Foam

Yue, Xue-Zheng; Hur, Bo-Young

doi:10.7777/jkfs.2012.32.3.150

[국내논문] Fluidity and Mechanical Properties of Open Cell AZ31 Mg Alloy Foam 원문보기

한국주조공학회지 = Journal of Korea Foundry Society, v.32 no.3, 2012년, pp.150 - 156

Yue, Xue-Zheng (i-Cube Group, ERI, School of Nano and Advanced Materials Engineering, Gyeongsang National University) , Hur, Bo-Young (i-Cube Group, ERI, School of Nano and Advanced Materials Engineering, Gyeongsang National University)

초록
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발포금속은 초경량 재료로서 폐기공과 개기공의 두 가지 형태의 구조를 지니고 있으며 폐기공은 내충격성, 흡음성, 단열성의 기능을 지니고 있고, 개기공은 필터, 생체지지대, 촉매재, 열방출재 등으로 사용되고 있다. 개기공발포재는 삼차원 구조모양으로 프리커서를 이용한 압력정밀주조나 기공입자용출법으로 제조하고 있으나 기공의 크기나 셀의 형상, 두께 등을 조절하기에 어려움이 있다. 이를 해결하기 위하여 환경친화적인 펄라이트를 사용하여 목적하는 크기의 그래뉼을 제조한 후, 용융마그네슘합금을 감압주조법으로 주조하여 그래뉼의 크기로 기공율을 조절하고, 주형의 온도와 압력에 따른 유동의 길이를 측정하였다. 그래뉼 직경이 2.3 $mm{\O}$ 일때에 주형의 온도 $300^{\circ}C$ 이상, 압력이 5000 Pa 이상에서 유동길이 6.5 cm 이상을 얻었다.

주제어

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가설 설정

5%, (2)The granule bore the seepage pressures without deformation. (3) The granules were easy to move away from the foam metal. (4) The granules were prepared by a kind of economical and environmental friendly material.

제안 방법

In these experiments, the metal bottom was defined as the start, after the pouring Mg alloy, infiltration flow, and solidification. The filling capacity of fixed mould was evaluated by measuring the maximum height of the casting after solidification.

이론/모형

Many methods for their manufacture, characterization and application are being developed [6,7]. In this research, we used investment casting method. It was simple and low cost to cast by vacuum pump.
Open cell AZ31 Mg alloy were fabricated by the gravitycasting method. Effect of seepage pressures and preheat temperature of granule(Φ2.
Dobránszky carried out composite production made by pressure infiltration. Open cell foams, syntactic foams and carbon fiber reinforced metal matrix composites were produced by pressure infiltration method [10]. Fluidity is an important factor for the successful production of castings, and yet the study on the fluidity of open cell AZ31 Mg alloy foam is empty in the world [11].

성능/효과

2) A simple approach was demonstrated that the preheat temperature impacted on the infiltration behavior. The preheat temperature of granule mould was 200℃, 300℃, 400℃,500℃.

참고문헌 (17)

B. Y. Hur, Y. S. Um and S. Y. Kim : Trends in Metals & Materials Engineering, "Development of Fabrication Technology for Al Foam with Lightweight -Strength", 17 (2004) 37-46
B. Y. Hur, S. H. Park and A. Hiroshi : Mater. Sci. Forum, "Viscosity and Surface Tension of Al and Effects of Additional Element", 439 (2003) 51-56
John Banhart: Int. J. Vehicle Des. Manufacture, "Charaterisation and application of cellular metals and metal foams", 37 (2005) 114

상세보기
D-H. Yang, B. Y. Hur and S-R. Yang: J. Alloys Compd, "Study on fabrication and foaming mechanism of Mg foam using $CaCO_3$ as blowing agent", 461 (2008) 221-227

상세보기
Younghwan Song, Soo Han Park, Sang Youl Kim, Changhwan Seo and Boyoung Hur: Solid State Phenom, "A Study on Mg-Al Alloy Foams by Melt Foaming Method", 125 (2007) 1841-1844
P. Sevilla, C. Aparicio, J. A. Planell and F. J. Gil: J Alloy Comp, "Comparison of the mechanical properties between tantalum and nickel-titanium foams implant materials for bone ingrowth applications", 439 (2007), 67-73

상세보기
W. Y Jang: Int J Solid Struct, "On the microstructure of open-cell foams and its effect on elastic properties", 45(7,8) (2008) 1845-1875

상세보기
A. J. and A. K: Metals 2011, "The Manufacture and Characterisation of Aluminium Foams Made by Investment Casting Using Dissolvable Spherical Sodium Chloride Bead Preforms", 1 (2011) 49-64

상세보기
M. G and C. Hintz: Proceeding of material week 2000 conf., "Determination of Parameters for Infiltrated Metallic Foam Composites" (2000) 781.
I. N. O.: Mater Sci Forum, "Composite production by pressure infiltration", 589 (2008) 137-142
J. E. Niesse, M. C. Flemings and H. F. Taylor: Trans. AFS "Application of Theory in Understanding Fluidity of Metals," 67 (1959) 685-697
M. C. Flemings: in Proceedings of the 30th International Foundry Congress, "Fluidity of Metals-Techniques for Producing Ultra Thin Section Castings", (1963) 61-81
I. Jeon and T. Asahina: Acta Mater, "The effect of structural defects on the compressive behavior of closed-cell Al foam", 53 (2005) 3415-3423

상세보기
J. Campbell: Castings, Butterworth-Heinemann, Oxford, Boston, (1993) 288
M. X. Xu: Master thesis(in Chinese), "Preparation and compression property of foamed magnesium alloy", Taiyuan University of Technology in china (2009) 6.
Mukai T, Kanahashi H and Miyoshi T: Scripta Mater, "Experimental study of energy absorption in a closed-celled aluminum foam under dynamic loading", 40 (1999) 921-927

상세보기
Sirong Yu: Eng Mater Des, "Compressive property and energy absorption characteristic of open-cell ZA22 foams", 30 (2009) 87-90

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