고압 금형주조용 Al-9%Si-0.3%Mg 합금의 Fe, Mn 함량이 인장특성에 미치는 영향 = Effect of Fe and Mn Contents on the Tensile Property of Al-9%Si-0.3%Mg Alloy for High Pressure Die Casting

다국어 초록 (Multilingual Abstract)

Effect of Fe and Mn contents on the tensile properties has been studied in Al-9wt%Si-0.3wt%Mg alloy. As Fe content of Al-9wt%Si-0.3wt%Mg-0.5wt%Mn alloy increased from 0.15wt% to 0.45wt%, tensile strength of as-cast alloy decreased from 192 MPa to 174 MPa, and elongation of the alloy also decreased from 4.8% to 4.2%. Decrease of these properties can be explained as the formation of plate shape, β-Al5FeSi phase with high Fe/Mn ratio of the alloy. However when Mn content of Al-9wt%Si-0.3wt%Mg-0.45wt%Fe alloy increased from 0.3wt% to 0.5wt%, tensile strength of T6 aged alloy increased from 265 MPa to 275 MPa, and elongation of the alloy increased from 2.3% to 3.6%. These improvements attribute to chinese script, α-Al15(Mn,Fe)3Si2 phase shape-modified from β-Al5FeSi phase with low Fe/Mn ratio of the alloy.

참고문헌 (Reference)

1 Y. Xiufang, "The Spheroidisation of Needle-Form Iron Compounds in an Al-Si alloy" 51 : 39-, 1992

2 H. Koch, "Silafont-36, the new low iron high-pressure die-casting alloy"

3 Y. Awano, "Non-Equilibrium Crystallisation of AlFeSi Compound in Melt-Superheat Al-Si Alloy Castings" 98 : 889-, 1990

4 L.Ceschini, "Microstructure, tensile and fatigue properties of the Al-10Si-2Cu alloy with different Fe and Mn content cast under controlled conditions" 209 : 5669-, 2009

5 Vorren O, "Microstructure and mechanical properties of AlSi (Mg) casting alloys" 92 : 459-, 1984

6 Couture, A., "Iron in aluminum casting alloys-A literature survey" 6 : 9-17, 1981

7 Mascre, C., "Influence of iron and manganese on type AS13(Alpax) alloys" 108 : 4330-4336, 1995

8 J. L. Jorstad, "Future technology in Aluminum die casting" 9 : 18-25, 2006

9 H. J. Kim, "Effects of melt super-heating on the shape modification of βAlFeSi intermetallic compound in AC2B aluminum alloy" 21 : 179-, 2001

10 Y. H. Tan, "Effects of Be and Fe additions on the micro-structure and mechanical properties of A357.0 alloys" 26A : 1195-, 1995

11 L. A. Naraynan, "Dissolution of iron intermetallics in Al-Si alloys through nonequilibrium heat treatment" 26A : 2161-, 1995

12 L. A. Narayanan, "Crystallization behavior of iron-containing intermetallic compounds in 319 aluminum alloy" 25A : 1761-, 1994

13 M. Makhlouf, "Casting characteristics of Aluminum die casting alloys" ACRC 2002

14 김현유, "A3569합급의 α-Al(Fe,Mn)Si 정출상에 미치는 Mn의 영향" 대한금속·재료학회 43 (43): 413-417, 2005