Mechanical properties of stir-mixed SiCp-reinforced aluminium composites
บทคัดย่อ
Aluminium composites have found their strength in engineering applications such as automotive, electrical and light-weight applications. To achieve uniform microstructure and good mechanical properties, the fabrication techniques are prime factors in controlling wettability and porosity problems. This research therefore aimed for studying microstructure-mechanical property relation of SiCp-reinforced 356 aluminium composites fabricated by a cost-effective stir casting process, to which three elemental additions, Al-5Ti-B, Sr, and Mg,were investigated. Furthermore, effects of SiCp additions (0-15 wt.%) and T6 heat treatment (530ºC/12h + 155ºC/4 h) on mechanical properties of the composites were also studied. The 356 aluminium ingot was melted at 700ºC then stir-mixed with pre-heated SiCp of 10.5 μm average size at 500 rpm, 615ºC prior to casting into cylindrical permanent molds at 650ºC. Microstructure examination along with hardness and tensile tests were carried out. The results showed that, with Mg and Al-5Ti-B and Sr additions, the optimum SiCp addition was observed to be at 10 wt.% to achieve microstructure homogeneity beneficial for hardness and tensile properties.Downloads
เอกสารอ้างอิง
Abedi, K. and Emamy, M. (2010). The effect of Fe, Mn and Sr on the microstructure and tensile properties of A356 –10% SiC composit. Mater. Sci. Eng. A 527:3733–3740.
Kimapong, K., Tosakul, S., Memon, A. and Klunpracha, N. (2010). Science and Engineering of Materials. Bangkok: Senkage Learning (Thailand) Ltd.
Balasivanandha Prabu, S., Karunamoorthy, L., Kathiresan, S. and Mohanb, B. (2006). Influence of stirring speed and stirring time on distribution of particles in cast metal matrix composite. J. Mater. Process. Technol.171: 268–273.
Lee, J.C., Ahn, J.P., Shim1, J.H., Shi1, Z. and Lee, H.I. (1999). Control of the interface in SiC / Al composite. Scripta. Mater. 41:895–900.
Villegas, M., Sierra, T., Lucas, F., Fern´andez, J.F. and Caballero, A.C. (2007). Oxidation treatments for SiC particles and its compatibility with glass. J. Eur. Ceram. Soc. 27: 861–865.
Urena, A., Martinez, E.E., Rodrigo, P. and Gil, L. (2004). Oxidation treatments for SiC particles used as reinforcement in aluminium matrix composites. Compos. Sci. Technol. 64: 1843–1854.
Hashim, J., Looney, L. and Hashmi, M.S.J.(1999). Metal matrix composites: production by the stir casting method. J. Mater. Process. Technol. 92-93: 1-7.
Limmaneewijit, C. (n.d.) Metallurgy of Aluminium-Silicon in metal moulding industry. Metal Moulding Technology Section, Department of Industrial Engineering, King Monkut’s University of Technology Thonburi.
Emamy, M., Razaghian, A., Lashgari, H.R. and Abbasi, R. (2008). The effect of Al–5Ti–1B on the microstructure, hardness and tensile properties of Al2O3 and SiCcontaining metal–matrix composites. Mater.Sci. Eng. A 485: 210–217.
Guo, J. and Yuan, X. (2009). The aging behavior of SiC / Gr/ 6013Al composite in T4 and T6 treatments. Mater. Sci..Eng. A 499: 212–214.
Hashim, J., Looney, L. and Hashmi, M.S.J. (2001). The wettability of SiC particle by molten aluminium alloy. J. Mater. Process .Technol. 119: 324-328.
Razaghian, A., Emamy, M., Najimi, A.A. and Seyed Ebrahimi, S.H. (2009).Sr effect on the microstructure and tensile properties of A357 aluminum alloy and Al2O3/ SiCA357 cast composites. Mater. Charact.60. : 1361-1369.
Garcia-Hinojosa, J.A., Gonzalez, C.R., Juárez, J.I.and Surappa,M.K. (2004). Effect of Sr addition on an Al–7Si– 10vol.% SiC p cast composites. Mater. Sci. Eng. A 382. : 315–320.
Garcia-Hinojosa, J.A., Gonz´alez R., C., Ju´arez I, J.A. and Surrapa, M.K. (2004). Effect of grain refinement treatment on the microstructure of cast Al–7Si–SiCp composites.Mater. Sci. Eng. A 386: 54–60.
Lashgari, H.R., Emamy, M., Razaghian, A. and Najimi, A.A. (2009). The effect of strontium on the microstructure, porosity and tensile properties of A356–10 % B4C cast composite. Mater. Sci. Eng. A 517: 170–179.
Ravi, K.R., Amaranathan, R.M., Pai, B.C. and Chakraborty, M. (2008). Fluidity of aluminum alloy and composites: A rview. J. Alloy. Compd. 456: 201-210.
Gruzleski,J.E.and Closset, B.M. (1990). The treatment of liquid aluminumsilicon alloys. New York :American foundrymen’s Society, Inc.: 149-152.
de Figueredo, A.M., Kato, A. and Flemings, M. C. (2000).Viscosity of semi-solid a357 alloy in the transient high shear rate regime. Met. Sci Technol. 18 (2):32-36.
Ravi, K.R., Pillai, R.M., Amaranathan, K.R., Pai, B.C. and Chakraborty, M. (2008). Fluidity of aluminum alloy and composite: A review. J. Alloy. Compd. 446 : 201-210
Tzamtzis, S.,Barekar, N.S., Hari Babu, N., Patel, J., Dhindaw, B.K. and Fan, Z. (2009). Processing of advanced Al/SiC particulate metal matrix composites under intensive shearing – A novel Rheo - process. Composites: Part A 40: 144–151.
ดาวน์โหลด
เผยแพร่แล้ว
วิธีการอ้างอิง
ฉบับ
บท
การอนุญาต
ลิขสิทธิ์ (c) 2017 วารสารโลหะ, วัสดุ และแร่
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors who publish in this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
