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International Journal of Scientific & Technology Research

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IJSTR >> Volume 2- Issue 4, April 2013 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Mechanical Characterisation Of Aluminium Bronze-Iron Granules Composite

[Full Text]

 

AUTHOR(S)

O. I. Sekunowo, S. O. Adeosun, G. I. Lawal, S. A. Balogun

 

KEYWORDS

Keywords:- Aluminium-bronze, iron millscale (IMS), mechanical properties, kappa-phase

 

ABSTRACT

ABSTRACT:- Despite some of the desirable characteristics most aluminium bronze exhibits, abysmally deficient responses in certain critical applications necessitate mechanical properties enhancement. Hence, the microstructure and mechanical properties of cast aluminium bronze reinforced with iron granules (millscale) were investigated in this paper. Cast samples of the composite made from metal mould contain millscale in varied amount from 2-10 wt.%. The samples were homogenised at 11000C for 10 minutes in order to relief the as-cast structures. Standard specimens were prepared from these homogenised samples for tensile, charpy impact and microhardness tests while the composite microstructures were studied using an optical microscope. Results show that optimum improved mechanical properties were achieved at 4 wt.% millscale addition with ultimate tensile strength (UTS) of 643.8MPa which represents 10.1% improvement over conventional aluminium-bronze. The composite also demonstrated impact resilence of 83.9J and micro-hardness value of 88.7HRB. Millscale presence in the aluminium bronze system induced a stable reinforcing kappa phase by nucleation mechanism which resulted to enhancement of mechanical properties. However, the composite properties were impaired on millscale addition above 4 wt.% due to grain clustering.

 

REFERENCES

[1]. Aluminium Bronze Alloys for Industry, Copper Development Association Publication. No. 83, 1986, pp. 1-22.

[2]. ISO 428 (2000): “Wrought Copper-Aluminum Alloys – Chemical Composition and Forms of Wrought Products.

[3]. Pisarek, B. P. (2007): The Crystallization of the Aluminium Bronze with Additions of Si, Cr, Mo and/or W. Archives of Materials Science and Engineering, Vol. 28, Issue 8, August 2007, pp. 461-466.

[4]. Aluminum Bronze Family; www.morganbronze.com

[5]. Jun Yang, Mei Ling Chen and Hong Gao (2011): Microstructures and Mechanical Properties of Cast Aluminum Bronze Enhanced by Modified Nano-SiC Powders. Materials Science and Engineering, Vol. 335-336, September 2011, pp. 396-399.

[6]. Oh-Shi Keiichiro and Terry R. McNelley: Microstructural Modification of as-cast Ni Al Bronze by Friction Stir Processing. Metallurgical and Materials Transactions A, Vol. 35, Issue 9, 2004, pp. 2951 – 2961.

[7]. Isaac Cenoz (2010): Scientific Paper UDC: 620. 186: 669. 715 MJOM, Vol. 16(2) 2010, pp. 115-122.

[8]. Hassan, F., Iqbal, J. and Ridley, N.(1985): Microstructure of As-Cast Aluminum Bronze Containing Iron, Materials Science and Technology, Vol. 1, No. 4, April 1985, pp. 312-315.

[9]. Danilov, E. V. (2003): Economical Method of Recycling Metallurgical and Millscale of the Sifter Technology in an Arc Steelmaking Furnace. Metallurgist, Vol. 47, Issue 5-6, 2003, pp. 197-200.

[10]. Seok-Heum Baek, Soon-Hyeok Hong, Seok-Swoocho Denk-Yul Jang and Won-Sik Joo (2010): Optimization of Process Parameters for Recycling of Mil Scale using Taguchi Experimental Design, Journal of Mechanical Science and Technology, Vol. 24, Issue 10, 2010, pp. 2127-2134.

[11]. Murthy, Y. I. (2012): Stabilization of Expansive Soil using Mill Scale, International Journal of Engineering Science and Technology, Vol. 4, No. 2, February 2012, pp. 629-632.

[12]. Saud Al. Otaibi, (2008): Recycling Steel Mill Scale as Fine Aggregate in Cement Mortars. European Journal of Scientific Research. ISSN 1450-216X, Vol. 24, No. 3, pp. 332-338.

[13]. Puga, H., J. Barbosa, D. Soares, F. Silva and S. Ribeiro (2009): Recycling of aluminum Swarf by Direct Incorporation in Aluminum Melts. Journal of Materials Processing Technology, Vol. 209, Issue 11, 2009, pp. 5159-5203.

[14]. Callister, Jr and William, D. (2005): Fundamentals of Materials Science and Engineering, 2ND Edition, John Wiley and Sons, USA, p.199.