跳至主要内容

Comparative Studies on Microstructure and Mechanical Properties of Granulated Blast Furnace Slag and Fly Ash Reinforced AA 2024 Composites

Read full paper at:
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=48169#.VEXH-FfHRK0

Composites are most promising materials of recent interest. Metal matrix composites (MMCs) possess significantly improved properties compared to unreinforced alloys. There has been an increasing interest in composites containing low density and low cost reinforcements. In view of the generation of large quantities of solid waste by products like fly ash and slags, the present expensive manner in which it is discarded, new methods for treating and using these solid wastes are required. Hence, composites with fly ash and granulated blast furnace (GBF) slag as reinforcements are likely to overcome the cost barrier for wide spread applications in automotive and small engine applications. In the present investigation, AA 2024 alloy-5 wt% fly ash and GBF slag composites separately were made by stir casting route. Phase identification and structural characterization were carried out on fly ash and GBF slag by X-ray diffraction studies. Scanning electron microscopy with energy dispersive X-ray spectroscopy EDS was used for microstructure analysis. The hardness and compression tests were carried out on all these alloy and composites. The SEM studies reveal that there was a uniform distribution of fly ash and GBF slag particles in the matrix phase and also very good bonding existed between the matrix and reinforcement. Improved hardness and mechanical properties were observed for both the composites compared to alloy; this increase is higher for Al-fly ash composite than Al-GBF slag composite.
Cite this paper
Murthy, I. , Babu, N. and Rao, J. (2014) Comparative Studies on Microstructure and Mechanical Properties of Granulated Blast Furnace Slag and Fly Ash Reinforced AA 2024 Composites. Journal of Minerals and Materials Characterization and Engineering, 2, 319-333. doi: 10.4236/jmmce.2014.24037. 
 

[1] Akio, K., Atsushi, O., Toshiro, K. and Hiroyuki, T. (1999) Fabrication Process of Metal Matrix Composite with Nano Size SiC Particle Produced by Vortex Method. Journal of Japan Institute of Light Metals, 49, 149-154. http://dx.doi.org/10.2464/jilm.49.149
[2] Rohatgi, P.K. (2001) Cast Metal Matrix Composites Past, Present and Future. In: Invited Silver Anniversary Lecture by American Foundry Society, AFS Transactions, 633.
[3] Rohatgi, P.K., Gupta, N. and Daoud, A. (2008) Synthesis and Processing of Cast Metal Matrix Composites and Their Applications. ASM Handbook. Casting: Vol. 15. ASM International, 1149-1164.
[4] Hosking, F.M., Folgar Portillo, F., Wunderlin, R. and Mehrabian, R. (1982) Composites of Aluminium Alloys: Fabrication and Wear Behaviour. Journal of Materials Science, 17, 477-498.
http://dx.doi.org/10.1007/BF00591483
[5] Weiss, D. (1996) Using Metal Matrix Composite Castings. Processing, Properties and Applications of Cast Metal Matrix Composites, Cincinnati, 289.
[6] Rohatgi, P.K., Guo, R.Q., Huang, P. and Ray, S. (1997) Friction and Abrasion Resistance of Cast Aluminum Alloy-Fly Ash Composites. Metallurgical and Materials Transactions A, 28, 245-250.
[7] Flores-Vélez, L.M., Chávez, J., Hernández, L. and Dominguez, O. (2001) Characterization and Properties of Aluminium Composite Materials Prepared by Powder Metallurgy Techniques Using Ceramic Solid Wastes. Materials and Manufacturing Processes, 16, 1-16. http://dx.doi.org/10.1081/AMP-100103693
[8] Kumar, V., Abraham Zacharia, K. and Sharma, P. (2007) Fly Ash Utilization: Indian Scenario & Case Studies. http://www.tifac.org.in/news/flyindia.htm
[9] Matsunaga, T., Kim, J.K., Hardcastle, S. and Rohatgi, P.K. (2002) Crystllinity and Selected Properties of Fly Ash Particles. Materials Science and Engineering A, 325, 333-343. http://dx.doi.org/10.1016/S0921-5093(01)01466-6
[10] http://www.nationalslag.org/
[11] Reginald Bashforth, G. (1973) The Manufacture of Iron and Steel, Vol. 1. B.I. Publications, New Delhi, 122-136.
[12] Wu, G.H., Dou, Z.Y., Jiang, L.T. and Cao, J.H. (2006) Damping Properties of Aluminium Matrix—Fly Ash Composites. Materials Letters, 60, 2945-2948. http://dx.doi.org/10.1016/j.matlet.2006.02.018
[13] Ashby, M.F. and Jones, D.R.H. (1980) Engineering Materials: An Introduction to Their Properties and Applications. Pergamon Press, New York.
[14] (2004) Indiana University. http://www.geology.iupui.edu/research/SoilsLab/procedures/bulk/Index.htm
[15] Natarajan, N., Vijayarangan, S. and Rajendran, I. (2006) Wear Behaviour of A356/25SiCp Aluminium Matrix Composites Sliding against Automobile Friction Materials. Wear, 261, 812-822.
http://dx.doi.org/10.1016/j.wear.2006.01.011
[16] Akhlaghi, F. and Zare-Bidaki, A. (2009) Influence of Graphite Content on the Dry Sliding and Oil Impregnated Sliding Wear Behavior of Al 2024-Graphite Composites Produced by in Situ Powder Metallurgy Method. Wear, 266, 37-45. http://dx.doi.org/10.1016/j.wear.2008.05.013
[17] Valdez, S., Campillo, B., Perez, R., Martinez, L. and Garcia, A. (2008) Synthesis and Micro Structural Characterization of Al-Mg Alloy-SiC Particle Composite. Materials Letters, 62, 2623-2625.
http://dx.doi.org/10.1016/j.matlet.2008.01.002            eww141021lx
标签：

评论

发表评论

此博客中的热门博文

Does Immigration Promote the Investment of the Monopolistic Firm?

In the present paper, we examine the effect of increasing uncertainty of immigrants’ growth on the optimal timing of investment of a firm that has a monopolistic power over the labor market. It is revealed that when the uncertainty of immigrants’ growth is more than a threshold level, increasing uncertainty of immigrants’ growth accelerates the optimal timing of firms’ investment and enhances the economic growth, even if the uncertainty of immigrants’ growth is formulated by the geometric Brownian motion, which is in sharp contrast to the standard result that an increase in the uncertainty postpones the optimal timing. With an increase in the immigrants over the past ten years, workforces in the host countries have been growing significantly to the extent that the immigrants represent 70% of the increase in the workforce in Europe, and 47% in the United States as OECD indicates. In the present paper, we attempted to investigate the effect of increased uncertainty caused by the growi...
发表评论
阅读全文

Education Policy Implementation: A Mechanism for Enhancing Primary Education Development in Zanzibar

Education is one of the fundamental rights of individuals; therefore, the government of a country needs to develop and strengthen educational policy and quality as well as to ensure that everyone has equal access to basic education. The improvement of access and quality of education in the world is becoming as an essential factor in development, whereas the basic education (primary school), is acknowledged as a foundation of the higher educational development for every country. To fulfill this goal, governments introduce several policies and procedures; however, it requires some reforms and participation from the politician, policymakers, and other stakeholders to re-examine educational policy so that it can lead to multiplication and betterment of the reforms. Educational reforms actually focus on accountability. A positive educational development and reform is very challenging and needs more effort and strategy on how to use and utilize the resources effectively as such it can achie...
发表评论
阅读全文