PENGARUH TEMPERATUR TEMPER TERHADAP SIFAT MEKANIK DAN KETAHANAN KOROSI PADUAN Fe-1,52Al-1,44C
On the basis of economic and lower density considerations, Fe-Al-C alloy could be a good candidate for replacing some of the conventional stainless steel. Wherein, Al is used to replace the expensive alloy element in conventional Fe-Cr-C system. The aim of the research is to investigate tempering temperature influence to mechanical properties and corrosion resistance of Fe-1,52Al-1,44C in the 3.5% NaCl solution. Fifty kilograms of Fe-Al-C were prepared from mild steel scrap, high purity aluminium, and Fe-C. The alloy was prepared in a high frequency induction furnace with alloying was done in the ladle. Optical microstructure, mechanical properties and corrosion rate were examined. The corrosion rate, were carried out with immersion methode in 3.5% NaCl. The optical micrograph shows that as cast Fe-1,52Al-1,44C alloy has ferrite and pearlite microstructure and has tendency to become ferritic microstructure with encreasing tempering temperature. Maximun tensile strength and maximum hardness took placed after hardening that was respectively 74,44kg/mm2 and 298,7 VHN. Maximum elongation was reached at 450oC tempering temperature. The result of corrosion testing showed that the alloy has decreasing corrosion rate with the increasing tempering temperature.
Baligidad, R.G., Prakash, U., Ramakrishna Rao, V., Rao, P.K., and Ballal N.B., 1996, Effect of Carbon Content on Mechanical Properties of Electroslag Remelted Fe3Al Based Intermetallic alloys, Journal of Material Science and Teschnology, Vol. 36, No. 12, 1453-1458.
Baligidad, R.G., Prakash, U., and Radha Krishna, 1998, Effect of Carbon Addition on Structure and Mechanical Properties of Electroslag Remelted Fe20wt.%Al alloy, Journal of Material Science and Teschnology, Vol. 249, No. 1-2, 97-102.
Chao, Y.C., and Liu, C.H., 2002, Effect of Mn Content on the Micristructure and Mechanical Properties of Fe10Al-xMn-1.0C Alloy, Materials Transactions, Vol. 3, No. 10, pp. 2635-2642.
Davidson, R.M., DeBold, T. dan Johnson, M.J, 1988, Corrosion of Stainless Steel, dalam ASM Handbook, Metals Park, Ohio
Environmentalchemistry.com, 2008, Environmental, Chemistry & Hazardous Materials News, Careers & Resources, Periodic Table of Elements.
Fontana, G.M., 1988, Corrosion Engineering, 3th ed., McGraw Hill Inc., Singapore.
Frommeyer, 2000, Physical and Mechanical Properties of IronAluminium-(Mn-Si) Lightweight Steels, The 1999 ATS International Steelmaking Conference, Paris. Sec.4.
Honeycombe, R.W.K. dan Bhadeshia, H.K.D.,1995, Steel Microstructure and Properties, 2nd ed., Edward Arnold, London.
Huang, B.X., Wang, X.D., Rong,Y.H., Wang, L., and Jin, L., 2006, Mechanical Behavior and Martensitic Transformation of an Fe-AlSi-Al-Nb Alloy, Materials Science and Engineering A, Vol. 438-440, p. 306-311.
Kobayashi, S., Zaefferer, S., Schneider, A., Raabe, D., and Frommeyer, G., 2005, Optimisation of Precipitation for Controlling Recrystallization of Wrought Fe3Al Based Alloys, Intermetallics, 13, 1296-1303.
Leslie, T., 1983, The Physical Metallurgi of Steels, John Willey and Sons Inc., New York.
Prakash, U. Buckley, R.A., Jones, H. and Sellars, C.M., 1991, Structure and Properties of Ordered Intermetallics Based on the Fe-Al System, ISIJ Int., vol 31, no. 10, 1113-1126.
Shackelford, J.F., 1992, Introduction to Material Science for Engineers, 3th ed., McMillan Publishing Company, New York.
Sikka, V.K., Viswanathan, S., and McKamey, C.G., 1993, in ‘Structural Intermetallic’, (ed. R. Darolia et al.), Warrendale, PA, TMS. pp. 48349.
Tjong, S.C., 1986, Stress Corrosion Cracking behavior of the duplex Fe-10Al-29Mn-0,4C alloy in 20% NaCl solution at 100oC, Journal of Material Science, Vol. 21, Hal.: 1166-1170
Wang, C. J. dan Duh, J. G., 1988, Nitriding in the high temperature oxidation of Fe-31Mn-9Al-6Cr alloy, Journal of Materials science, Vol. 23, Hal.: 769-775
Wang, S., Zhang, H., dan Chen, S.J., 2000, Experiment on Fe-Al-Mn Deoxidizing and Alloying of Lowcarbon Aluminium Killed Steel, Journal Iron Steel Vanadium Titanium, Vol. 21, No. 4., hal. 4449.