Effect of Precipitation Hardening on Hardness and Microstructure of Austenitic Manganese Steel
Affiliation(s)
Department of Metallurgical and Materials Engineering, Federal University of Technology.PMB, 704, Akure, Nigeria.
Department of Metallurgical and Materials Engineering, Federal University of Technology.PMB, 704, Akure, Nigeria.
ABSTRACT
The effect of precipitation hardening on microstructure and hardness of Austenitic Manganese Steel has been studied. Samples of the steel were machined, autenitized at 1000℃ and held for one hour, water quenched and then aged at different temperatures and holding times. The samples were artificially aged at 600℃ and 700℃ and were held for one, two and three hours. Microstructures and hardness values of the samples were taken. It was found out that sample aged at 700℃ for 2 hours has its carbide particles finely dispersed on the austenite matrix. This led to an increase in the hardness.
The effect of precipitation hardening on microstructure and hardness of Austenitic Manganese Steel has been studied. Samples of the steel were machined, autenitized at 1000℃ and held for one hour, water quenched and then aged at different temperatures and holding times. The samples were artificially aged at 600℃ and 700℃ and were held for one, two and three hours. Microstructures and hardness values of the samples were taken. It was found out that sample aged at 700℃ for 2 hours has its carbide particles finely dispersed on the austenite matrix. This led to an increase in the hardness.
KEYWORDS
precipitation, hardening, ageing, hardness, microstructure, carbide, austenitized, austenitic manganese steel.
precipitation, hardening, ageing, hardness, microstructure, carbide, austenitized, austenitic manganese steel.
Cite this paper
S. Aribo, K. Alaneme, D. Folorunso and F. Aramide, "Effect of Precipitation Hardening on Hardness and Microstructure of Austenitic Manganese Steel," Journal of Minerals and Materials Characterization and Engineering, Vol. 9 No. 2, 2010, pp. 157-164. doi: 10.4236/jmmce.2010.92014.
S. Aribo, K. Alaneme, D. Folorunso and F. Aramide, "Effect of Precipitation Hardening on Hardness and Microstructure of Austenitic Manganese Steel," Journal of Minerals and Materials Characterization and Engineering, Vol. 9 No. 2, 2010, pp. 157-164. doi: 10.4236/jmmce.2010.92014.
References
[1] Aver, H. S., 1981, “Austenitic Manganese Steel: Metal Handbook”, 8th Edition [2] Higgins, R. A., 1993, “Engineering Metallurgy Part 1: Applied Physical Metallurgy”, 6th Edition, ELBS, Cornwall, Page (s): 50-56, 190-215 and 230-235. [3] Katella, R., 1994,”Austenitic Wear Resistant Steel and Method For Heat Treatment”, Patent Paper. [4] Peter, N. W., 2004, “Hadfield’s Manganese Steel and its Performance under Increased Wheel Loads”, Presentation to the 83rd Transportation research Board Annual Meeting, Washington, DC, Page 33 [5] Vander-Voort, G. F., 1996 “Applied Metallographic”, VNB, New York. Page 20.
[1] Aver, H. S., 1981, “Austenitic Manganese Steel: Metal Handbook”, 8th Edition [2] Higgins, R. A., 1993, “Engineering Metallurgy Part 1: Applied Physical Metallurgy”, 6th Edition, ELBS, Cornwall, Page (s): 50-56, 190-215 and 230-235. [3] Katella, R., 1994,”Austenitic Wear Resistant Steel and Method For Heat Treatment”, Patent Paper. [4] Peter, N. W., 2004, “Hadfield’s Manganese Steel and its Performance under Increased Wheel Loads”, Presentation to the 83rd Transportation research Board Annual Meeting, Washington, DC, Page 33 [5] Vander-Voort, G. F., 1996 “Applied Metallographic”, VNB, New York. Page 20.