Recycling of Steel AISI 52100 Gotten by the Route of Powder Metallurgy

Abstract:

The AISI 52100 steel is a material widely used in the industry due to its high fatigue resistance, dimensional stability, high hardness and wear resistance. This steel is used for production of ball bearings, stamping tools, etc. In case of production of ball bearings and its track this material is spherodized because, due to its high content of carbon, about 1%, it has high mechanical strength making it impossible to cold forming. To obtain a wear resistant surface, after forming, this material is hardened and tempered. Normally to obtain the AISI 52100 steel, arc electric melting furnace is used. This work aims the reuse of AISI 52100 steel by powder metallurgy route, starting from the machined chips using high energy mill (planetary) to obtain the powder. Then, the powder was uniaxially pressed into a press with a load of 4 tons, to form the specimen, later on pressed in an isostatic press at a pressure of 300MPa to obtain a better densification. To analyze the powder morphology and the phases obtained after sintering, was used a scanning electron microscope and X-ray diffraction to calculate the crystallite size. It was verified that with more than 10 hours of grinding, the crystallite size does not change significantly, the particles gained rounded shapes with a size distribution between 30 and 5μm. The microstructure obtained by the two routes was nearly identical after sintering.

• Periodical: Materials Science Forum (Volume 805)
• Pages: 325-330
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.805.325
• Online since: September 2014
• Authors: Wellington S. Diogo*, Dalton G.B. de Souza, Rayana F. Rodrigues Lourenço, M.L.M. Noronha Melo, Kátia R. Cardoso, Gilbert Silva
• Keywords: Powder metallurgy, Recycling, Steel

References

[1] E.N. Bamberger. Materials for rolling element bearings. InW. J. Anderson, editor, Bearing Design - Historical Aspects, Present Technology and Future Problems, pages 1–46, San Antonio, Texas, 1980. ASME.

[2] J. Cappel, M. Weinberg, and R. Flender: Steel Grips Vol. 2 (2004), p.261.

[3] H.K.D.H. Bhadeshia: Progress in Materials Science Vol. 57 (2012), p.268.

[4] C.A. Stickels: Metallurgical Transactions Vol. 5 (1974), p.865.

[5] K. Tsubota, T. Sato, Y. Kato, K. Hiraoka, and R. Hayashi. Bearing steels in the 21st century. In J.J.C. Hoo and W. B. Green, editors, Bearing Steels: into the 21st Century, pages 202–215, Pennsylvania, USA, 1998. American Society for Testing of Materials.

DOI: 10.1520/stp12129s

[6] J.M. Beswick: Metallurgical & Materials Transactions A Vol. 20 (1989), p. (1961).

[7] C.V. Darragh, J.J. Donze, and P.C. Weigel: Metal Progress Vol. 100 (1971), p.74.

[8] H. Brandis, F. Berentzen, S. Engineer, and W. Schmidt: H¨arterei-technische Mitteilungen Vol. 39 (1984), p.173.

[9] S.J. Harris, G. Krauss, M.T. Siniawski, Q. Wang S. Liu and Y. Ao: Wear Vol. 249 (2001), p.1004.

[10] J.D. Bressan, G.A. Battiston, R. Gerbasi, D.P. Daros and L.M. Gilapa: Journal of Materials Processing Technology Vol. 179 (2006), p.81.

DOI: 10.1016/j.jmatprotec.2006.03.070

[11] A.F. Padilha: Materiais de Engenharia Microestrutura e Propriedades. (Hemus Editora Limitada São Paulo, 1997).

[12] V. Chiaverini: Metalurgia do Pó. (Ed. ABM, 4ª ed. São Paulo, 2001).

[13] Powdered Metals Technology, John McDermott, Ed. Noyes Data Corporation, London, England (1974).

[14] C. Suryanarayana: Progress in Materials Science Vol. 46 (2001), p.1.

[15] R.D. Froes, F.H. Suryanarayana, C. Ward-Close and R.P. Goodwin: Powder Metallurgy Vol. 39 (1996), p.63.

DOI: 10.1179/pom.1996.39.1.63

[16] U.U. Gomes, M. Furukava, S.R.S. Soares, L.A.O. Alves and C.P. Souza, Study on Sintering and Hardness of 316L stainless steel reinforced with tantalum carbide, Euro PM Congress Et Exhibition Toulouse, France, (2007).