Statistical Correlations Between Chemical Composition and Mechanical Properties of A516 Grade 65 Steel
Abstract
In order to respond to required demands associated to certain operation conditions, the steels used in petroleum, petrochemical and chemical processing industries must have significant improved mechanical properties. These can be obtained by constant monitoring and controlling of parameters of steelmaking process. The determining factors responsible for improving the mechanical properties of steel are chemical composition, purity and the technological parameters. The injection of an inert gas or by vacuum exposure is effective in reducing non-metallic inclusions and for chemical composition control. These treatments are comprised in the secondary metallurgy and require special installations. It is cheaper to create a modeling tool that can be used for the prediction of mechanical properties, directly in the steel production process by variating its chemical composition. In this paper, by using the linear regression technique, the relationships between certain mechanical properties and the chemical composition of steel A516 Grade 65 have been determined.
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References
[2]. ***, Plate A516 and A387 Pressure Vessel Steels: A Technical Overview, ArcelorMittal USA.
[3]. Kenneth E. Orie, Fred B. Fletcher, Performance characteristics of special clean pressure vessel steel subjected to SSC and HIC testing, paper no. 632, Corrosion 99, April 1999.
[4]. Ken Orie, Charles R. Roper, The effect of PWHT on normalized base - metal properties of ASTM A516 steel, Welding Research Council Bulletin, 481, 2003.
[5]. Turkdogan E. T., Fundamentals of steelmaking, Institute of Materials (ed.), Cambridge University Press, London, UK, 1996.
[6]. Krawczyk J., Pawłowski B., Influence of non-metallic inclusions on the strength properties of screws made of 35B2+Cr steel after softening, J. Achiev. Mat. and Manuf. Eng., 55, p. 721-726, 2012.
[7]. Anisoara Ciocan, Beatrice Tudor, Effect of secondary vacuum treatment on performance characteristics of A516 grade 65 carbon steel, Ugalmat 2016, The 7th Conference on material science and engineering, 19-21, Galati, Romania, May 2016.
[8]. Harada A., Miyano G., Maruoka N., Shibata H., Kitamura S., Composition change of inclusions during ladle treatment by reaction with slag and refractory, 8th International Conference on Clean Steel, Budapest, Hungary, 2012.
[9]. Lorentz Jäntschi, Prezentarea şi procesarea datelor experimentale, Cluj-Napoca, UTPress, 2013.
[10]. Sorana Bolboacă, Corelaţia şi regresia liniară, 2012.
[11]. Vlada M., Calcule statistice si modele de aproximare, Universitatea din Bucureşti, 2012.
[12]. Vacu S., Elaborarea oţelurilor aliate, vol. I and II, Editura tehnică, Bucureşti, 1980 and 1983.