PROCESSING OF GRADE A LOW CARBON STEEL BY EQUAL CHANNEL ANGULAR PRESSING

Year 2020, Volume: 9 Issue: 1, 557 - 564, 30.01.2020

Muhammet Demirtaş

https://doi.org/10.28948/ngumuh.512960

Cited By: 1

Abstract

Grade
A steel was processed using equal channel angular pressing (ECAP). 1 pass ECAP
did not cause considerable decrease in the grain size of the steel. It brought
about two different microstructures on flow and transverse planes of the ECAP
billet, instead. Microstructure consists of elongated ferrite and perlite
grains aligned in a direction having mainly 45° angle with the extrusion direction on the flow plane while nearly
equiaxed grains were formed on the transverse plane. These differences between the
microstructures of two different planes of the ECAP sample is attributed to the
share planes that operative during ECAP. ECAP increased hardness and strength
values of the steel significantly due to the increase in the dislocation
density during the process. However, it decreased elongation to failure
considerably. It was found that impact energy of the ECAP-processed sample is
dependent on the notch position of the Charpy impact test sample

Keywords

Low carbon steel, Grade A steel, Equal channel angular pressing (ECAP

References

• [1] LAMPMAN, H.F., CRANKOVIC, G.M., LAMPMAN S.R., ZORC T.B. ASM Handbook, vol. 1: Properties and Selection: Irons, Steels and High-Performance Alloy, ASM International, Ohio, USA, 1990
• [2] SEKBAN D.M., AKTARER S.M., ZHANG H., XUE P., MA Z.Y., PURCEK G., “Microstructural and Mechanical Evolution of a Low Carbon Steel by Friction Stir Processing”, Metallurgical and Materials Transactions A, 48, 3869–3879, 2017.
• [3] AZUSHIMA, A., KOPP, R., KORHONEN, A., YANG, D.Y., MICARI, F., LAHOTI, G.D., GROCHE, P., YANAGIMOTO, J., TSUJI, N., ROSOCHOWSKI, A., YANAGIDA, A., “Severe plastic deformation (SPD) processes for metals”, CIRP Annals - Manufacturing Technology, 57, 716–735, 2008.
• [4] ZHU, Y.T., LOWE, T.C., LANGDON, T.G., “Performance and applications of nanostructured materials produced by severe plastic deformation”, Scripta Materialia, 51, 825–830, 2004.
• [5] VALIEV, R.Z., ISLAMGALIEV, R.K., ALEXANDROV, I.V., “Bulk nanostructured materials from severe plastic deformation”, Progress in Materials Science, 45, 103-189, 2000.
• [6] LANGDON, T.G., “The principles of grain refinement in equal-channel angular pressing”, Materials Science and Engineering A, 462, 3–11, 2007.
• [7] VALIEV R.Z., LANGDON T.G., “Principles of equal-channel angular pressing as a processing tool for grain refinement”, Progress in Materials Science, 51, 881–981, 2006.
• [8] SARAY, O., PURCEK, G., KARAMAN, I., NEINDORF, T., MAIER, H.J., “Equal-channel angular sheet extrusion of interstitial-free (IF) steel: Microstructural evolution and mechanical properties”, Materials Science and Engineering A, 528, 6573–6583, 2011.
• [9] Zhilyaev, A.P., Langdon, T.G., “Using high-pressure torsion for metal processing: Fundamentals and applications”, Progress in Materials Science, 53, 893–979, 2008.
• [10] MA, Z.Y., “Friction Stir Processing Technology: A Review”, Metallurgical and Materials Transactions A, 39, 642-658, 2008.
• [11] MISHRA, R.S., MA, Z.Y., “Friction stir welding and processing”, Materials Science and Engineering R, 50, 1–78, 2005.
• [12] FUKUDA, Y., OH-ISHI, K., HORITA, Z., LANGDON, T.G., “Processing of a low-carbon steel by equal-channel angular pressing”, Acta Materialia, 50, 1359–1368, 2002.
• [13] KONDAVEETI, C.S., SUNKAVALLI, S.P., UNDI D., KUMAR, L.V.H, GUDIMETLA, K., RAVISANKAR, B., “Metallurgical and Mechanical Properties of Mild Steel Processed by Equal Channel Angular Pressing (ECAP)”, Transactions of the Indian Institute of Metals, DOI 10.1007/s12666-016-0862-3.
• [14] SHIN D.H., PARK K-T., “Ultrafine grained steels processed by equal channel angular pressing”, Materials Science and Engineering A, 410–411, 299–302, 2005.
• [15] KIM J., KIM I., SHIN D.H., “Development of deformation structures in low carbon steel by equal channel angular pressing”, Scripta Materialia, 45, 421-426, 2001.
• [16] EYRES, D.J., Ship Construction (5th Ed.), Butterworth-Heinemann, Oxford, UK, 2001.
• [17] IWAHASHI, Y., FURUKAWA, M., HORITA, Z., NEMOTO, M., LANGDON, T.G., “Microstructural characteristics of ultrafine-grained aluminum produced using equal-channel angular pressing”, metallurgical and materials transactions a, 29, 2245-2252, 1998.
• [18] SEKBAN, D.M., AKTARER, S.M., XUE, P., MA, Z.Y., Purcek, G., “Impact toughness of friction stir processed low carbon steel used in shipbuilding”, Materials Science & Engineering A, 672, 40–48, 2016.