Effects on hardness and microstructure of AISI 1020 low-carbon steel processed by high-pressure torsion

Diana Maritza Marulanda Cardona; Jittraporn Wongsa-Ngam; Hernando Jimenez; Terence G. Langdon

Journal of Materials Research and Technology (Oct 2017)

Effects on hardness and microstructure of AISI 1020 low-carbon steel processed by high-pressure torsion

Diana Maritza Marulanda Cardona,
Jittraporn Wongsa-Ngam,
Hernando Jimenez,
Terence G. Langdon

Affiliations

Diana Maritza Marulanda Cardona: Research Group in Energy and Materials (REM), Faculty of Mechanical Engineering, Universidad Antonio NariÃ±o, BogotÃ¡, Colombia
Jittraporn Wongsa-Ngam: Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
Hernando Jimenez: Research Group in Energy and Materials (REM), Faculty of Mechanical Engineering, Universidad Antonio NariÃ±o, BogotÃ¡, Colombia
Terence G. Langdon: Materials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton, United Kingdom; Corresponding author.

Journal volume & issue: Vol. 6, no. 4
pp. 355 – 360

Abstract

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Low-carbon steel AISI 1020 was subjected to high-pressure torsion (HPT) with 6.0Â GPa pressure through 1/4â5 turns. The microstructures of the samples in each turn were studied by means of X-ray diffraction (XRD) analyzing the changes in micro-strain, crystallite size and lattice parameter. Vickers testing was utilized to study the microhardness behavior of the samples subjected to HPT processing. The morphology evolution of the samples and especially the changes in ferrite and pearlite structures were studied for different numbers of turns using scanning electron microscopy (SEM). Keywords: 1020 steel, High pressure torsion, Hardness

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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