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

Diana Maritza Marulanda Cardona | Zendy; Jittraporn Wongsa-Ngam | Zendy; Hernando Jiménez | Zendy; Terence G. Langdon | Zendy

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

Author(s) -

Diana Maritza Marulanda Cardona,

Jittraporn Wongsa-Ngam,

Hernando Jiménez,

Terence G. Langdon

Publication year - 2017

Publication title -

journal of materials research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.832

H-Index - 44

eISSN - 2214-0697

pISSN - 2238-7854

DOI - 10.1016/j.jmrt.2017.05.002

Subject(s) - materials science , microstructure , indentation hardness , scanning electron microscope , pearlite , torsion (gastropod) , crystallite , vickers hardness test , diffraction , ferrite (magnet) , metallurgy , composite material , carbon steel , corrosion , optics , medicine , austenite , physics , surgery

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, Hardnes

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