Fatigue crack growth rates and fracture toughness in electroslag refined En 52 steel

Hebsur, Mohan G and Abraham, KP and Prasad, YVRK (1980) Fatigue crack growth rates and fracture toughness in electroslag refined En 52 steel. In: International Journal of Fatigue, 2 (4). pp. 147-152.

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Abstract

En 52 steel has been electroslag refined and the resultant effects of refining on its mechanical properties have been assessed. It was found that refining caused a decrease in fatigue crack growth rates and increases in fatigue strength, fracture toughness, Charpy fracture energy and tensile ductility. Fatigue crack growth rates in region I and in region III were found to be considerably lower in the electroslag refined steel: they were unaffected in region II. The fracture toughness values for the electroslag refined steel are nearly twice those estimated for the unrefined steel. Measurements on heat-treated samples have shown that the electroslag refined steel has a better response to heat-treatment. The improvement in the mechanical properties is explained in terms of the removal of nonmetallic inclusions and a reduction in the sulphur content of the steel.

Item Type:	Journal Article
Publication:	International Journal of Fatigue
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	20 Jul 2009 11:56
Last Modified:	14 Feb 2019 06:42
URI:	http://eprints.iisc.ac.in/id/eprint/20348

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