Mechanical properties of dual phase steel quenched in bitumen medium

Adediran, Adeolu A (2015) Mechanical properties of dual phase steel quenched in bitumen medium. Leonardo Electronic Journal of Practices and Technologies, 14 (26). pp. 1-6. ISSN ISSN 1583-1078

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Abstract

The mechanical properties of a dual phase steel treated in different intercritical windows and subjected to bitumen as the quenching medium was investigated. The viscosity of the quenchant was altered at several rate, the morphology of phases formed was characterized. Also, the quenched samples produced ferrite-martensite phases obtained at different intercritical windows. The tensile and hardness behaviour of the structures was examined; the microstructures were characterized. It was observed that samples intercriticaly heat treated at 790°C and held for 60mins, bitumen quenched at 125°C, offers the highest impact toughness, while its counterpart at 730°C soaked for 30mins, bitumen quenched at 125°C offered the least impact toughness value. Sample intercriticaly treated at 790°C and held for 45mins in a 150°C quenching, offered the peak hardness factor. However, samples at 790°C held at 45mins and bitumen quenched at 150°C possessed relatively the best combination of tensile properties, hardness and impact energy. The water quenched samples at 790°C held for 60mins has the peak hardness value. The micrographs as well showed a uniformly distributed dual phase structure of ferrite and martensite at various volume fractions.

Item Type: Article
Subjects: Q Science > Q Science (General)
T Technology > TJ Mechanical engineering and machinery
T Technology > TN Mining engineering. Metallurgy
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Engr Adeolu Adesoji ADEDIRAN
Date Deposited: 28 Jun 2017 16:42
Last Modified: 28 Jun 2017 16:42
URI: http://eprints.lmu.edu.ng/id/eprint/667

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