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Effect of Heat Treatment on Microstructure and Mechanical Properties of SAE 1025 Steel: Analysis by one-way ANOVA

Joseph, O. O and Joseph, O. O and Leramo, R.O. and Ojudun, O.S. (2015) Effect of Heat Treatment on Microstructure and Mechanical Properties of SAE 1025 Steel: Analysis by one-way ANOVA. J. Mater. Environ. Sci., 6 (1). pp. 101-106. ISSN 2028-2508

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Abstract

The effect of heat treatment at 850oCon the microstructure and mechanical properties of SAE 1025 carbon steel has been studied. Annealing, normalizing and age-hardening heat-treatments at 850oC were used for the experimental work. Hardness tests, tensile tests and metallography were carried out on the heat-treated and control samples. The results were further analyzed using the one-way ANOVA test. Results obtained showed significant differences in the microstructure and mechanical properties of the different heat-treated samples. The hardness profile determined using a Brinell ball indenter showed decrease in hardness of the heat-treated samples when compared with the control. A microstructure of enhanced quality was obtained with normalizing heat-treatment. A higher tensile strength of 313.55MPa was obtained with annealing heat treatment in comparison to age-hardening (212.94MPa), normalizing (167.79MPa) and the control test (269.12MPa). ANOVA test confirmed the results at 90% confidence and further showed that there was significant difference amid the four test conditions.

Item Type: Article
Uncontrolled Keywords: Heat treatment, mechanical properties, ANOVA, steel
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 13 Jun 2017 07:35
Last Modified: 13 Jun 2017 07:35
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/8177

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