Investigation of Microstructure and Mechanical Properties of Ultra High Strength Bainitic Steel

M.H. Sheikh Ansari; M. Aghaie-Khafri

doi:10.4028/www.scientific.net/AMM.313-314.77

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Investigation of Microstructure and Mechanical Properties of Ultra High Strength Bainitic Steel
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 313-314Investigation of Microstructure and Mechanical...

Investigation of Microstructure and Mechanical Properties of Ultra High Strength Bainitic Steel

Abstract:

In this study, medium carbon low alloy steel was used to obtain bainitic structures. The lower bainite and tempered martensite-lower bainite structures were achieved by isothermal austempering and up quenching treatment, respectively. Based on the results obtained these structures showed a very good combination of strength and toughness. Furthermore, it has been shown that austenitization time and temperature, as well as austempering time and temperature play a major role in achieving ultra-high strength bainitic steels.