Study on the Tensile and Impact Properties of 600MPa HSLA Steel at Different Temperature

Abstract:

The microstructure, tensile and impact property of a 600 MPa HSLA steel plate at different temperature were investigated by tensile and impact tests, metallographic observation, SEM and EDX analysis. The results indicated that the microstructures of the steel after tensile tests were mainly the bainites. As the temperature increased from 300°C to 650°C, the yield strength and tensile strength decreased, the elongation and reduction of area increased, but this steel had a relatively stable tensile property below 400°C. Moreover, as the temperature reduced from 20°C to -80°C, the impact toughness was gradually decreased, and the ductile-brittle transition temperature of this steel was obtained at -57.75°C by using Boltzmann function fitting.

• Periodical: Advanced Materials Research (Volumes 602-604)
• Pages: 426-429
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.602-604.426
• Online since: December 2012
• Authors: Hai He Luo, Han Xiong Dong, Zhong Bo Dong
• Keywords: HSLA Steel, Impact Toughness, Microstructure, Tensile Properties

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