Effect of Tempering Temperature on Mechanical Properties of High Strength Wear Resistant Cast Steel

Abstract:

This paper mainly studied the high temperature quenching oil quenching, tempering temperature on the influence of high strength steel mechanical properties of wear resistant. The results show that high strength and toughness wear-resistant cast steel with 880°C× 30min after oil quenching, the hardness of 38.6HRC steel, the impact toughness value reaches 40.18J/cm². After 200°C, 400°C and 600°C tempering, with the increase of the tempering temperature, the hardness decreased linearly, as by 600°C tempering, the hardness has been reduced to 22.3HRC. Impact toughness with the tempering temperature, the overall upward trend, the impact toughness of some reduced at 400°C, the highest impact toughness value reaches 113.34J/cm². From the fracture morphology can be seen, with the increase of tempering temperature, ductile fracture increased, by 600°C tempering is dimple fracture, obviously can not see the traces of brittle fracture.

• Periodical: Advanced Materials Research (Volumes 791-793)
• Pages: 440-443
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.791-793.440
• Online since: September 2013
• Authors: Hong Bo Li, Jing Wang, Han Chi Cheng, Chun Jie Li, Xing Jun Su
• Keywords: Mechanical Property, Tempering Temperature, Wear Resistant Cast Steel

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