Influence of Mn and Heat Treatment Technology on Microstructure and Mechanical Properties of a Low-Alloy Wear-Resistant Cast Steel Shovel Tooth

Jing Qiang Zhang; Jie Min Du; Ji Wei Guo; Shou Fan Rong; Guang Zhou Wang

doi:10.4028/www.scientific.net/AMR.557-559.34

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 557-559Influence of Mn and Heat Treatment Technology on...

Influence of Mn and Heat Treatment Technology on Microstructure and Mechanical Properties of a Low-Alloy Wear-Resistant Cast Steel Shovel Tooth

Abstract:

The influences of Mn and heat-treatment technology on microstructure and mechanical properties of medium-carbon-low-alloy wear-resistant cast steel were investigated. The results show that the hardness first increases and then drops down with the increase of Mn content, and the best hardness is 54HRC with Mn content 1.5%. The impact toughness first increases and then drops down with the increase of Mn content. The hardness and impact toughness first increase and then drop down with the increases of quenching temperature. The optimal impact toughness can be obtaind by quenching at 920°C and tempering at 200°C. Part of lower bainite and residual austenite and mass of tempered martensite are obtaind after tempering.

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Periodical:

Advanced Materials Research (Volumes 557-559)

Pages:

34-37

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.557-559.34

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Online since:

July 2012

Authors:

Jing Qiang Zhang, Jie Min Du, Ji Wei Guo, Shou Fan Rong, Guang Zhou Wang

Keywords:

Heat Treatment, Mechanical Property, Mn, Wear-Resistant Cast Steel

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