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Effect of Mn on the Microstructure and Hardness of Gear Steel Treated by Quenching and Partitioning Process

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Abstract:

By adding Mn into SAE8620 gear steel, the effect of Mn on the microstructure and hardness of steel treated by quenching and partitioning process is investigated in this research. Microstructure is observed. Hardness is measured, after that it is converted into tensile strength. And the content of austenite is determined by X-ray diffraction analysis. It is found that higher content of Mn increases the content of martensite and reduces that of blocky ferrite and also leads to higher hardness of steel. In addition, XRD pattern shows obvious existence and enhancement of retained austenite.

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Periodical:

Advanced Materials Research (Volumes 1120-1121)

Pages:

939-943

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1120-1121.939

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Online since:

July 2015

Authors:

Yi Fei Chen, Heng Hua Zhang*

Keywords:

Mn, Quenching and Partitioning, Retained Austenite, SAE8620 Gear Steel

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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