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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 566Observation of Fisheye Cracks around TiN and Al2O3...

Observation of Fisheye Cracks around TiN and Al₂O₃ Inclusions in Repeatedly Quenched High Carbon Bearing Steel

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Abstract:

Martensitic high-carbon high-strength SAE 52100 bearing steel is one of the main alloys used for rolling contact applications where high wear resistance is required. Refining the prior austenite grain size through repeated heating is a process commonly used to enhance the material’s strength. In this work, the microstructure of repeatedly quenched Ti, N-rich ultra-clean SAE 52100 steel was investigated. The material was melted by an electric furnace and formed by continuous casting and forging, and the crack origin on the fracture surface was investigated. It was found repeated furnace quenching effectively refined the martenstic structure.

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Periodical:

Advanced Materials Research (Volume 566)

Pages:

150-156

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.566.150

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Online since:

September 2012

Authors:

Koshiro Mizobe, Takashi Honda, Hitonobu Koike, Edson Costa Santos, Katsuyuki Kida, Takuya Shibukawa

Keywords:

Al₂O₃, Non-Metallic Inclusion, Refinement, Repeated Heating, SAE 52100, TiN

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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