Quantitative Estimates of Repeatedly Quenched High Carbon Bearing Steel

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 materials 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. In order to further understand the structure refinement we need to develop a new quantitative evaluation method. In this paper, the homology method is applied. We can estimate the situation of refinement quantitatively.

• Periodical: Applied Mechanics and Materials (Volume 372)
• Pages: 273-276
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.372.273
• Online since: August 2013
• Authors: Kazuaki Nakane, Koshiro Mizobe, Edson Costa Santos, Katsuyuki Kida
• Keywords: Al₂O₃, Homology, Non-Metallic Inclusion, Refinement, Repeated Quenching, SAE 52100, TiN

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