The Betti Number of Prior Austenite Structure of Repeated Quenching Bearing Steels (JIS, SUJ2)

Abstract:

In order to evaluate the effect of heating pattern on the grain structure refinement of bearing steel (JIS, SUJ2), samples were quenched once, twice and three times. After quenching, the samples were polished and etched with Van Gieson solution. Based on our former investigations using Homology analysis, the Betti numbers of the prior austenite grains were observed. It was concluded that the Betti numbers of the grains were strongly correlated to the refined structure.

• Periodical: Advanced Materials Research (Volume 1082)
• Pages: 191-196
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1082.191
• Online since: December 2014
• Authors: Katsuyuki Kida*, Koshiro Mizobe, Ryosuke Arai, Kazuaki Nakane
• Keywords: Bearing Steel (JIS SUJ2), Homology Image Analysis, Prior Austenite Grain Size, Refinement, Repeated Quenching

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