Homology Analysis of Prior Austenite Grain Size of SAE52100 Bearing Steel Processed by Cyclic Heat Treatment

Abstract:

Here, we introduce the mathematical methods to quantitatively evaluate the change of the tissue to quenching. SAE 52100 sample was repeatedly quenched and the influence of this cyclic heat treatment was investigated. The repeated quenching process increased the retained austenite content and had little influence on the materials hardness. The prior austenite grain size was decreased and consequently, refinement of the martensitic phase in the material occurred. The higher content of the retained austenite (higher fracture toughness) and the refinement of the microstructure accounted for the higher fatigue properties of the repeatedly quenched material. Here we use mathematical homology to quantify these features.

• Periodical: Advanced Materials Research (Volume 813)
• Pages: 116-119
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.813.116
• Online since: September 2013
• Authors: Nakane Kazuaki, Katsuyuki Kida, Koshiro Mizobe
• Keywords: Homology, Repeated Quenching, SAE 52100

References

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[2] CHomP (Computational Homology Project), http: /chomp. rutgers. edu.

[3] NAKANE, K., TSUCHIHASHI, Y. and MATSUURA, N., A Simple Mathematical Model Utilizing a Topological Invariant for Automatic Detection of Tumor Areas in Digital Tissue Images, to appear Diagnostic Pathology.

DOI: 10.1186/1746-1596-8-s1-s27