Influence of Thrice-Induction-Heating and Once-Quenching on Fatigue Strength of SAE52100 Steel

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Abstract:

Martensitic high-carbon high-strength SAE 52100 bearing steel is one of the main alloys used as the principal alloys for rolling contact applications. We developed a novel repeated quenching method by induction heating in order to enhance the materials strength. The steel bar passed through the heated coil several times and finally quenched by cooling water. The rotating bending fatigue tests was done in order to investigate the fatigue strength of the steel bars. The heat affected zone (HAZ) was not expanded by the heat treatment however it was found that the thrice-induction-heating and once-quenching improved the fatigue strength. These two features indicated that the size of heat affected zone does not dominate the strength of heated-samples.

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415-418

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February 2014

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