Impact-fatigue strength of carburized parts in relation to the composition of the core
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The effect of core properties on the impact-fatigue resistance of carburized samples differs in relation to the design of the sample (with or without a stress concentrator) and the stress level.
For samples (machine parts) without a stress concentrator an increase of core hardness leads to an increase of resistance to impact-cyclic loads at low stress levels. At high stresses there is almost no difference in the impact-fatigue resistance.
With a stress concentrator the impact-fatigue strength is high only with high ductility of the core.
KeywordsDuctility Stress Level High Stress Core Hardness Stress Concentrator
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