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- W2249953265 abstract "Hardmetals, manufactured from powders by pressing and sintering, are the most important tool materials in service today. In many applications, such as milling or percussion drilling, they are subjected to fatigue with considerable loading cycle numbers. In the present study, the fatigue behaviour of hardmetals in push-pull loading was investigated up to N max = 10 10 using ultrasonic resonance fatigue testing. It showed that with all hardmetal grades investigated there is no fatigue “limit”, i.e. a horizontal branch of the S-N curve, but a consistent drop of the curve up to maximum N. Crack initiation was found to occur predominantly microstructure-controlled, as compared to defect controlled as typical for powder metallurgy tool steels.Keywords: gigacycle fatigue, WC-Co hardmetals, ultrasonic fatigue testing, fatigue limit" @default.
- W2249953265 created "2016-06-24" @default.
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- W2249953265 date "2015-07-01" @default.
- W2249953265 modified "2023-09-27" @default.
- W2249953265 title "Gigacycle Fatigue Behaviour of Sintered WC-Co Hardmetals Investigated by Ultrasonic Resonance Testing" @default.
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- W2249953265 doi "https://doi.org/10.4028/www.scientific.net/msf.825-826.1016" @default.
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