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Gigacycle Fatigue Endurance Strength of High Density Mo and Cr-Mo Prealloyed Sintered Steel

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  • URLhttps://db.koreascholar.com/Article/Detail/4120
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한국분말재료학회(구 한국분말야금학회) (Korean Powder Metallurgy Institute)
초록

For attaining optimum fatigue resistance of PM steels, high density levels are necessary. In this work, sintered steels Fe-1.5%Mo-0.6%C and Fe-1.5%Cr-0.2%Mo-0.6%C were produced with density levels of 7.1 to . Ultrasonic fatigue testing with 20 kHz was performed in push-pull mode up to 10E9 cycles. It was shown that the fatigue endurance strength is strongly improved by higher density levels, but also higher sintering temperatures are beneficial. The Cr-Mo steels proved to be superior to the plain Mo alloyed, due to a more favourable as-sintered matrix microstructure.

저자
  • Xu
  • Chen
  • Danninger
  • Herbert
  • Khatibi
  • Golta
  • Weiss
  • Brigitte