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Strength changes of 40 Cr steel subjected to cyclic torsion below the fatigue limit

  • Youshuo Song and Xi Lu
Published/Copyright: November 2, 2018
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Materials Testing
From the journal Materials Testing Volume 60 Issue 11

Abstract

This paper investigates the fatigue and static strength variation of 40 Cr steel which has been subjected to cyclic torsion below the fatigue limit. The experimental results show that an improvement in fatigue strength can be exhibited if low-amplitude cyclic torsion and loading cycles are properly selected. The static strength can also be strengthened through the improvement of fatigue strength. It should be added that there is no significant static strength change in the first 50 % of the fatigue damaging process.

Kurzfassung

Für den vorliegenden Beitrag wurde die Veränderung der Festigkeit eines 40 Cr Stahles unter statischer und Ermüdungsbeanspruchung untersucht, wobei der Werkstoff zyklisch unter Torsion unterhalb der Ermüdungsgrenze beansprucht wurde. Die experimentellen Ergebnisse zeigen, dass sich offensichtlich eine Verbesserung der Ermüdungsfestigkeit einstellt, wenn die zyklische Torsionsbeanspruchung bei niedrigen Amplituden und die Beanspruchungszyklen richtig gewählt werden. Die statische Festigkeit kann mit der Verbesserung der Ermüdungsfestigkeit ebenfalls erhöht werden. Darüber hinaus stellt sich keine signifikante Veränderung der statischen Festigkeit in den ersten 50 % des gesamten Ermüdungsschädigungsprozesses ein.

*Correspondence Address, Prof. Dr. Xi Lu, Department of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China, E-mail:

Dr. Youshuo Song, born in 1987, holds a doctorate degree in Engineering and graduated from Zhejiang University in Hangzhou, China in 2014. He works as a lecturer at the University of Shanghai for Science and Technology, China.

Prof. Dr. Xi Lu, born in 1961, holds a doctorate degree in Engineering. He works as a professor in the Department of Mechanical Engineering, University of Shanghai for Science and Technology, China.

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Published Online: 2018-11-02
Published in Print: 2018-11-15

© 2018, Carl Hanser Verlag, München

Articles in the same Issue

  1. Inhalt/Contents
  2. Contents
  3. Fachbeiträge/Technical Contributions
  4. Bending deformation and indentation hardness of electrochemically deposited nanocrystalline nickel-iron alloys
  5. Al-Si piston alloy behavior under combined mechanical and thermal cyclic loading with superimposed high-frequency thermal cycling
  6. Porosity of LMD manufactured parts analyzed by Archimedes method and CT
  7. Structure and mechanical properties of ADC 12 Al foam-polymer interpenetrating phase composites with epoxy resin or silicone
  8. Strength changes of 40 Cr steel subjected to cyclic torsion below the fatigue limit
  9. Auxetic aluminum sheets in lightweight structures
  10. Effect of thickness on the fracture toughness of high strength steel for gas well casings
  11. Effect of laser welding speed on the weld quality of a 5A06 aluminum alloy
  12. Correlation of ultrasound velocity with physico-mechanical properties of Jodhpur sandstone
  13. Etching behavior of ZnO:Ga thin films
  14. Repair of an aluminum plate with an elliptical hole using a composite patch
  15. Impression creep behavior of extruded ZK60 and ZK60+1 %Y magnesium alloys
  16. Experimental study for the bearing capacity calculation of concrete expanded plates in squeezed branch piles
  17. Mechanical properties and microstructure of autoclaved green UHPC blended with granite stone powders
  18. Mechanical properties and microstructure of glass carbon hybrid composites
https://doi.org/10.3139/120.111249

Articles in the same Issue

  1. Inhalt/Contents
  2. Contents
  3. Fachbeiträge/Technical Contributions
  4. Bending deformation and indentation hardness of electrochemically deposited nanocrystalline nickel-iron alloys
  5. Al-Si piston alloy behavior under combined mechanical and thermal cyclic loading with superimposed high-frequency thermal cycling
  6. Porosity of LMD manufactured parts analyzed by Archimedes method and CT
  7. Structure and mechanical properties of ADC 12 Al foam-polymer interpenetrating phase composites with epoxy resin or silicone
  8. Strength changes of 40 Cr steel subjected to cyclic torsion below the fatigue limit
  9. Auxetic aluminum sheets in lightweight structures
  10. Effect of thickness on the fracture toughness of high strength steel for gas well casings
  11. Effect of laser welding speed on the weld quality of a 5A06 aluminum alloy
  12. Correlation of ultrasound velocity with physico-mechanical properties of Jodhpur sandstone
  13. Etching behavior of ZnO:Ga thin films
  14. Repair of an aluminum plate with an elliptical hole using a composite patch
  15. Impression creep behavior of extruded ZK60 and ZK60+1 %Y magnesium alloys
  16. Experimental study for the bearing capacity calculation of concrete expanded plates in squeezed branch piles
  17. Mechanical properties and microstructure of autoclaved green UHPC blended with granite stone powders
  18. Mechanical properties and microstructure of glass carbon hybrid composites
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