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Effects of static strain aging on residual stress stability and alternating bending strength of shot peened AISI 4140

  • Rainer Menig , Volker Schulze EMAIL logo and Otmar Vöhringer
Published/Copyright: January 3, 2022
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 93 Issue 7

Abstract

Increases of residual stress stability and alternating bending strength of shot peened AISI 4140 are obtained by successive annealing treatments. This is caused by static strain aging effects, which lead to pinning of dislocations by carbon atoms and very small carbides. It will be shown that by well directed annealing of a quenched and tempered AISI 4140 it is possible to maximize the positive effects of static strain aging, without causing extended thermal residual stress relaxation. The amount of yield stress increases caused by static strain aging is quantified using tensile tests. Static strain aging is also found to be responsible for an increase of the quasi static and cyclic surface yield strength present after shot peening.

Abstract

Steigerungen der Eigenspannungsstabilität und der Wechselfestigkeit des kugelgestrahlten Stahles 42 CrMo 4 sind durch nachträgliche Auslagerungsbehandlungen möglich. Grund sind statische Reckalterungseffekte, die zu einer Verankerung der Versetzungsstruktur durch Kohlenstoffatome und feinste Karbide führen. Es wird gezeigt, dass es möglich ist, durch gezielte Auslagerung eines kugelgestrahlten vergüteten Stahles 42 CrMo 4 die positiven Effekte der statischen Reckalterung zu maximieren, ohne dabei einen zu großen thermischen Eigenspannungsabbau zu verursachen. Die durch statische Reckalterung hervorgerufenen Streckgrenzenerhöhungen werden mit Hilfe von Zugversuchen quantifiziert. Statische Reckalterung führt darüber hinaus zu einem Anstieg der nach der Kugelstrahlbehandlung vorliegenden quasistatischen und zyklischen Oberflächenstreckgrenze.

Keywords: Strain aging; AISI 4140; Shot peening; Short-time annealing; Residual stress stability; Alternating bending strength
Dr.-Ing. Volker Schulze Institut für Werkstoffkunde I, Universität Karlsruhe (TH) Kaiserstr. 12, D-76131 Karlsruhe, Germany Tel.: +49 721 608 2219 Fax: +49 721 608 8044

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Received: 2002-02-18
Published Online: 2022-01-03

© 2002 Carl Hanser Verlag, München

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  2. Editorial
  3. Editorial
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  17. A mesoscopic plasticity model accounting for spatial fluctuations of plastic strains, internal stresses and dislocation densities
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  19. Dislocation structure and crystallite size distribution in hexagonal nanomaterials from X-ray peak profile analysis
  20. Werden gewichtsoptimiert konstruierte Bauteile durch die Verwendung von Leichtmetallen wirklich leichter?*)
  21. Strain-induced martensite formation in metastable austenitic steels with varying carbon content
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  23. Fatigue damage evolution in a particulate-reinforced metal matrix composite determined by acoustic emission and compliance method
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  27. On localised corrosive attack, stress corrosion cracking and corrosion fatigue effects in a hardmetal cutting-tool material
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  29. Notifications/Mitteilungen
  30. Personal/Personelles
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  32. DGM Conferences/Training
https://doi.org/10.3139/ijmr-2002-0108
Keywords for this article
Strain aging; AISI 4140; Shot peening; Short-time annealing; Residual stress stability; Alternating bending strength

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Editorial
  4. Articles/Aufsätze
  5. A model for the work hardening of WC–Co “hard metals”
  6. On the dispersion strengthening mechanisms in ODS materials
  7. Effect of hydrogen on the mechanical properties of the β titanium alloy Timetal® 21S
  8. Cyclic deformation behaviour of (α + β) titanium alloys under complex mechanical and physiological loading conditions
  9. Assessment of the influence of interdendritic shrinkage cavities on the thermo-mechanical fatigue behaviour of the nickel-base superalloy MAR-M247LC
  10. Effects of static strain aging on residual stress stability and alternating bending strength of shot peened AISI 4140
  11. On the possibilities to enhance the fatigue properties of ultrafine-grained metals
  12. New method of determining stress relaxation behavior in creep machines by controlled unloading
  13. Creep of binary Ni-rich NiTi shape memory alloys and the influence of pre-creep on martensitic transformations
  14. Interaction of high-cycle fatigue with high-temperature creep in superalloy single crystals
  15. A unified description of creep in pure and dispersion-strengthened copper
  16. A new interpretation of flow-stress measurements of high-purity NiAl below room temperature
  17. A mesoscopic plasticity model accounting for spatial fluctuations of plastic strains, internal stresses and dislocation densities
  18. Behavior of X-ray peak widths in the Wilkens model of a restrictedly random distribution of dislocations
  19. Dislocation structure and crystallite size distribution in hexagonal nanomaterials from X-ray peak profile analysis
  20. Werden gewichtsoptimiert konstruierte Bauteile durch die Verwendung von Leichtmetallen wirklich leichter?*)
  21. Strain-induced martensite formation in metastable austenitic steels with varying carbon content
  22. Isothermal bainitic transformation in low alloy steels: factors limiting prediction of the resulting material’s properties
  23. Fatigue damage evolution in a particulate-reinforced metal matrix composite determined by acoustic emission and compliance method
  24. Microstructure and modification mechanisms of Si phase in as-thixoformed alloy A356
  25. Influence of size effect on microstructural changes in cyclically deformed polycrystalline nickel
  26. Self-diffusion of 71Ge and 31Si in Si –Ge alloys
  27. On localised corrosive attack, stress corrosion cracking and corrosion fatigue effects in a hardmetal cutting-tool material
  28. The internal stress during growth of SiC single crystals
  29. Notifications/Mitteilungen
  30. Personal/Personelles
  31. Books/Bücher
  32. DGM Conferences/Training
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