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Metallurgical and Materials Transactions B

, Volume 3, Issue 11, pp 2943–2947 | Cite as

Stress history effect on incubation time for stress corrosion crack growth in AISI 4340 steel

  • D. L. Dull
  • L. Raymond
Mechanical Behaviour

Abstract

The effect of stress history on stress corrosion cracking of AISI 4340 steel in an aqueous environment has been studied with the use of double-cantilever beam specimens. The stress history effect was found to influence the incubation time period with changes in the stress intensity. When the stress intensity was decreased, the incubation time period was dependent on the △K and finalKf during stress corrosion testing. When the stress intensity was increased, the incubation time period was independent of the applied stress intensity. However, the stress history effect did not influence the steady-state crack growth rates. In this report, the stress history effect is explained by using the hydrogen embrittlement mechanism.

Keywords

Stress Intensity Crack Growth Rate Hydrogen Concentration Stress Corrosion Crack Opening Displacement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© The Metallurgical of Society of AIME 1972

Authors and Affiliations

  • D. L. Dull
    • 1
  • L. Raymond
    • 1
  1. 1.Metallurgy Department, Materials Sciences LaboratoryThe Aerospace Corp.El Segundo

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