In this paper, the attention is focused on the mechanical fatigue behavior of high strength steels subjected to hydrogen embrittlement. These steels are widely used in pipeline applications: in this light, it is important to have analytical models predicting crack growth rates, for estimating residual fatigue life of the component. An analytical model is here described and used to fit experimental data, described in a parallel paper at this conference. Parameters used in the model are: hydrogen absence/presence, frequency and temperature. Once the model is validated, it is used to estimate residual fatigue life of the components, as test case. Comments are proposed about the influence, on crack growth rates, of hydrogen embrittlement combined with other considered factors.

A MODEL TO PREDICT THE HYDROGEN EFFECT ON CRACK GROWTH RATE IN HIGH-STRENGTH STEELS

VERGANI, LAURA MARIA;SCIUCCATI, AUGUSTO;COLOMBO, CHIARA
2014-01-01

Abstract

In this paper, the attention is focused on the mechanical fatigue behavior of high strength steels subjected to hydrogen embrittlement. These steels are widely used in pipeline applications: in this light, it is important to have analytical models predicting crack growth rates, for estimating residual fatigue life of the component. An analytical model is here described and used to fit experimental data, described in a parallel paper at this conference. Parameters used in the model are: hydrogen absence/presence, frequency and temperature. Once the model is validated, it is used to estimate residual fatigue life of the components, as test case. Comments are proposed about the influence, on crack growth rates, of hydrogen embrittlement combined with other considered factors.
2014
International Hydrogen Conference (IHC 2012): Hydrogen-Materials Interactions
9780791860298
File in questo prodotto:
File Dimensione Formato  
339.pdf

Accesso riservato

: Post-Print (DRAFT o Author’s Accepted Manuscript-AAM)
Dimensione 1.12 MB
Formato Adobe PDF
1.12 MB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/890156
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact