0
Chapter 75
Hydrogen Embrittlement of AlZnMg Alloys: Experiments and Simulations

Excerpt

An experimental and numerical study of hydrogen effects on the failure of AlZnMg alloys is presented. The material is pre-charged in H and notched samples are loaded at a various strain rates. For the lowest strain rate, brittle intergranular failure is observed. H-effects diminish with increasing strain rate. Beyond a critical strain rate, H-embrittlement is no longer operating and ductile failure is observed. Calculations are carried out to investigate the distribution of H during crack propagation. For low strain rates, the equilibrium distribution of H is always observed. A critical crack propagation rate is evidenced for which the concentration of H around the moving crack decreases. Thus, H is no longer sufficient to assist failure and another failure mechanism can come up.

  • Introduction
  • Experimental Setup
  • Experimental Results
  • Simulation Methodology
  • Hydrogen Distribution around a Moving Crack Tip
  • Conclusions
  • Acknowledgements
  • References

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In