Fatigue crack growth behaviour of forged Ti-6Al-4V in gaseous hydrogen
Journal article, 2014

Fatigue crack growth (FCG) tests were performed to evaluate the fatigue behaviour of forged Ti-6A1-4V in air and high-pressure gaseous hydrogen (15 MPa) at room temperature. The results indicate that the effect of gaseous hydrogen is dependent on the stress intensity factor (ΔK). The FCG rate was unaffected by hydrogen below a critical stress intensity, ΔK * ≈ 20 MPa√m. Above ΔK *, the FCG rate fluctuated and subsequently accelerated at higher ΔK values. The observed behaviour is attributed to the change in the fracture processes. A hypothesis is proposed that describes the FCG behaviour in gaseous hydrogen. © 2013 Elsevier Ltd. All rights reserved.

B. SEM

A. Titanium

C. Hydrogen embrittlement

Author

R. Gaddam

R. Pederson

Magnus Hörnqvist

Chalmers, Applied Physics, Materials Microstructure

M.L. Antti

Corrosion Science

0010-938X (ISSN)

Vol. 78 378-383

Subject Categories

Other Engineering and Technologies

Other Materials Engineering

Areas of Advance

Materials Science

DOI

10.1016/j.corsci.2013.08.009

More information

Latest update

10/15/2018