CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Fatigue crack growth behaviour of forged Ti-6Al-4V in gaseous hydrogen

R. Gaddam ; R. Pederson ; Magnus Hörnqvist (Institutionen för teknisk fysik, Materialens mikrostruktur ) ; M.L. Antti
Corrosion Science (0010-938X). Vol. 78 (2014), p. 378-383.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: A. Titanium , B. SEM , C. Hydrogen embrittlement

Den här publikationen ingår i följande styrkeområden:

Läs mer om Chalmers styrkeområden  

Denna post skapades 2013-10-23. Senast ändrad 2015-06-12.
CPL Pubid: 185580


Läs direkt!

Länk till annan sajt (kan kräva inloggning)

Institutioner (Chalmers)

Institutionen för teknisk fysik, Materialens mikrostruktur (2012-2015)


Övrig teknisk mekanik
Teknisk fysik

Chalmers infrastruktur