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Hydrogen diffusivity, uptake and embrittlement of solution annealed and cold deformed austenitic stainless steel 1.4435 at hydrogen pressures up to 1000 bar and 200 °C.
- Source :
-
Corrosion Science . Jul2024, Vol. 235, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- Austenitic stainless steel 1.4435, a candidate material for high-pressure tubing for hydrogen applications, was investigated in two different stages of cold deformation (0 and 27 %) regarding its hydrogen embrittlement tendency. The determination of effective diffusion coefficients revealed slightly increased diffusion kinetics at 60°C for the cold-reduced material (8.0 · 10−15 m²/s) compared to the solution annealed one (5.0 · 10−15 m²/s). High-pressure gaseous hydrogen charging shows no differences regarding the degree of cold deformation with a maximum hydrogen concentration of 112 wt.-ppm. Furthermore, a significant ductility loss expressed by the ratio of the reduction of area was observed. • Cold drawn material shows enhanced diffusion kinetics than solution annealed state. • Hydrogen contents of up to 112 wt.-ppm are present after gaseous charging. • No failure occurred in constant load tests at 90 % of the yield strength. • SSRTs show no significant decrease in fracture elongation due to hydrogen charging. • 1.4435 is applicable for hydrogen tank systems within the tested conditions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0010938X
- Volume :
- 235
- Database :
- Academic Search Index
- Journal :
- Corrosion Science
- Publication Type :
- Academic Journal
- Accession number :
- 178148363
- Full Text :
- https://doi.org/10.1016/j.corsci.2024.112219