Details
| Original language | English |
|---|---|
| Pages (from-to) | 875-880 |
| Number of pages | 6 |
| Journal | Acta Metallurgica |
| Volume | 35 |
| Issue number | 4 |
| Publication status | Published - Apr 1987 |
| Externally published | Yes |
Abstract
During the investigation of hydrogen embrittlement of the low alloy high strength steel 90 MnV 8, a method was developed to evaluate the threshold hydrogen concentration for crack propagation. A fatigue precracked CT-specimen, stressed with constant load, was cathodically charged with hydrogen from the rear. Based on the numerical solution of the diffusion problem in a stress field, the critical hydrogen concentration was calculated from the incubation time of crack growth. Permeation experiments yielded data about the apparent diffusion coefficient and solubility of hydrogen. The computed critical concentrations are independent of the stress intensity factor and are, for various martensitic microstructures, in the range of 0.1-10 g atom/m3.
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In: Acta Metallurgica, Vol. 35, No. 4, 04.1987, p. 875-880.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A method to evaluate the critical hydrogen concentration for hydrogen-induced crack propagation
AU - Maier, H. J.
AU - Popp, W.
AU - Kaesche, H.
PY - 1987/4
Y1 - 1987/4
N2 - During the investigation of hydrogen embrittlement of the low alloy high strength steel 90 MnV 8, a method was developed to evaluate the threshold hydrogen concentration for crack propagation. A fatigue precracked CT-specimen, stressed with constant load, was cathodically charged with hydrogen from the rear. Based on the numerical solution of the diffusion problem in a stress field, the critical hydrogen concentration was calculated from the incubation time of crack growth. Permeation experiments yielded data about the apparent diffusion coefficient and solubility of hydrogen. The computed critical concentrations are independent of the stress intensity factor and are, for various martensitic microstructures, in the range of 0.1-10 g atom/m3.
AB - During the investigation of hydrogen embrittlement of the low alloy high strength steel 90 MnV 8, a method was developed to evaluate the threshold hydrogen concentration for crack propagation. A fatigue precracked CT-specimen, stressed with constant load, was cathodically charged with hydrogen from the rear. Based on the numerical solution of the diffusion problem in a stress field, the critical hydrogen concentration was calculated from the incubation time of crack growth. Permeation experiments yielded data about the apparent diffusion coefficient and solubility of hydrogen. The computed critical concentrations are independent of the stress intensity factor and are, for various martensitic microstructures, in the range of 0.1-10 g atom/m3.
UR - http://www.scopus.com/inward/record.url?scp=0023330359&partnerID=8YFLogxK
U2 - 10.1016/0001-6160(87)90164-7
DO - 10.1016/0001-6160(87)90164-7
M3 - Article
AN - SCOPUS:0023330359
VL - 35
SP - 875
EP - 880
JO - Acta Metallurgica
JF - Acta Metallurgica
SN - 0001-6160
IS - 4
ER -