| Issue |
J. Phys. Colloques
Volume 46, Number C10, Décembre 1985
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
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|---|---|---|
| Page(s) | C10-139 - C10-142 | |
| DOI | https://doi.org/10.1051/jphyscol:19851032 | |
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 46 (1985) C10-139-C10-142
DOI: 10.1051/jphyscol:19851032
University of Denver, Department of Physics, Denver, Colorado 80208, U.S.A.
J. Phys. Colloques 46 (1985) C10-139-C10-142
DOI: 10.1051/jphyscol:19851032
HYDROGEN-INDUCED CRACKING IN PURE IRON
J.H. ARMSTRONG and S.H. CARPENTERUniversity of Denver, Department of Physics, Denver, Colorado 80208, U.S.A.
Abstract
The modulus and internal friction of Armco iron were continuously measured during cathodic charging with hydrogen to investigate crack initiation and growth. The observed modulus decrease was attributed to crack initiation and growth. The internal friction increase during cathodic charging ras attributed to plastic deformation accompanying the crack formation. Both the modulus and internal friction behavior were found to be a sum of two parallel exponential processes. The two exponential processes were consistent with different sources of carbon for the crack-producing hydrogen bubble nucleation.