caa a22 4500 467946272 CHVBK 20180322200725.0 cr unu---uuuuu 170328e19861101xx s 000 0 eng 10.1007/BF02431612 doi (NATIONALLICENCE)springer-10.1007/BF02431612 (NATIONALLICENCE)springer-10.1007/BF00553429 Hydrogen-induced cracking in two linepipe steels [Elektronische Daten] [K. Chawla, J. Rigsbee, J. Woodhouse] Linepipe steels are susceptible to hydrogen-induced cracking (HIC) in wet, sour gas environments. Two commercially produced linepipe steels were investigated with regard to HIC on cathodic charging. Both steels, B and C, showed a high banded microstructure consisting of alternative layers of polygonal ferrite and a mixture of non-ferritic constituents (pearlite, bainite, and martensite-austenite). The degree of banding was higher in Steel B than in Steel C. Also present were elongated inclusions in Steel B, while in Steel C they were more or less equiaxed. On cathodically hydrogen-charging in the absence of external stress, microvoids formed at low current densities at or around inclusions. On prolonged charging, these voids grew and propagated parallel to the bands, running along the interface between ferrite/non-ferrite constituents, along inclusions lodged in the non-ferritic consitituents, and at places through the non-ferritic constituents. Steel B, not unexpectedly, showed more severe permanent microstructural damage than Steel C, leading to the conclusion that a high banded structure and/or the presence of elongated inclusions is deleterious to resistance against HIC. Chapman and Hall Ltd., 1986 Chawla K. Department of Metallurgy and Mining Engineering, University of Illinois at Urbana-Champaign, 1304 W. Green, 61801, Urbana, Illinois, USA aut Rigsbee J. Department of Metallurgy and Mining Engineering, University of Illinois at Urbana-Champaign, 1304 W. Green, 61801, Urbana, Illinois, USA aut Woodhouse J. Materials Research Laboratory, University of Illinois at Urbana-Champaign, 104 S. Goodwin, 61801, Urbana, Illinois, USA aut Journal of Materials Science Kluwer Academic Publishers 21/11(1986-11-01), 3777-3782 0022-2461 21:11<3777 1986 21 10853 https://doi.org/10.1007/BF02431612 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02431612 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chawla K. Department of Metallurgy and Mining Engineering, University of Illinois at Urbana-Champaign, 1304 W. Green, 61801, Urbana, Illinois, USA aut NATIONALLICENCE 700 1- Rigsbee J. Department of Metallurgy and Mining Engineering, University of Illinois at Urbana-Champaign, 1304 W. Green, 61801, Urbana, Illinois, USA aut NATIONALLICENCE 700 1- Woodhouse J. Materials Research Laboratory, University of Illinois at Urbana-Champaign, 104 S. Goodwin, 61801, Urbana, Illinois, USA aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers 21/11(1986-11-01), 3777-3782 0022-2461 21:11<3777 1986 21 10853 NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00553429 text/html Onlinezugriff via DOI Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer