Hydrogen-Assisted Fracture Mechanisms in Ultrafine-Grained CrNi Austenitic Stainless Steels with Different Initial Microstructures

Hydrogen-Assisted Fracture Mechanisms in Ultrafine-Grained CrNi Austenitic Stainless Steels with Different Initial Microstructures

We investigated the effect of electrolytic hydrogen-charging on regularities of plastic flow, strength and fracture mechanisms of AISI 316L and 321 austenitic stainless steels. In the steels, an ultrafine-grained structure of various morphologies was formed using methods of warm abc-pressing and the...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Materials science forum 2018-12, Vol.941, p.370-375
Hauptverfasser: Melnikov, Eugene V., Zakharov, Gennady, Astafurova, Elena G., Mishin, Ivan P., Maier, Galina G., Fortuna, Anastasiya, Astafurov, Sergey V., Moskvina, Valentina A., Ratochka, Il'ya V.
Format: Artikel
Sprache:eng
Schlagworte:
Austenitic stainless steels
Cold rolling
Cold treatment
Dislocation density
Elongation
Fracture mechanics
Hydrogen
Hydrogen charging
Hydrogen embrittlement
Morphology
Plastic flow
Stainless steel
Steel structures
Thermomechanical treatment
Ultrafines
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We investigated the effect of electrolytic hydrogen-charging on regularities of plastic flow, strength and fracture mechanisms of AISI 316L and 321 austenitic stainless steels. In the steels, an ultrafine-grained structure of various morphologies was formed using methods of warm abc-pressing and thermomechanical treatment (cold rolling and annealing). Hydrogen-charging of ultrafine-grained steels reduces their yield strength and elongation. The high dislocation density and low-angle boundaries inhibit the effects of hydrogen embrittlement in 316L and 321 steels.
ISSN:0255-5476
1662-9752
1662-9752
DOI:10.4028/www.scientific.net/MSF.941.370