Anzeige
Erschienen in:
01.12.2021 | STRENGTH AND PLASTICITY
Effect of Gadolinium Addition on Microstructure, Mechanical Properties and Corrosion Resistance of 316L Austenitic Stainless Steels
Erschienen in: Physics of Metals and Metallography | Ausgabe 14/2021
EinloggenAktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
316L austenitic stainless steels containing 0.2–2.0 wt % gadolinium (Gd) were prepared through vacuum arc melting and subsequent hot rolling. Submicron and micron-sized Gd-rich phases precipitate along the grain boundaries and inside the grains in the as-cast samples. After hot rolling, the Gd-rich phases of an average size below 3 μm are homogeneously distributed when the Gd content is less than 1.5 wt %. When the Gd content increases to 2.0 wt %, some of the Gd-rich particles coarsen to about 6 μm and tend to aggregate. The hardness monotonously improves from 387 to 442 HV with increasing the Gd content from 0.2 to 2.0 wt % in the hot-rolled samples. The maximum yield strength and tensile strength, 635 and 741 MPa, respectively, were found in the hot-rolled 0.5 wt % Gd sample, which exhibits the optimum corrosion resistance as well.