Effect of matrix toughness and grain morphology on fracture of steels

Effect of matrix toughness and grain morphology on fracture of steels

The microstructure and fracture surfaces of steel X42 (type 09G2S) and of an experimental bainitic steel (0.23% C, 0.18% Mn, 0.04% Ni, 2.35% Co, 1.40% Cr, 0.50% Mo, 0.08% Nb, 0.08%V, 0.02% Ti) are studied after quenching and tempering. The influence of the toughness of the matrix on the fracture beh...

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Veröffentlicht in:Metal science and heat treatment 2013-03, Vol.54 (11-12), p.648-653
Hauptverfasser: Atapek, S.H, Gumus, S, Polat, S
Format: Artikel
Sprache:eng
Schlagworte:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Chromium
Classical Mechanics
Engineering Thermodynamics
Fracture mechanics
Fracture toughness
Heat and Mass Transfer
Materials Science
Metallic Materials
Morphology
Nickel
Nucleation
Structural steels
Titanium
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Zusammenfassung:The microstructure and fracture surfaces of steel X42 (type 09G2S) and of an experimental bainitic steel (0.23% C, 0.18% Mn, 0.04% Ni, 2.35% Co, 1.40% Cr, 0.50% Mo, 0.08% Nb, 0.08%V, 0.02% Ti) are studied after quenching and tempering. The influence of the toughness of the matrix on the fracture behavior of the steels is determined. It is shown that the fracture toughness changes depending on the tempering temperature, and the nucleation and propagation of cracks depends on the presence of secondary phases and on the morphology of the grain structure.
ISSN:0026-0673
1573-8973
DOI:10.1007/s11041-013-9565-0