Fracture of ledeburite and hypereutectoid high-speed steels

Fracture mechanisms are considered for high-speed steels of ledeburite (R6M5) and hypereutectoid (11M5F) classes. It is shown that formation of critical length cracks for hypereutectoid steels occurs as a result of not only elastic, but also significant plastic strain, and therefore work for crack g...

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Veröffentlicht in:	Metal science and heat treatment 2011-08, Vol.53 (5-6), p.280-284
Hauptverfasser:	Adaskin, A. M., Kremnev, L. S., Sapronov, I. Yu
Format:	Artikel
Sprache:	eng
Schlagworte:	Characterization and Evaluation of Materials Chemistry and Materials Science Classical Mechanics Engineering Thermodynamics Fracture mechanics Fracturing Heat and Mass Transfer Heat treatment High speed tool steels Materials Science Metallic Materials Plastic deformation Plastic strain Steels Strain
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Beschreibung
Zusammenfassung:	Fracture mechanisms are considered for high-speed steels of ledeburite (R6M5) and hypereutectoid (11M5F) classes. It is shown that formation of critical length cracks for hypereutectoid steels occurs as a result of not only elastic, but also significant plastic strain, and therefore work for crack generation is significantly greater for steel 11M5F than for R6M5. A relationship is established between strain and work for failure with static bending on one hand, and impact strength on the other.
ISSN:	0026-0673 1573-8973
DOI:	10.1007/s11041-011-9383-1