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- Title
New Steels for Agricultural Machine Building.
- Authors
Ryabov, V.; Khlusova, E.; Golosienko, S.; Motovilina, G.
- Abstract
Chemical composition is developed for new high-strength wear-resistant steels with guaranteed yield strength of 1200, 1500, and 1700 MPa. Phase transformations, microstructure, and mechanical properties are studied after steel quenching and low-temperature tempering. It is shown that fine carbides 7-43 nm in size with a volumetric density of 13·10 m, formed in lath martensite with lath width of 100-200 nm and dislocation density of (4-5)·10 m after tempering at 200-300°C, provide the required combination of strength characteristics and toughness. Formation of grain boundary cementite and that between laths, caused by breakdown of residual austenite, has an embrittling effect.
- Subjects
STEEL quenching; WEAR resistance; AGRICULTURAL equipment industry; YIELD strength (Engineering); CHEMICALS; MARTENSITE; PHASE transitions
- Publication
Metallurgist, 2015, Vol 59, Issue 5/6, p505
- ISSN
0026-0894
- Publication type
Article
- DOI
10.1007/s11015-015-0132-3