Matches in SemOpenAlex for { <https://semopenalex.org/work/W2044925646> ?p ?o ?g. }
Showing items 1 to 90 of
90
with 100 items per page.
- W2044925646 endingPage "64" @default.
- W2044925646 startingPage "52" @default.
- W2044925646 abstract "The paper presents the results of research on the possibility of application of cobalt addition in concentration of up to 5% for the W-Mo-V and W-V high-speed steels of the 9-2-2, 11-2-2 and 11-0-2 types with economically designed chemical composition and the concentration of Si increased to about 1% of W reduced to 9–11% and concentration of Mo limited to about 2%. It was found out that cobalt in the concentration limited to about 5% results in increasing the secondary hardness effect by 1.6–1.9 HRC, depending on a grade of steel. The reason for the secondary hardness effect is the precipitation of dispersive carbides of the M4C3 type in the matrix of the tempered martensite and martensite transformation of the retained austenite, which occurs during cooling from tempering temperature. The maximum secondary hardness effect about 66.3–67.6 HRC, depending on a grade of steel, increases the hardness by about 2–4 HRC, compared with the hardness in the as-quenched state, and occurs in each steel after tempering at 540°C and austenitizing at 1240°C during 100 s. The higher hardness, which is the characteristic of cobalt steel, is also caused by strengthening the martensitic matrix by cobalt, tungsten and molybdenum in these steels, in which the mentioned elements are present. It was also proved that 5% cobalt addition decreases the primary austenitic grain size and reduces the volume fraction of the retained austenite after quenching and tempering. The 5% cobalt addition results in enhancing the working properties of tools, longer tool life and makes it possible to increase cutting speed by about 50%, compared with the steels of identical concentration of other alloying elements but without cobalt addition. In the investigated steels, however, cobalt does not have any significant influence on erosion resistance, which is independent of the steel hardness after quenching and tempering." @default.
- W2044925646 created "2016-06-24" @default.
- W2044925646 creator A5007578659 @default.
- W2044925646 creator A5015795899 @default.
- W2044925646 date "2001-02-01" @default.
- W2044925646 modified "2023-10-17" @default.
- W2044925646 title "The influence of 5% cobalt addition on structure and working properties of the 9-2-2-5, 11-2-2-5 and 11-0-2-5 high-speed steels" @default.
- W2044925646 cites W1976008708 @default.
- W2044925646 cites W2013412490 @default.
- W2044925646 cites W2023893715 @default.
- W2044925646 cites W2057703753 @default.
- W2044925646 cites W2062939337 @default.
- W2044925646 cites W2070555496 @default.
- W2044925646 cites W2072342502 @default.
- W2044925646 cites W2075255544 @default.
- W2044925646 cites W2075809599 @default.
- W2044925646 cites W2076314163 @default.
- W2044925646 cites W2090212458 @default.
- W2044925646 doi "https://doi.org/10.1016/s0924-0136(00)00775-5" @default.
- W2044925646 hasPublicationYear "2001" @default.
- W2044925646 type Work @default.
- W2044925646 sameAs 2044925646 @default.
- W2044925646 citedByCount "20" @default.
- W2044925646 countsByYear W20449256462012 @default.
- W2044925646 countsByYear W20449256462013 @default.
- W2044925646 countsByYear W20449256462017 @default.
- W2044925646 countsByYear W20449256462021 @default.
- W2044925646 countsByYear W20449256462023 @default.
- W2044925646 crossrefType "journal-article" @default.
- W2044925646 hasAuthorship W2044925646A5007578659 @default.
- W2044925646 hasAuthorship W2044925646A5015795899 @default.
- W2044925646 hasConcept C107054158 @default.
- W2044925646 hasConcept C121332964 @default.
- W2044925646 hasConcept C121745418 @default.
- W2044925646 hasConcept C153294291 @default.
- W2044925646 hasConcept C159985019 @default.
- W2044925646 hasConcept C18747287 @default.
- W2044925646 hasConcept C191897082 @default.
- W2044925646 hasConcept C192562407 @default.
- W2044925646 hasConcept C207948433 @default.
- W2044925646 hasConcept C2776111599 @default.
- W2044925646 hasConcept C515602321 @default.
- W2044925646 hasConcept C5335593 @default.
- W2044925646 hasConcept C542268612 @default.
- W2044925646 hasConcept C549387045 @default.
- W2044925646 hasConcept C62520636 @default.
- W2044925646 hasConcept C65590680 @default.
- W2044925646 hasConcept C87976508 @default.
- W2044925646 hasConcept C91881484 @default.
- W2044925646 hasConcept C96288455 @default.
- W2044925646 hasConceptScore W2044925646C107054158 @default.
- W2044925646 hasConceptScore W2044925646C121332964 @default.
- W2044925646 hasConceptScore W2044925646C121745418 @default.
- W2044925646 hasConceptScore W2044925646C153294291 @default.
- W2044925646 hasConceptScore W2044925646C159985019 @default.
- W2044925646 hasConceptScore W2044925646C18747287 @default.
- W2044925646 hasConceptScore W2044925646C191897082 @default.
- W2044925646 hasConceptScore W2044925646C192562407 @default.
- W2044925646 hasConceptScore W2044925646C207948433 @default.
- W2044925646 hasConceptScore W2044925646C2776111599 @default.
- W2044925646 hasConceptScore W2044925646C515602321 @default.
- W2044925646 hasConceptScore W2044925646C5335593 @default.
- W2044925646 hasConceptScore W2044925646C542268612 @default.
- W2044925646 hasConceptScore W2044925646C549387045 @default.
- W2044925646 hasConceptScore W2044925646C62520636 @default.
- W2044925646 hasConceptScore W2044925646C65590680 @default.
- W2044925646 hasConceptScore W2044925646C87976508 @default.
- W2044925646 hasConceptScore W2044925646C91881484 @default.
- W2044925646 hasConceptScore W2044925646C96288455 @default.
- W2044925646 hasIssue "1-2" @default.
- W2044925646 hasLocation W20449256461 @default.
- W2044925646 hasOpenAccess W2044925646 @default.
- W2044925646 hasPrimaryLocation W20449256461 @default.
- W2044925646 hasRelatedWork W2006933101 @default.
- W2044925646 hasRelatedWork W2013267665 @default.
- W2044925646 hasRelatedWork W2051406370 @default.
- W2044925646 hasRelatedWork W2059335270 @default.
- W2044925646 hasRelatedWork W2217204994 @default.
- W2044925646 hasRelatedWork W2357132215 @default.
- W2044925646 hasRelatedWork W2365415479 @default.
- W2044925646 hasRelatedWork W2390378041 @default.
- W2044925646 hasRelatedWork W4322626673 @default.
- W2044925646 hasRelatedWork W99059772 @default.
- W2044925646 hasVolume "109" @default.
- W2044925646 isParatext "false" @default.
- W2044925646 isRetracted "false" @default.
- W2044925646 magId "2044925646" @default.
- W2044925646 workType "article" @default.