Performance of sialon cutting tools when machining nickel-base aerospace alloys

Autor:	J. Aucote, S. R. Foster
Rok vydání:	1986
Předmět:	Sialon Materials science Mechanical Engineering Alloy Metallurgy chemistry.chemical_element engineering.material Condensed Matter Physics Grain size Machining chemistry Mechanics of Materials Aluminium engineering General Materials Science Tool wear Dissolution Incoloy
Zdroj:	Materials Science and Technology. 2:700-708
ISSN:	1743-2847 0267-0836
DOI:	10.1179/mst.1986.2.7.700
Popis:	A range of sialon compositions have been used to machine the nickel-base alloy Incoloy 901. Wear measurements, taken throughout the machining tests, have shown that tool life and flank wear resistance increase with α-sialon content. An examination of the wear mechanisms involved suggests that this can be ascribed to the increased resistance to dissolution into the work piece, afforded by the higher aluminium and oxygen levels in α-sialon compared with those in β–sialon. At higher cutting speeds one of the main mechanisms of tool wear was rake face flaking, and resistance to this mechanism was found to increase with tool material grain size. A model has been proposed for the initiation and propagation of the cracks which produce this type of failure. At lower cutting speeds depth-of-cut notch wear was of major importance, and resistance to this mechanism was found to decrease with increasing grain size.MST/249
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::64edad245a0f6cd27174cb9e4b083f50 https://doi.org/10.1179/mst.1986.2.7.700 Zobrazit plný text záznamu