Creep strengthening of Ni3(Al, Si) intermetallic alloy by ductile precipitates

Autor:	J.-P. Dallas, M. Cornet, R. Merabtine
Rok vydání:	2005
Předmět:	Materials science Mechanical Engineering Alloy Metallurgy Metals and Alloys Intermetallic General Chemistry Activation energy engineering.material Flow stress Superalloy Stress (mechanics) Creep Mechanics of Materials Phase (matter) Materials Chemistry engineering
Zdroj:	Intermetallics. 13:179-186
ISSN:	0966-9795
DOI:	10.1016/j.intermet.2004.07.041
Popis:	Several methods were used to obtain the proper chemical composition and to determine the useful heat treatment to study the possible improvement of creep behaviour by fine precipitates of γ phase (disordered and ductile) in Ni 3 Al alloy (ordered γ′ phase), which is an inverted structure with respect to that of superalloys. In the present work, compression creep tests were performed on the Ni 78 Al 11 Si 11 alloy (in at.%) at temperatures and stresses near that of the flow stress peak observed at about 550 °C. The stress exponent and activation energy of creep were determined. First observations of the microscopic creep behaviour were made after a low strain by transmission electron microscopy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5b58136a9007ecb752e0924317851d89 https://doi.org/10.1016/j.intermet.2004.07.041 Zobrazit plný text záznamu Full Text from ScienceDirect