Microporosity; superalloys; solidification parameters; Thus; aluminum; titanium and cobalt; LiMaRC - Liège Materials Research Center
Abstract :
[en] Microporosity formation in nickel-base superalloys is studied experimentally and theoretically. A microporosity index, ΔP*, which depends on solidification parameters and alloy properties has been deduced. This index can be determined from parameters obtained by quantitative differential thermal analysis. The effect of mean alloying elements on the formation of microporosity is evaluated. Thus, aluminum, titanium and cobalt are found to increase and chromium to decrease microporosity. The effect of carbon depends on aluminum content and can be beneficial or detrimental.
Disciplines :
Materials science & engineering
Author, co-author :
Lecomte-Beckers, Jacqueline ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Language :
English
Title :
Relation between chemistry, solidification behaviour, microstructure and microporosity in nickel-base superalloys
Publication date :
1988
Event name :
6th International Symposium on Superalloys
Event organizer :
Metallurgical Society
Event place :
Seven Springs, Pennsylvania, United States
Audience :
International
Main work title :
Proceedings of 6th International Symposium on Superalloys
