Impact of surface and volume modification of nickel superalloys IN-713C and MAR-247 on high temperature creep resistance

• Autorzy: Cieśla M. , Binczyk F. , Mańka M.
• Języki publikacji: EN

Abstrakty

EN

Impact of surface and volume modification and double filtration during pouring the moulds on basic mechanical properties and creep resistance of nickel superalloys IN-713C and MAR-247 in conditions of accelerated creep of castings made of post-production scrap of these alloys is evaluated in this paper. The conditions of initiation and propagation of cracks in the specimens were analysed with consideration of stereological properties of material macro- and microstructure. It has been proven that in the conditions of high-temperature creep at 980 C and at stress [...] = 150 MPa, creep resistance of superalloy MAR-247 is more than 10 times higher than the creep resistance of IN-713C alloy. In case of IN-713C alloy, the creep resistance negligibly depends on macrograin sizes. But, the macrograin size considerably affects the time to failure of specimens made of alloy MAR-247. Creep resistance of specimens made of coarse grain material was 20% higher than the resistance of fine grain materials.

Słowa kluczowe

EN

nickel superalloy; macrostructure; modification; mechanical properties; creep

PL

nadstop niklu; makrostruktura; właściwości mechaniczne; pełzanie

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2012
• Tom: Vol. 12, iss. 4
• Strony: 17--24
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr.

Twórcy

autor

Cieśla M.

autor

Binczyk F.

autor

Mańka M.

• Chair of Materials Technology, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice, Poland,

Bibliografia

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