Non-destructive prediction method of creep damage and remnant life related to those under creep–fatigue interactive conditions for nickel base superalloys. (May 2015)

• Record Type: Journal Article
• Authors: Ando, A.; Toshimitsu Yokobori, A.; Sugiura, R.; Ohmi, T.; Ozeki, G.; Matsubara, T.
• Is Part Of: Materials at high temperatures. Volume 32:Number 3(2015)
• Page Start: 266
• Page End: 275
• Publication Date: 2015-05
• Subjects: Materials at high temperatures -- Periodicals; High temperatures -- Periodicals; 620.1121705
• DOI: 10.1179/0960340914Z.00000000067
• Languages: English
• ISSNs: 0960-3409

Abstract

<abstract> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p>In order to clarify the microdamage formation behaviour for high temperature brittle IN100 alloy, a polycrystalline nickel base superalloy, <italic>in situ</italic> observational test was carried out to observe creep damage formation behaviour of a notched IN100 specimen. Furthermore, the experimental findings of creep damage formation were evaluated by an original elastic–plastic creep finite element analysis. As a result, microcracks and damage forming areas were found to develop in the creep damage areas suggested by this analysis. This has resulted in the development of a non-destructive prediction method for creep damage accumulation and material's remnant life. The application of this method to the cases under creep–fatigue conditions was addressed.</p> </abstract>