Title of article
Creep–fatigue crack growth behaviour of a nickel-based powder metallurgy superalloy under high temperature
Author/Authors
Yang، نويسنده , , Hongqin and Bao، نويسنده , , Rui and Zhang، نويسنده , , Jianyu and Peng، نويسنده , , Lei and Fei، نويسنده , , Binjun، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2011
Pages
9
From page
1058
To page
1066
Abstract
Creep–fatigue crack growth behaviour of a nickel-based powder metallurgy superalloy has been investigated. Experiments were conducted at 750 °C with various dwell times. Results show that dwell time induced creep damage is significant by transforming a transgranular dominating cracking mode into a completely intergranular one. The observed dependence of crack growth rate on the dwell time and ΔK is complex indicating that the interaction between creep and fatigue is significant. Therefore, a factor reflecting the degree of the interaction was proposed to help modelling the creep–fatigue crack growth rates. The results are encouraging.
Keywords
creep–fatigue interaction , Dwell time , nickel based superalloys , Crack growth rate modelling
Journal title
Engineering Failure Analysis
Serial Year
2011
Journal title
Engineering Failure Analysis
Record number
2339309
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