Sustained-Load Crack-Growth in Inconel 718 Under Nonisothermal Conditions

Sustained-load crack-growth experiments were conducted under isothermal and nonisothermal conditions. Temperature cycling was conducted between 537° and 649°C. Hold times at minimum and/or maximum temperature were included in the temperature profiles. An analytical model was developed to predict cra...

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Bibliographic Details
Published in:Journal of engineering materials and technology 1985-04, Vol.107 (2), p.172-179
Main Authors: Haritos, G. K, Miller, D. L, Nicholas, T
Format: Article
Language:English
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Summary:Sustained-load crack-growth experiments were conducted under isothermal and nonisothermal conditions. Temperature cycling was conducted between 537° and 649°C. Hold times at minimum and/or maximum temperature were included in the temperature profiles. An analytical model was developed to predict crack-growth rates based solely on isothermal data. The linear cumulative damage model was able to predict crack-growth rates in Inconel 718 for all the temperature profiles investigated including a proof test.
ISSN:0094-4289
1528-8889
DOI:10.1115/1.3225795