Prediction of maximum casting defect size in MAR-M-247 alloy processed by hot isostatic pressing
Journal Title: Materials Engineering - Materialove inzinierstvo (MEMI) - Year 2015, Vol 22, Issue 1
Abstract
Nickel based MAR-M-247 superalloy treated by hot isostatic pressing was investigated with the aim to identify the influence of casting defect size on fatigue life. Two testing temperatures of 650 and 800°C and one stress amplitude were chosen for fatigue tests. The Murakami approach and the largest extreme value distribution theory were applied. It has been found that the maximum size of casting defects in a specimen can be satisfactorily predicted. Fatigue life of specimens was in the good agreement with assumptions based on the evaluation and prediction of the casting defect size.
Authors and Affiliations
Miroslav Smid, Stanislava Fintova, Ludvik Kunz, Pavel Hutar, Karel Hrbacek
Keywords
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