발간논문

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Vol.34, No.9, 1132 ~ 1138, 1996
Title
Research Paper - Mechanical Behavior - : The Low Cycle Fatigue Life Evaluation of Mar - M247LC
최병학Byung Hak Choe, 이후철Hu Chul Lee
Abstract
The low cycle fatigue (LCF) life prediction model for directionally solidified(DS) Mar-M247LC superalloy has been stuided as the variables of plastic strain and stress range. The plastic strain range is the general criterion for LCF life prediction model like Coffin-Manson equation. On the other hand the stress range is also important to the criterion for LCF life evaluation. The complex effect of plastic strain and stress range on LCF life could be considered as the calculation of hysteresis loop area in fatigue testing. The LCF life as a function of plastic strain and stress range has been measured at the variables of strain rate and DS direction.
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