28th Congress of the International Council of the Aeronautical Sciences, 23 - 28 September 2012, Brisbane, Australia
Paper ICAS 2012-7.3.3
LCF BEHAVIOR AND LIFE EVALUATION OF A SINGLE CRYSTAL NICKEL BASE SUPERALLOY UNDER DIFFERENT DWELL CONDITION
H. C. Yu, Y. Li, S. C. Zhang, X. R. Wu
Beijing Inst. of Aeronautical Materials, China
Keywords: crystallographic orientation, low cycle fatigue, life prediction, single crystal superalloy, strain dwell
LCF tests were conducted at elevated temperatures under different dwell conditions on a single crystal nickel base superalloy with ,  and  orientations. The cyclic deformation features were analysed and a lifing model was proposed to evaluate the fatigue life. The prediction agrees well with experimental results.
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