Low Cycle Fatigue Behavior of Ni-Base Superalloy IN738LC at Elevated Temperature

Jae Hoon Kim; Kwon Tae Hwang; Keun Bong Yoo; Han Sang Lee

doi:10.4028/www.scientific.net/AMR.275.59

Paper Titles

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An Impregnation Technique for Crack Identification Following Uniaxial Tension Tests
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An Analysis of the Bonding Energy through Pull-Out Tests for Aerated Concrete with Various Steel Strip Geometries
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Low Cycle Fatigue Behavior of Ni-Base Superalloy IN738LC at Elevated Temperature
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Study of Local Failure of a Multi-Plate Arch Bridge by Numerical Modeling
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Assembly Deformation and Stresses of Compliant Structures
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Fracture Strengths of Mg Alloy AZ31B-H24 Friction Stir Lap Welds
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Effect of Tool Speeds during Friction Stir Lap Welding on Mode of Fracture and Fracture Strength of Al 6060-T5 Joints
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Low Cycle Fatigue Behavior of Ni-Base Superalloy IN738LC at Elevated Temperature

Abstract:

High strength nickel-base super alloys have been used in turbine blades for many years because of their superior performance at high temperature. The prediction of fatigue life for superalloys is important for improving the efficiency. In this study, low cycle fatigue tests are performed the variables of total strain range, and room and elevated temperature. The relations between plastic and total strain energy densities and number of cycles to failure are examined in order to predict the low cycle fatigue life of IN738LC super alloy. The fatigue life is evaluated by the Coffin-Manson equation, also the predicted lives by plastic and total strain energy density are compared with experimental results.