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Paper Titles
Effect of the Particle Size of γ’ Phase on the Mechanical Properties of Ni Base Superalloy
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Characterization of Residual Stresses in 718 Turbine Discs by Neutron Diffraction and Finite Element Modelling
p.102
Cooling Rate Dependent Morphology of the γ' Precipitates in Nickel-Base Superalloy Udimet 500
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Influence of Crystal Orientation on the Freckle Formation in Directionally Solidified Superalloys
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The Microstructure Changes in IN713LC during the Creep Exposure
p.120
Effect of Elastic Driving Force on the Evolution of Microstructures in the Secondary Creep Stage
p.126
Change in Microstructure at Grain Boundaries with Creep Deformation of Polycrystalline Nickel-Based Superalloy IN-100 at 1273K
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Change in Gamma Prime Morphology and Dislocation Substructures of Single Crystal Nickel-Based Superalloy, CMSX-4, Pre-Crept at 1273K-400MPa with Simple Aging
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The Effect of Lattice Misfit on Deformation Mechanisms at High Temperature
p.144

The Microstructure Changes in IN713LC during the Creep Exposure

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Abstract:

Nickel-based creep resisting alloys (strengthened by γ´) are the basic materials for high-temperature constructional parts in aircraft engines and energy units. These parts are exposed to combined effects of mechanical stresses, high temperature and dioxide-corrosion conditions. The microstructure changes of cast polycrystalline Ni-based superalloy IN713LC after creep exposure were studied. Three specimens with three different diameters were used for creep tests. The degradation stage (damage parameter π) was determined for all parts of specimens. Individual parts of specimens were metallographic observed and analyzed by image analysis after rupture. The results were compared with model of stress distribution in the specimen with potential damage in the centre of the specimen.

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Periodical:

Advanced Materials Research (Volume 278)

Pages:

120-125

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.278.120

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Online since:

July 2011

Authors:

Simona Hutařová, Marta Kianicová, Tomás Vlasák, Pavel Hutař, Tomáš Podrábský, Jan Hakl

Keywords:

Creep, Damage Parameter, Image Analysis, Microstructure Change, Rafting

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