Investigation of Indentation Parameters Near the Interface between Two Materials

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The paper participates in a development of composites. A composite tungsten-steel is studied as materials suitable for a first wall of tokamak, a composite FeAl + Al2O3 is a possible material for fourth generation of a nuclear power plant and a composite Al2O3 + YSZ is a potential implant material. The focus of our study is change of material properties near the interface and a determination of area size which is influenced by the adjacent material. Material properties are investigated by nanoindentation. The task is simulated using finite element method. Simulated specimen is composed of a tungsten part and a steel part. The sharp boundary between materials is a plane which is located parallel to the loading force direction. Elastic modulus is determined in dependence of a distance between the interface and a tip of the indenter. The simulated results are verified experimentally.

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31-34

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September 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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