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Stanovení vhodného tvaru zkušebních tyčí pro odstranění vnitřních vad ovlivňujících testování nízko- a vysokocyklové únavy / Design of a suitable shape of test bars used for HCF (high cycle fatigue) and LCF (low cycle fatigue) and elimination of internal defects for reduction of their influence

The topic of this thesis is the formation of microporosity in cast test bars of nickel-base superalloy Inconel 713LC during solidification. The theoretical part consists of nickel alloys, their macrostructure, the method of casting and crystallization of nickel-based superalloys. The second part is devoted to the design of casting conditions, the production of shell molds, the size and shape of grains, evaluation of microporosity by various available methods, comparing the influence of grain size and the proportion of microporosity on the resulting values of the mechanical tests. Experiments were carried out in cooperation with PBS Velká Bíteš and ÚST foundry department.

Identiferoai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:231239
Date January 2014
CreatorsHemala, Robert
ContributorsŠustek, Petr, Ňuksa, Petr
PublisherVysoké učení technické v Brně. Fakulta strojního inženýrství
Source SetsCzech ETDs
LanguageCzech
Detected LanguageEnglish
Typeinfo:eu-repo/semantics/masterThesis
Rightsinfo:eu-repo/semantics/restrictedAccess

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