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| rdf:type
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| Description
| - Due to the demanding operating conditions of nickel alloys, respectively high-alloyed steels application, the materials deserve an extraordinary attention for the structural changes they are prone to during their construction longevity. The changes resulting from their multicomponent base that is formed from complicated ternary or quaternary systems often substantially influence their mechanical and corrosion properties. The paper evaluates the consequences of experimental long-term thermal exposure lasting up to 6170 hours which is about to simulate real working conditions – e.g. weld overlay of heat-exchanging surfaces at the temperature of 700 °C. Materials EN grades X1Cr24Ni22Mo6; X1Ni32Cr28Mo7; NiCr23Mo16Al; NiMo29Cr were chosen for the evaluation. As first their microstructural changes were evaluated by optical and electron microscopy methods, and by X-ray diffraction analysis. The effect of a long-term exposure of high-alloyed materials to high temperatures causes structural changes, and consequently the material becomes more susceptible to some types of corrosion attack (mainly localized) to which they are resistant in normal conditions. In order to determine the effect of a long-term thermal exposure on the material corrosion resistance, it is possible to apply the method of an open-circuit potential measurement in a medium with high-oxidizing ability. Specifically, the “green death” solution was used. For the evaluation or a possible prediction of degradation of mechanical properties, hardening, eventually creep strength, methods of hardness measurement of the material matrix as well as methods measuring microhardness of individual microstructure components identified by SEM methods were applied for all grades of thermal degradation.
- Due to the demanding operating conditions of nickel alloys, respectively high-alloyed steels application, the materials deserve an extraordinary attention for the structural changes they are prone to during their construction longevity. The changes resulting from their multicomponent base that is formed from complicated ternary or quaternary systems often substantially influence their mechanical and corrosion properties. The paper evaluates the consequences of experimental long-term thermal exposure lasting up to 6170 hours which is about to simulate real working conditions – e.g. weld overlay of heat-exchanging surfaces at the temperature of 700 °C. Materials EN grades X1Cr24Ni22Mo6; X1Ni32Cr28Mo7; NiCr23Mo16Al; NiMo29Cr were chosen for the evaluation. As first their microstructural changes were evaluated by optical and electron microscopy methods, and by X-ray diffraction analysis. The effect of a long-term exposure of high-alloyed materials to high temperatures causes structural changes, and consequently the material becomes more susceptible to some types of corrosion attack (mainly localized) to which they are resistant in normal conditions. In order to determine the effect of a long-term thermal exposure on the material corrosion resistance, it is possible to apply the method of an open-circuit potential measurement in a medium with high-oxidizing ability. Specifically, the “green death” solution was used. For the evaluation or a possible prediction of degradation of mechanical properties, hardening, eventually creep strength, methods of hardness measurement of the material matrix as well as methods measuring microhardness of individual microstructure components identified by SEM methods were applied for all grades of thermal degradation. (en)
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| Title
| - THE INFLUENCE OF STRUCTURE CHANGES ON SOME QUALITIES OF HIGH-ALLOYED MATERIALS IN THE SIMULATION OF LONG-TERM OPERATING CONDITIONS
- THE INFLUENCE OF STRUCTURE CHANGES ON SOME QUALITIES OF HIGH-ALLOYED MATERIALS IN THE SIMULATION OF LONG-TERM OPERATING CONDITIONS (en)
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| skos:prefLabel
| - THE INFLUENCE OF STRUCTURE CHANGES ON SOME QUALITIES OF HIGH-ALLOYED MATERIALS IN THE SIMULATION OF LONG-TERM OPERATING CONDITIONS
- THE INFLUENCE OF STRUCTURE CHANGES ON SOME QUALITIES OF HIGH-ALLOYED MATERIALS IN THE SIMULATION OF LONG-TERM OPERATING CONDITIONS (en)
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| skos:notation
| - RIV/61989100:27360/12:86085737!RIV13-MSM-27360___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61989100:27360/12:86085737
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Nickel alloys, corrosion resistance, hardness, green death (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - METAL 2012 : 21st International Conference on Metallurgy and Materials : conference proceedings
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Bystrianský, Jaroslav
- Bílek, Pavel
- Kraus, Martin
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
| |
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