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Preiskave cevi pregrevalnika po dolgotrajnem obratovanjuArzenšek, Boris ...Cevi iz jekla vrste 10CrMo9 10 so bile v obratovanju 120 000 ur pri temperaturi 540°C in visokih tlakih. Metalografske preiskave v optičnem mikroskopu in scanning mikroskopu (SEM) so pokazale, da je ... v jeklu prišlo do mikrostrukturnih sprememb. Izločanja precipitatov in rast karbidov je izrazitejša na sevalni strani, kot na dimni strani cevi. Natezne preskuse in kratkotrajne preskuse lezenja smo naredili pri temperaturi obratovanja 540°C. Razlike v mehanskih lastnostih so zaradi mikrostrukturnih sprememb očitne. Na sevalni strani cevi ima jeklo nižje vrednosti napetosti tečenja in natezne trdnosti ter manjšo odpornost proti lezenju kot na domni strani cevi.Type of material - conference contributionPublish date - 1997Language - slovenianCOBISS.SI-ID - 18978565
Author
Arzenšek, Boris |
Vodopivec, Franc, 1931-2021 |
Kmetič, Dimitrij |
Lenart, J. |
Potočnik, M.
Topics
cevi |
natezni preskusi |
preskusi lezenja |
metalografske preiskave |
jeklo |
tubes |
tensile tests |
creep tests |
metallographic examination |
steel
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Vodopivec, Franc, 1931-2021 | 00142 |
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