Effect of dynamic recrystallizationon the hardness of selected alloys

• Autorzy: Krawczyk J. , Łukaszek-Sołek A.

Identyfikatory

DOI

10.15199/67.2015.5.4

Warianty tytułu

PL

Wpływ rekrystalizacji dynamicznej na twardość wybranych stopów

• Języki publikacji: EN

Abstrakty

EN

Samples of selected alloys were compressed in a Gleeble thermo-mechanical simulator at selected temperatures and strain rates to a total true strain of 1. The samples were made of twelve alloys: Monel K-500, Inconel 625, Inconel 718, Permalloy, Waspaloy, Ti-6Al-4V, Ti-6Al-2Sn-4Zr-6Mo, Ti-3Al-8V-6Cr-4Mo-4Zr, Ti-10V-2Fe-3Al, Ti-48Al-2Cr-2Nb, 4130 steel and 4340 steel. Exemplary microstructures of the alloys examined after the deformation under the conditions conducive to the occurrence of a partial dynamic recrystallization are shown. The process of dynamic recrystallization has a significant effect on the alloys’ final hardness: it frequently reduces the hardness. The grain size decrease during the dynamic recrystallization process may sometimes increase the alloys’ final hardness.

PL

Próbki wybranych stopów były spęczane w symulatorze termo-mechanicznym Gleeble w wybranych temperaturach oraz z wybranymi prędkościami odkształcenia do wielkości odkształcenia rzeczywistego 1. Próbki do badań wykonano z dwunastu stopów: M onel K -500, Inconel 625, Inconel 718, Permalloy, Waspaloy, Ti-6Al-4V, Ti-6Al-2Sn-4Zr-6Mo, Ti-3Al-8V-6Cr- -4Mo-4Zr, Ti-10V-2Fe-3Al, Ti-48Al-2Cr-2Nb, stal 4130 oraz stal 4340. Przedstawiono przykładowe mikrostruktury badanych stopów po odkształceniu plastycznym. Wyboru mikrostruktur dokonano opierając się na stopniu zaawansowania procesu rekrystalizacji dla zmiennej prędkości odkształcenia. Proces rekrystalizacji dynamicznej ma widoczny wpływ na twardość badanych stopów. Najczęściej proces rekrystalizacji dynamicznej (lub rekrystalizacji zwłocznej) zmniejsza twardość materiału. Jednakże, rozdrobnienie ziarna w wyniku początkowego etapu rekrystalizacji, wpływ odbudowy mikrostruktury oraz rozrostu ziarna na hartowność może skutkować wzrostem twardości w wyniku procesu rekrystalizacji dynamicznej.

Słowa kluczowe

EN

Ni-base alloy; Ti-base alloy; steel; dynamic recrystallization; post-dynamic recrystallization; hardness

PL

stopy niklu; stopy tytanu; stal; rekrystalizacja dynamiczna rekrystalizacja zwłoczna; twardość

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Rudy i Metale Nieżelazne Recykling
• Rocznik: 2015
• Tom: R. 60, nr 5
• Strony: 227--237
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Krawczyk J.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Av. A. Mickiewicza 30, 30-059 Kraków, Poland

autor

Łukaszek-Sołek A.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Av. A. Mickiewicza 30, 30-059 Kraków, Poland

Bibliografia

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