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Regularities of Formation and Destruction of Molybdenum-Tungsten Alloy under High-temperature Replated Static Loading


Bukhanovskii, V.; Mamuzić, Ilija; Kravchenko, V.
Regularities of Formation and Destruction of Molybdenum-Tungsten Alloy under High-temperature Replated Static Loading // Materials and Metallurgy, Summaries of Lectures / Mamuzić, Ilija (ur.).
Zagreb: Hrvatsko metalurško društvo, 2004. str. 219-219 (poster, međunarodna recenzija, sažetak, znanstveni)


Naslov
Regularities of Formation and Destruction of Molybdenum-Tungsten Alloy under High-temperature Replated Static Loading

Autori
Bukhanovskii, V. ; Mamuzić, Ilija ; Kravchenko, V.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Materials and Metallurgy, Summaries of Lectures / Mamuzić, Ilija - Zagreb : Hrvatsko metalurško društvo, 2004, 219-219

Skup
6. Međunarodni simpozij Hrvatskog metalurškog društva, SHMD 2004, Materijali i metalurgija

Mjesto i datum
Šibenik, Hrvatska, 20-24.07.2004

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Characteristic; low-cycle strength; cyclic creep; molybdenum-tungsten alloy

Sažetak
The paper presents the investigation of the characteristic of low-cycle strength and cyclic creep of molybdenum-tungsten alloy of the Mo-30%-W-NbC-C system prepared by the powder metallurgy methods at 1770, 2020 and 2270 K. In the temperature range studied, the authors obtained a unified dependence of the stady-state cyclic creep rate on the ratio of the equivalent stress to the material yield strength at the corresponding temperature and a generalized curve of low-cycle strength for the alloy. They have shown that cyclic load application accelerates the processes of oriented plastic deformation and fracture of the alloy by 1, 5 to 7 times as compared to long-term loading, with the qualitative similarity of cyclic and static creep curves. The results of the investigation of structural changes and destruction for molybdenum-tungsten alloy of the Mo-30%-W-NbC-C are presented. It has been shown that fracture of the alloy under high temperature occurs due to proceeding the critical stage of polygonization.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija



POVEZANOST RADA


Projekt / tema
0124001

Ustanove
Metalurški fakultet, Sisak

Autor s matičnim brojem:
Ilija Mamuzić, (27862)