Microstructural characterization of the new tool Ni-based alloy with high carbon and chromium content

• Autorzy: Bała P.

Warianty tytułu

PL

Charakterystyka mikrostruktury stopu modelowego materiału narzędziowego na osnowie Ni o dużej zawartości węgla i chromu

• Języki publikacji: EN

Abstrakty

EN

The concept of new tool materials, based on Ni alloys strengthened by intermetallic compounds, intended for applications at high temperatures is presented in the paper. The chemical composition of this new material was designed in such a way as to obtain the matrix strengthening by means of the precipitation of intermetallic compounds rich in Ni and to have the carbide fraction above 25%. Carbides should remain stable in the microstructure, regardless of the heat treatment, since they favourably influence an abrasion resistance. The results of microstructure investigations in the as-cast condition, are given. The type of phases appearing in the microstructure was determined and their morphology described. The main microstructure components of the investigated Ni-based alloy with high carbon and chromium content are: the γ phase, which constitutes a matrix, the γ' phase, which occurs as fine globular precipitates and the primary Ta and Cr carbides (of MC and M7C3 type - respectively).

PL

W pracy przedstawiono koncepcję nowych materiałów narzędziowych na osnowie niklu umacnianych związkami faz międzymetalicznych, przewidywanych do pracy w wysokich temperaturach. Skład chemiczny nowego materiału zaprojektowano tak, aby umocnienie osnowy uzyskać w wyniku wydzielania związków metalicznych bogatych Ni, a udział węglików wynosił ponad 25%. Węgliki powinny pozostać stabilne w mikrostrukturze niezależnie od obróbki cieplnej, wpływając korzystnie na odporność na ścieranie. Zamieszczono badania mikrostruktury stopu wstanie lanym. Określono rodzaj faz występujących w mikrostrukturze oraz opisano ich morfologię. Głównymi składnikami mikrostruktury badanego stopu na osnowie Ni, o dużej zawartości węgla i chromu są: faza γ, która stanowi osnowę, faza γ', która występuje w postaci drobnych kulistych wydzieleń oraz pierwotne węgliki Ta (typu MC) i Cr (M7C3).

Słowa kluczowe

EN

tool materials; Ni-based alloys; intermetallic compounds; carbides

PL

materiały narzędziowe; stopy na osnowie niklu; związki międzymetaliczne; węglik

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2010
• Tom: Vol. 55, iss. 4
• Strony: 1053--1059
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Bała P.

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

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