Microstructure of AZ91-Ti6Al4V metal-metal composite in as-cast conditions and after heat treatment

• Autorzy: Braszczyńska-Malik K. N. , Przełożyńska E.

Warianty tytułu

PL

Mikrostruktura kompozytu typu metal-metal AZ91-Ti6Al4V w stanie pierwotnym oraz po obróbce cieplnej

• Języki publikacji: EN

Abstrakty

EN

The results of structure investigations of an experimental magnesium matrix composite reinforced with Ti6Al4V particles in as-cast conditions and after heat treatment are presented. The commercial AZ91 magnesium alloy was used as the matrix alloy. The experimental composite was reinforced with 30 wt.% Ti6Al4V alloy spherical particles. The investigated material was obtained by the stir-casting method. The microstructure of the fabricated composites was characterized by uniform distribution of the titanium particles within the magnesium matrix. The phase composition of the composite was typical for the used component. New phases were not revealed by XRD techniques. Solution annealing at 693 K for 24 h and 48 h (with water quenching), followed by ageing at 423 K for 16 h was carried out. After ageing discontinuous precipitation process of the γphase (typical for AZ91 magnesium alloy) was observed. The applied heat treatment processes did not bring about changes in the chemical composition between the used components.

PL

Przedstawiono wyniki badań struktury kompozytów na osnowie magnezowej z cząstkami Ti6Al4V w stanie pierwotnym oraz po obróbce cieplej. Na osnowę kompozytu wytypowano komercyjny stop magnezu AZ91. Doświadczalny kompozyt umacniany był 30% wag. sferoidalnych cząstek Ti6Al4V. Badany materiał został wytworzony metodą odlewniczą. Mikrostruktura wytworzonego kompozytu charakteryzowała się jednorodnym rozmieszczeniem cząstek tytanowych wewnątrz magnezowej osnowy. Skład fazowy kompozytu był typowy dla użytych komponentów. Nie ujawniono metodami XRD występowania tych faz. Przeprowadzono ujednorodnianie w temperaturze 693 K przez 24 i 48 h (z chłodzeniem w wodzie) ze starzeniem w temperaturze 423 K przez 16 h. Po starzeniu obserwowano proces nieciągłego wydzielania fazy γ (typowego dla stopu magnezu AZ91). Użyte procesy obróbki cieplnej nie wywołały zmian w składzie chemicznym pomiędzy zastosowanymi komponentami.

Słowa kluczowe

EN

metal-metal composite; AZ91 magnesium alloy; Ti6Al4V particles; heat treatment; microstructure

PL

kompozyt metal-metal; stop magnezu AZ91; cząstki Ti6Al4V; obróbka cieplna; mikrostruktura

• Wydawca: Polskie Towarzystwo Materiałów Kompozytowych
• Czasopismo: Composites Theory and Practice
• Rocznik: 2014
• Tom: R. 14, nr 4
• Strony: 224--228
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Braszczyńska-Malik K. N.

• Czestochowa University of Technology, Institute of Materials Engineering, al. Armii Krajowej 19, 42-200 Częstochowa, Poland

autor

Przełożyńska E.

• Czestochowa University of Technology, Institute of Materials Engineering, al. Armii Krajowej 19, 42-200 Częstochowa, Poland

Bibliografia

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