Synthesis of Ti-Al porous preform

• Autorzy: Naplocha K. , Granat K.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Article describes production method of intermetallic porous perform for reinforcing of composite materials. Usefulness of the high temperature self-propagating synthesis (SHS), with appropriate modification, to produce perform for production of composite was evaluated. Design/methodology/approach: Mixture of aluminum and titanium powder was cold isostatically pressed (CIPed) and produced cylindrical pill was ignited in microwave field. Obtained structure usually have open porosity what enables for pressure infiltration with molten metal. The investigations of the structure of preforms on the scanning electron microscope (SEM) were made. Findings: The produced performs in most cases reveal open porosity, uniform morphology and are suitable for infiltration process. After reaction Al-Ti compounds form partly globular structure with microhardness much higher than substrates. Research limitations/implications: In the actual stages of this work proposed method can be used for manufacturing of porous performs, which mainly contain Al3Ti. During reaction, mixture compacts with the molar ratio of Al/Ti=1 were transformed into inhomogeneous structure. Practical implications: Obtained perform can be widely used as the reinforcement to produce hybrid composite materials by the infiltration method. Aluminum casting alloys can be locally reinforced to improve hardness and resistance to oxidization at high temperature. Originality/value: Article is valuable for persons engaged in production of casting composite materials reinforced with porous perform. Proposed method allows to incorporate hard structures from Al-Ti compounds into aluminum casting.

Słowa kluczowe

EN

composite; SHS; preform; infiltration

PL

kompozyty; przedkówka; infiltracja

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 26, nr 2
• Strony: 203--206
• Opis fizyczny: Bibliogr. 14 poz., il., tab., wykr.

Twórcy

autor

Naplocha K.

autor

Granat K.

• Institute of Production Engineering and Automation, Technical University of Wrocław, ul. Łukasiewicza 3/5, 50-371 Wrocław, Poland,

Bibliografia

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