Microstructure and mechanical properties of the Al-Ti alloy with calcium addition

• Autorzy: Dobrzański L. A. , Labisz K. , Olsen A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In this paper there are presented the investigation results of mechanical properties and microstructure with intermetallic phases of the aluminium-titanium alloy with a defined content of Ca addition. The purpose of this work was also to determine the heat treatment conditions for solution heat treatment of the investigation alloys. Design/methodology/approach: The reason of this work was to determine the heat treatment influence, particularly solution heat treatment time to the changes of the microstructure, as well to determine which intermetallic phases occur after the heat treatment performed, and how is the morphology of these particles. Findings: After solution heat treatment for 4 hours the structure changes in a way, that the grains are larger and no more uniform as showed before. The most stable intermetallic in the Al-Ti system is the Al3Ti phase. The solution heat treatment time should be greater than 4 hours to ensure a proper solution of titanium and calcium in the Al-α solid solution. Research limitations/implications: The investigated aluminium samples were examined metallographically using optical microscope with different image techniques, SEM, TEM and analyzed using a Vickers micro-hardness tester, also EDS microanalysis was made. Practical implications: As an implication for the practice a new alloy can be developed, some other investigation should be performed in the future, but the knowledge found in this research shows an interesting investigation direction. Originality/value: The combination of light weight and high strength Ti-based alloys is very attractive for aerospace and automotive industries. Furthermore, the presence of calcium can bring into existence new unknown phases as well can enhance the thermal stability of ternary Al-Ti-Ca alloy because of its higher melting point then Al-Ti.

Słowa kluczowe

EN

casting; heat treatment; aluminium alloys; calcium

PL

odlewanie; obróbka cieplna; stopy aluminium; wapno

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 26, nr 2
• Strony: 183--186
• Opis fizyczny: Bibliogr. 16 poz., tab., wykr.

Twórcy

autor

Dobrzański L. A.

autor

Labisz K.

autor

Olsen A.

• Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland,

Bibliografia

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