Microstructure and thermomechanical properties of magnesium alloys castings

• Autorzy: Lichý P. , Cagala M.
• Języki publikacji: EN

Abstrakty

EN

Magnesium alloys thanks to their high specific strength have an extensive potential of the use in a number of industrial applications. The most important of them is the automobile industry in particular. Here it is possible to use this group of materials for great numbers of parts from elements in the car interior (steering wheels, seats, etc.), through exterior parts (wheels particularly of sporting models), up to driving (engine blocks) and gearbox mechanisms themselves. But the use of these alloys in the engine structure has its limitations as these parts are highly thermally stressed. But the commonly used magnesium alloys show rather fast decrease of strength properties with growing temperature of stressing them. This work is aimed at studying this properties both of alloys commonly used (of the Mg-Al-Zn, Mn type), and of that ones used in industrial manufacture in a limited extent (Mg-Al-Sr). These thermomechanical properties are further on complemented with the microstructure analysis with the aim of checking the metallurgical interventions (an effect of inoculation). From the studied materials the test castings were made from which the test bars for the tensile test were subsequently prepared. This test took place within the temperature range of 20 C - 300 C. Achieved results are summarized in the concluding part of the contribution.

Słowa kluczowe

EN

mechanical properties; metallography; magnesium alloys; thermomechanical properties

PL

właściwości mechaniczne; metalografia; stop magnezu; właściwości termomechaniczne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2012
• Tom: Vol. 12, iss. 2
• Strony: 49--54
• Opis fizyczny: Bibliogr. 4 poz., rys., tab., wykr.

Twórcy

autor

Lichý P.

autor

Cagala M.

• Department of Metallurgy and Foundry Engineering, VSB-Technical University of Ostrava, 17. listopadu 2172/15, 708 33 Ostrava Poruba, CZ,

Bibliografia

• [1] Drapala J. et al. (2004). Magnesium, its alloys and Mg - admixture binary system. VŠB -TU Ostrava. 172.
• [2] Mordike B. L. & Ebert T. (2001). Magnesium, properties - application - potential. Materials Science A. 302, 37-45.
• [3] Roskosz S., Adamiec J. & Blotnicki M. (2007). Influence of delivery state quality on microstructure and mechanical properties of as cast AZ91 Mg alloy, Archives of Foundry Engineering. 7 (1), 143-146.
• [4] Bialobrzeski A., Saja K.& Hubner K. (2007). Ultralight Magnesium-Lithium Alloys. Archives of Foundry Engineering. 7 ( 3), 11-16.