Mechanical properties and structure of magnesium alloy AZ91 as cast and after hot forming

• Autorzy: Čížek L. , Olejníčková L. , Kocich R. , Prażmowski M.
• Konferencja: Międzynarodowe Sympozjum: Metody oceny struktury oraz własności materiałów i wyrobów (XXIII ; 22-24.10.2008 ; Jarnołtówek, Polska)
• Języki publikacji: EN

Abstrakty

EN

Magnesium is a lightest of all structural metals. Although magnesium does not occur in nature in the metallic form, magnesium compounds occur worldwide. Magnesium has been used for wide variety applications, including pyrotechnics and metallurgical, chemical, electrochemical, and structural applications. Magnesium and magnesium alloys are primarily used in aeronautical and automobile industry in wide variety of structural characteristics because of their high strength-to-weight ratios (tensile strength/density), comparable !o those of other structural metals. Magnesium has relatively good electrical conductivity and thermal conductivity. It also has a very high damping capacity that means the ability to absorb elastic vibrations [1 -4]. For practical design are usually used two categories of maginesium alloys: First category (I.) represents magnesium alloys with content of 2-10 % of Al, pertinently with minor content of Zn and Mn. These alloys are produced with low (relatively low) costs and their mechanical quality rapidly fails down at higher temperatures. Second category (II.) represents magnesium alloys with wide variety of chemical elements (for ex. Zn. Th, Ag and Si) instead of Al, but always with effectively low content of Zr which means close-grained structure and higher mechanical quality. These alloys have better characteristics at higher temperatures but more expensive elements together with special production technology means higher production costs.

• Wydawca: Oficyna Wydawnicza Politechniki Opolskiej
• Czasopismo: Zeszyty Naukowe. Mechanika / Politechnika Opolska
• Rocznik: 2008
• Tom: z. 92
• Strony: 39--40
• Opis fizyczny: Bibliogr. 5 poz.

Twórcy

autor

Čížek L.

autor

Olejníčková L.

autor

Kocich R.

autor

Prażmowski M.

• VŠB-TU Ostrava

Bibliografia

• [1] AGHION, E., BRONFIN, B.: Magnesium Alloys Development towards the 21st Century, In Sborník z konference Materiasls Science Forum. Switzerland: Trans Tech Publication, 2000, s. 19-28.
• [2] ASM Specialty Handbook- Magnesium and Magnesium Alloys, ed. Avedesian, M.M., Baker, H.: ASM International, USA, 1999, s. 3-84.
• [3] PTÁČEK, L.: Slitiny horcíku- soucasný stav vývoje a použití, In Sborník z konference METAL 2001. Ostrava : Tanger, 2001, s. 1-12.
• [4] DAVIS, J.R.: Metals Handbook, Desk Edition, Second Edition, ASM International, The Materials Information Society , USA, 1998, s.560- 564.
• [5] ČÍŽEK L., KOŘENÝ R., JUŘIČKA I., MAISNER J., GREGER M., LASEK S., BEŤÁKOVÁ P., HERNAS A.: Structure and Properties of the Selected magnesium Alloys, Proceedings of 10th Jubilee International Scientifíc Conference AMME'2001, Gliwice-Zakopané, 2001, 75-78.