Influence of Heat Treatment on Structure and Properties of the Cast Magnesium Alloys

Author:

Tański Tomasz1,Dobrzański Leszek Adam1,Čížek Lubomír2

Affiliation:

1. Silesian University of Technology

2. VŠB - Technical University Ostrava

Abstract

In this paper is presented the structure and proprieties of the cast magnesium alloys as cast state and after heat treatment cooled with different cooling rate, depending on the cooling medium (furnace, water, air). For investigations samples in shape of 250x150x25 mm plates were used. The presented results concern X-ray qualitative and quantitative microanalysis as well as qualitative and quantitative X-ray diffraction method, tensile tests, hardness measurement. In the analysed alloys a structure of α %solid solution and fragile phase β (Mg17Al12) occurred mainly on grain borders as well as eutectic and phase AlMnFe, Mg2Si. Investigation are carried out for the reason of chemical composition influence and precipitation processes influence to the structure and mechanical properties of the magnesium cast alloys with different chemical composition in as cast alloys and after heat treatment.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference11 articles.

1. Magnesium Alloys and their Application, ed. Kainer, K.U., Sb. Int. Congress Magnesium Alloys and their Application, Mnichov, 2000, pp.3-8, 534-608.

2. J.F. Grandfield, J.A. Taylor : Tensile cohereny in semi-solid AZ91, Held during the TMS Annual Meting in Seattle, Washington, USA, (2002).

3. ASM specialty Handbook- Magnesium and Magnesium Alloys, ed. Avedesian, M.M., Baker, H., ASM International, USA, 1999, pp.3-84.

4. J.M. Tartaglia, J.C. Grebetz: Observations of Intermetallic Particle and Inclusion Distributions in Magnesium Alloys., The Minerals, Metals&Materials Society, (2000).

5. Mordike B.L., Ebert T.: Magnesium. Properties-applications-potential, Materials Science and Enrineering nr A302, Journal of Materials Processing Technology, 117 (2001), pp.37-45.

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