The influence of heat treatment on the microstructure of GA8 magnesium alloy

• Autorzy: Kiełbus A. , Adamiec J. , Cwajna J. , Paśko J.
• Konferencja: 12th International Scientific Conference CAM3S'2006, 27-30th November 2006, Gliwice-Zakopane
• Języki publikacji: EN

Abstrakty

EN

Purpose: GA8 magnesium alloy is a general purpose gravity sand casting alloy containing aluminium, zinc and manganese. Typically, it is used in aerospace or commercial casting applications particularly where there is no high temperature requirement. The aim of this paper is to present the results of investigations on the microstructure of the GA8 magnesium alloy after heat treatment. Design/methodology/approach: The study was conducted on GA8 magnesium alloys in as-cast condition and after heat treatment. The microstructure was characterized by optical microscopy (Olympus GX-70) and a scanning electron microscopy (Hitachi S3400) equipped with an electron dispersive detector EDS (VOYAGER of NORAN INSTRUMENTS). To measure the stereological parameters, an image analysis program "AnalysisPro(R)" was used. Findings: The microstructure of GA8 magnesium alloy has a solid solution structure alpha with alpha+discontinuous beta areas and continuous beta (Mg17Al12) phase at grain boundaries. After solution treatment a reduction of the number of beta precipitations was observed. Application of ageing treatment caused precipitation of discontinuous beta phase. Research limitations/implications: Future researches should involve investigations of the effect of heat treatment parameters on the mechanical properties of GA8 magnesium alloy. Practical implications: The established heat treatment parameters can be useful for preparing heat treatment technology of the GA8 magnesium alloy. Originality/value: The relationship between the initial structure, heat treatment parameters and Mg17Al12 phase morphology in GA8 magnesium alloy was specified.

Słowa kluczowe

EN

metallic alloys; manufacturing; processing; heat treatment; GA8 magnesium alloy

PL

stopy metaliczne; wytwarzanie; obróbka cieplna; stop magnezu GA8

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 20, nr 1-2
• Strony: 131--134
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Kiełbus A.

autor

Adamiec J.

autor

Cwajna J.

autor

Paśko J.

• Department of Materials Science, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland,

Bibliografia

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