Influence of microstructure and inhomogeneity on the properties of the pressure die cast magnesium alloy AM50 HP.

• Autorzy: Regener D. , Schick E.

Warianty tytułu

PL

Wpływ mikrostruktury i niejednorodności na właściwości odlewanego ciśnieniowo stopu AM50HP.

• Konferencja: XVIth Physical Metallurgy and Materials Science Conference on Advanced Materials and Technologies AMT'2001, Gdańsk-Jurata, 16-20 September 2001
• Języki publikacji: EN

Abstrakty

EN

The paper deals with the influence of microstructure and manufacture induced porosity on the mechanical properties of plate-like components from the pressure die cast alloy AM50 HP. The assessment of the material behaviour was based upon microstructural investigations by means of light and electron scanning microscopy, hardness measurements, tensile tests, in-situ tensile and in-situ bending tests. The results showed a coarsening of the grain and dendrite structure, respectively, and an increased percentage of porosity from the rim to the middle of the plate. In addition, the matrix grains had a cored structure. Hence is followed an irregular microhardness course through the plate thickness and the reduction of the microhardness values from rim to the middle of the plate. Tensile and in-situ tensile tests on specimens, which due to the different cutting from the plate obtained more pores, resulted in reduced strength values, but especially in decreased total elongations. Specimens, in-situ tested at a temperature >120 degrees centigrade led to lower values of strength and elongation. The effect of the porosity on the values of the in-situ bending test was not so serious.

Słowa kluczowe

EN

microstructure; inhomogeneity; pressure die cast magnesium alloy; die casting; mechanical properties; hardness; tensile test; bending test

PL

mikrostruktura; niejednorodność; stop magnezowy; odlewanie ciśnieniowe; właściwości mechaniczne; twardość; próba rozciągania; próba zginania

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 2001
• Tom: R. XXII, nr 5
• Strony: 768--771
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Regener D.

• Otto-von-Guericke-University, Magdeburg, Germany

autor

Schick E.

• Otto-von-Guericke-University, Magdeburg, Germany

• Otto-von-Guericke-University, Magdeburg, Germany

Bibliografia

• [1] Kainer, K.U. (Hrsg.): Magnesium – Eigenschaflen, Anwendungen, Potenziale. WILEY-VCH Verlag GmbH, Weinheim, 2000
• [2] Aune, T.K., Wetengen, H.: Property update on magnesium die casting alloys. SAE Technical Paper 950424, Warrendale, 1996.
• [3] Zheng Liu, Lihe Chen, Huijie Zhao, Yue Wang, Zhongguang Wang, Klein. F.: The influence of porosity of magnesium die casting alloys on its mechanical properties. Metall 54 (2000) 122-125.
• [4] Westengen, H., Liu-Ying Wei, Aune, T., Albright, D.: Effect of intermediate temperature aging on mechanical properties and microstructure of die cast AM-alloys. In: Magnesium Alloys and their implications (Eds. Mordike, B.L.. Kainer, K.U.). Werkstoff-Informationsgesellschaft mbH, Frankfurt, 1998, pp. 209-214.