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Microstructure of experimental AZ91 alloy with an addition of rare earth elements (RE) at a level of 4 wt.% was examined by means of light microscopy. The investigated AZ91 + 4 wt.% RE alloy was fabricated by adding cerium rich mish metal to molten commercial AZ91 alloy. In the microstructure of the resulting alloy, besides [alpha] solid solution, [alpha] + [gamma] eutectic and discontinuous precipitates of [gamma] phase, also the Al_11RE_3 phase with needle-like morphology and the polygonal Al_10RE_2Mn_7 phase were revealed. No segregation of rare earth elements was found in the investigated gravity cast alloy, which was confirmed by statistical analysis of cerium concentrations in selected parts of the cast. Similar results were obtained for manganese. Ce and Mn concentrations were determined by a spectrophotometric method.
Czasopismo
Rocznik
Tom
Strony
217--220
Opis fizyczny
Bibliogr. 13 poz., rys., tab.
Twórcy
autor
autor
autor
autor
autor
- Institute of Materials Engineering, Częstochowa University of Technology, Al. Armii Krajowej 19, 42-200 Częstochowa, Poland, kacha@wip.pcz.pl
Bibliografia
- [1] Mordike B.L., Ebert T.: Magnesium Properties - applications – potential, Materials Science and Engineering A, 2001, Vol. 302, 37-45.
- [2] Kulekci M.K.: Magnesium and its alloys applications in automotive industry, The International Journal of Advanced Manufacturing Technology, 2008, Vol. 39, 851-865.
- [3] Watarai H.: Trend of research and development for magnesium alloys, Science & Technology Trends, 2006, Vol. 18, 84-97.
- [4] Wu G., Fan Y., Gao H., Zhai C., Zhu J.P.: The effect of Ca and rare earth elements on the microstructure, mechanical properties and corrosion behavior of AZ91D, Materials Science and Engineering A, 2005, Vol. 408, 255-263.
- [5] Zhao Z., Chen Q., Wang Y., Shu D.: Microstructures and mechanical properties of AZ91D alloys with Y addition, Materials Science and Engineering A, 2009, Vol. 515, 152-161.
- [6] Lu Y., Wang Q., Zemg X., Ding W., Zhai C., Zhu Y.: Effects of rare earths on the microstructure, properties and fracture behaviour of Mg-Al alloys, Materials Science ang Engineering A, 2000, Vol. 278, 66-76.
- [7] Zhu S.M., Gibson M.A., Nie J.F., Easton M.A., Abbott T.B.: Microstructural analysis of the creep resistance of die-cast Mg-4Al-2RE alloy, Scripta Materialia, 2008, Vol. 58, 477-480.
- [8] Braszczyńska-Malik K.N, Żydek A.: Microstructure of Mg-Al alloy with rare earth elements, Archives of Foundry Engineering, 2008, Vol. 8, 23-26.
- [9] Polis-Olejniczak A., Żydek A., Malik M.A.: Spektrofotometryczne oznaczanie ceru i manganu w stopach magnezu, Materiały konferencyjne nr 1, X Międzynarodowa Konferencja Naukowa: Nowe technologie i osiągnięcia w metalurgii i inżynierii materiałowej, Wyd. WIPMiFS PCz, Częstochowa, 2009 (in Polish).
- [10] Patnaik P.: Dean’s Analytical Chemistry Handbook, 2nd Ed., McGraw-Hill, USA, 2004.
- [11] Greń J.: Statystyka matematyczna. Modele i zdania, PWN, Warszawa 1994 (in Polish).
- [12] Dowdy S., Weardon S., Chilko D.: Statistics for Research, 3rd Ed., Wiley, New Jersey, 2004, Ch. 10.
- [13] Ryan T.P.: Modern Engineering Statistics, Wiley, New Jersey, 2007, Ch. 5.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ3-0037-0037