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Thermal analytical investigations of the magnesium alloy AZ91

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The results of thermal derivative analysis (TDA), differential scanning calorimetric (DSC) measurements and microstructure investigations of commercial AZ91 magnesium alloy are presented. The performed examinations allowed to determine the microstructure after solidification process and also precipitation process during continuous heating of supersaturated solid solution. The [alpha]-phase and [alpha]+[gamma] semi-divorced eutectic were observed in as-cast material, whereas both discontinuous and continuous precipitates of [gamma] phase were revealed after heating supersaturated AZ91 alloy.
Rocznik
Strony
177--180
Opis fizyczny
Bibliogr. 23 poz., il., rys.
Twórcy
  • Częstochowa University of Technology, WIPMiFS, Institute of Materials Engineering, Al. Armii Krajowej 19, 42-200 Częstochowa, kacha@mim.pcz.czest.pl
Bibliografia
  • [1] Dahle A.K., Lee Y.C., Schaffer P.L., StJohn D.H., Development of as-cast microstructure in magnesium-aluminium alloys, J Light Met. 1 (2002) 61÷72
  • [2] Braszczyńska-Malik K.N., Studium kształtowania mikrostruktury stopów magnez-aluminium, Wyd. WIPMiFS PCz., Częstochowa, 2005 (in Polish)
  • [3] Duly D., Simon J.P., Brechet Y., On the competition between continuous and discontinuous precipitations in binary Mg-Al alloys, Acta Metal. Mater. 43 (1995) 101÷106
  • [4] Braszczyńska K.N., The microstructure of a Mg-10wt%Al alloys, Zeits. Metal. 93 (2002) 845÷850
  • [5] Celotto S., TEM study of continuous precipitation in Mg-9 wt% Al-1 wt% Zn alloy, Acta Mater. 48 (2000) 1775÷1787
  • [6] Celotto S., Bastow T. J., Study of precipitation in aged binary Mg-Al and ternary Mg-Al-Zn alloys using 27Al NMR spectroscopy, Acta Mater. 49 (2001) 41÷45
  • [7] Amir Q.M., Gupta S.P., Cellular precipitation and precipitate coarsening in a Mg-Al alloy, Can. Metal. Quart. 34 (1995) 43÷50
  • [8] Zięba P., Local characterization of the chemistry and kinetics in discontinuous solid state reactions, Institute of Metallurgy and Materials Science Polish Academy of Sciences, Cracow, 2001
  • [9] Porter D. A., Easterling K. N., Phase transformations in metals and alloys, Chaapman and Hall, London 1991
  • [10] Rabkin E., Gust W., Estrin Y., On dynamic segregation in the discontinuous precipitation reaction, Scrip. Mater. 37 (1997) 119÷124
  • [11] Bradai D., Kadi-Hanifi M., Zięba P., Kuschke W. M., Gust W., The kinetics of the discontinuous precipitation and dissolution in Mg-rich Al alloys, J Mater. Sci. 34 (1999) 331÷336
  • [12] Bradai D., Zięba P., Bischoff E., Gust W., A new mode of the discontinuous dissolution reaction in Mg-10 wt.% Al alloys, Mater. Chem. and Phys. 72 (2001) 401÷404
  • [13] Bastow T.J., Celotto S., Clustering and formation of nanoprecipitates in ductile aluminium and magnesium alloys, Mater. Sci. and Eng. C23 (2003) 757÷762
  • [14] Brastow T.J., Smith M.E., Observation of precipitation in Mg-Al alloys by 25Mg and 27Al NMR, J Phys. Condensed. Matter 7 (1995) 4929÷4937
  • [15] Zhang M.X., Kelly P.M., Crystallography of Mg17Al12 precipitates in AZ91D alloy, Scrip. Mater. 48 (2003) 647÷652
  • [16] Matitrejean S., Verona M., Brechet Y., Prudy G.R., Morphological instabilities in Mg-7.7 at% Al, Scrip. Mater. 41 (2001) 1235÷1240
  • [17] Zięba P., Recent progress in the energy-depressive X-ray spectroscopy microanalysis of the discontinuous precipitation and discontinuous dissolution reactions, Mater. Chem. Phys. 62 (2000) 183÷313
  • [18] Tałach-Dumańska M., Zięba P. Pawłowski A., Wojewoda J., Gust W., Practical aspects of discontinuous precipitation and dissolution, Mater. Chem. Phys. 80 (2003) 476÷482
  • [19] Bradai D., Zięba P., Bischoff E., Gust W., Correlation between grain boundary misorientation and the discontinuous precipitation reaction in Mg-10 wt.% Al alloy, Mater. Chem. Phys. 78 (2002)222÷226
  • [20] Nie J.F., Xiao X.L., Luo C.P., Muddle B.C., Characterisation of precipitate phase in magnesium alloys using electron microdiffraction, Micron 32 (2001) 857÷863
  • [21] Bursik J., Svoboda M., A HREM and analytical STEM study of precipitates in an AZ91 magnesium alloy, Microchim. Acta 139 (2002)39÷42
  • [22] Cerri E., Barbagallo S., The influence of high temperature exposure on aging kinetics of a die cast magnesium alloy, Mater. Let. 56 (2002) 716÷720
  • [23] Braszczyńska K.N., Study of in aged Mg-Al-Zn alloy, Inter. Conf.: Advances in Metals and Processing Technologies AMPT, Dublin, Ireland, 8-11 July 2003, 1560÷1563
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ4-0013-0037
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