Abstract
MgxYyGd (x+y=15 wt.%) alloys were produced via permanent mould casting to investigate the microstructure evolution during solidification of the ternary system. The microstructure of the assolidified samples was characterized with scanning electron microscopy (SEM) and transmission electron microscopy (TEM). In situ synchrotron radiation diffraction experiments were performed during the solidification of the alloys at the P07 (HEMS) Beamline of PETRA III at DESY. The phase evolution observed during controlled cooling at 20 and 100 K/min and the resultant microstructures were compared with the as-cast conditions. The experimental results were correlated with the calculations from the Pandat thermodynamic software. In the case of the ternary alloys the equilibrium phase diagram suggests the formation of the Mg24Y5 phase at elevated temperatures followed by the formation of the Mg5Gd phase at eutectic temperatures. However, the experiment shows only the formation of Mg24Y5 phase at eutectic temperatures even with a cooling rate (CR) of 100 K/min.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
L.L. Rokhlin, Magnesium Alloys Containing Rare Earth Metals, Structure and Properties, Taylor & Francis, (2003).
N. Hort, Y. Huang, D. Fechner, M. Störnier, C. Blawert, F. Witte, C. Vogt, H. Drücker, R. Willumeit, K.U. Kainer, F. Feyerabend; Acta Biomaterialia 6 (2010) 1714–1725.
F. Witte, N. Hort, C. Vogt, S. Cohen, R. Willumeit, K.U. Kainer, F. Feyerabend; Current Opinion in Solid State and Materials Science 12 (2008) 63–72.
F. Witte, Acta Biomaterialia 6 (2010) 1680–1692.
G. Barucca, R. Ferragut, F. Fiori, D. Lussana, P. Mengucci, F. Moria, G. Riotino, Acta Materialia 59 (2011) 4151–4158.
M. Giovannini, A. Saccone, R. Marazza, R. Ferro, Metallurgical and Materials Transactions A 26 (1995) 5–10.
J. Gröbner, R. Shmid-Fetzer, Scripta Materialia 63 (2010) 674–679.
Z. Du, C. Guo, C. Li, W. Zhang, Rare Metals 25 (2006) 492–500.
C. Guo, Z. Du, C. Li, International Journal of Materials Research 99 (2008) 650–668.
C. Guo, Z. Du, C. Li, Calphad: Computer Coupling of Phase Diagrams and Thermochemistry 32 (2008) 177–18.
F. Feyerabend, J. Fischer, J. Holtz, F. Witte, R. Willumeit, H. Drücker, C. Vogt, N. Hort, Acta Biomaterialia 6 (2010) 1834–1842.
T.B. Massalski, Binary Alloy Phase Diagrams, ASM International Materials Park (1990).
M. Giovannini, A. Saccone, H. Flandorfer, P. Rogl, R. Ferro, Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques 88 (1997) 372–378.
C. Guo, Z. Du, C. Li, Computer Coupling of phase Diagrams and Thermochemistry 31 (2007) 75–88.
W.J. Boettinger, J.A. Warren, C. Beckermann, A. Karma, Annual Review of Materials Research 32 (2002) 164–194.
Y.L. Liu, S.B. Kang; Journal of Materials Science 32 (1997) 1443–1447.
S.S. Babu, J.W. Elmer, J.M. Vitek, S.A. David, Acta Materialia 50 (2002) 4763–4781.
O. Shuleshova, D.H. Moritz, A. Voss, W. Löser, Intermetallics 19 (2011) 688–692
D. Tolnai, G. Szakács, G. Requena, A. Stark, N. Schell, K.U. Kainer, N. Hort, Materials Science Forum 765 (2013) 286–290.
D. Tolnai, C.L. Mendis, A. Stark, G. Szakács, B. Wiese, K.U. Kainer, N. Hort, Magnesium Technology 2013, 253–257.
D. Tolnai, C.L. Mendis, A. Stark, G. Szakács, B. Wiese, K.U. Kainer, N. Hort, Materials Letters 102–103 (2013) 62–64.
D. Tolnai, P. Townsend, G. Requena, L. Salvo, J. Lendvai, H.P. Degischer, Acta Materialia Volume 60 (2012) 2568–2577.
G. Szakacs, C.L. Mendis, D. Tolnai, A. Stark, N. Schell, H. Ovri, M. Wolff, K.U. Kainer, J. Gröbner, R. Schmid-Fetzer, N. Hort, Magnesium Technology 2015, 79–84
P. Staron, T. Fischer, T. Lippmann, A. Stark, S. Daneshpour, D. Schnubel, E. Uhlmann, R. Gerstenberger, B. Camin, W. Reimers, E. Eidenberger, H. Clemens, N. Huber, A. Schreyer, Advanced Engineering Materials 13 (2011) 658–663.
http://www.perkinelmer.com/pdfs/downloads/009299B_01%20PRD.pdf
Pearson’s Crystal Structure Database for Inorganic Compounds (on CD-ROM), Release 2014, Ed.: Pierre Villars and Karin Cenzual.
G. Szakacs, B. Wiese, C.L. Mendis, D. Tolnai, A. Stark, N. Schell, M. Nair, K.U. Kainer, N. Hort, Magnesium Technology 2014, 213–218.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 TMS (The Minerals, Metals & Materials Society)
About this chapter
Cite this chapter
Szakács, G. et al. (2016). As Solidified Microstructure Investigation of Mg15Y and MgxYyGd (x+y=15 wt.%) Ternary Alloys. In: Singh, A., Solanki, K., Manuel, M.V., Neelameggham, N.R. (eds) Magnesium Technology 2016. Springer, Cham. https://doi.org/10.1007/978-3-319-48114-2_7
Download citation
DOI: https://doi.org/10.1007/978-3-319-48114-2_7
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48620-8
Online ISBN: 978-3-319-48114-2
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)