The Mg–Zn–Si system: Constitutional properties and phase formation during mechanical alloying

The isothermal section of the Mg–Zn–Si system at 300 °C was determined through the characterization of annealed samples by means of scanning electron microscopy, electron probe microanalysis and X-ray powder diffraction. No ternary phases have been detected in this system at 300 °C. The Mg 2Si phase...

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Bibliographic Details
Published in:Intermetallics 2010-09, Vol.18 (9), p.1722-1728
Main Authors: De Negri, S., Skrobańska, M., Delfino, S., Saccone, A.
Format: Article
Language:English
Subjects:
A. Intermetallics, miscellaneous
A. Ternary alloy systems
B. Phase diagrams
B. Phase identification
Ball milling
Binary systems
Blends
C. Mechanical alloying and milling
Intermetallic compounds
Intermetallics
Magnesium
Magnesium compounds
Silicides
Solid state
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Summary:The isothermal section of the Mg–Zn–Si system at 300 °C was determined through the characterization of annealed samples by means of scanning electron microscopy, electron probe microanalysis and X-ray powder diffraction. No ternary phases have been detected in this system at 300 °C. The Mg 2Si phase was found to dissolve about 2 at.% Zn, changing its lattice parameter from a = 0.6347(4) nm to a = 0.6335(4) nm; the other binary phases do not form detectable solid solutions with the third element. Based on the results obtained on samples subjected to different thermal treatments a U-type invariant equilibrium is proposed to occur in the solid state at 350 
ISSN:0966-9795
1879-0216
DOI:10.1016/j.intermet.2010.05.009