EBSD Study of ZnAl25 Alloy Inoculated with ZnTi4 Master Alloy

Witold K. Krajewski; Alan Lindsay Greer

doi:10.4028/www.scientific.net/MSF.508.281

Paper Titles

Marangoni Convection and Fragmentation in LASER Treatment
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Effect of a Rotating Magnetic Field on the Solidified Structure of Al-Si Alloys
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On the Temperature Gradient Induced Interfacial Gradient Force, Acting on Precipitated Liquid Droplets in Monotectic Liquid Alloys
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Liquid-Metal Foams – Feasible In Situ Experiments under Low Gravity
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EBSD Study of ZnAl25 Alloy Inoculated with ZnTi4 Master Alloy
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Study of the Eutectoid Transformation in the As-Cast Spheroidal Graphite Cast Iron with 'in Situ' Dilatation Analysis – Method for Quality Control
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Ceramic Particle Dispersion Analysis in LASER Surface Alloying
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Investigation of Phenomena Taking Place in LASER Surface Alloying Steels of WC-Co
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Embedding of Ceramic Particles in Metals Using Different Techniques for Undercooling of Metallic Melts
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HomeMaterials Science ForumMaterials Science Forum Vol. 508EBSD Study of ZnAl25 Alloy Inoculated with ZnTi4...

EBSD Study of ZnAl25 Alloy Inoculated with ZnTi4 Master Alloy

Abstract:

The microstructure of cast Zn-25wt%Al alloy inoculated by addition of a Zn-4wt%Ti master alloy (ZnTi4) has been studied using scanning electron microscopy and electron back-scatter diffraction (EBSD). It is found that Ti(Al,Zn)₃ particles act as nucleation centres for grains of the primary solid solution of Zn in Al (α' phase). The Ti(Al,Zn)₃ particles evolve in melt from the TiZn₃ particles in the ZnTi4 master alloy. EBSD shows that α' phase dendrites are in the same crystallographic orientation as the Ti(Al,Zn)₃ particles on which they nucleate. It is also found that some of the Ti(Al,Zn)₃ particles do not have any well-defined crystallographic orientation relationship with the α' phase. These particles were probably pushed and then engulfed by growing α' grains which had already nucleated on other particles.

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Periodical:

Materials Science Forum (Volume 508)

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281-286

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.508.281

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Online since:

March 2006

Authors:

Witold K. Krajewski, Alan Lindsay Greer

Keywords:

Electron Backscatter Diffraction (EBSD), Heterogeneous Nucleation, Zinc Aluminium Alloy, Zn-Ti Master Alloy

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