Fabrication of TiC and ZrC reinforced Al-4 wt%Cu composite droplets using impulse atomization

Hülya Kaftelen; Hani Henein; M. Lütfi Öveçoǧlu

doi:10.1177/0021998312443395

Fabrication of TiC and ZrC reinforced Al-4 wt%Cu composite droplets using impulse atomization

Hülya Kaftelen^*, Hani Henein, M. Lütfi Öveçoǧlu

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, Al-4 wt%Cu alloy and its composites reinforced with different initial particle sizes of ZrC (8 μm and 157 μm) and TiC (13 μm and 93 μm) were fabricated by impulse atomization, and the microstructure of composite and unreinforced alloy droplets were examined by scanning electron microscopy, x-ray diffraction and cell size analyses. Scanning electron microscopic observations of composite droplets indicated that fine ZrC particles (8 μm) were mostly clustered while the other composites of the present investigation were distributed rather uniformly within the fine microstructure of droplets. The relationship between the cell size and the amount of carbide particles reveals that the presence of carbide particles in the alloy powders yields a finer structure. This could be due to the role of the carbide particles as heterogeneous sites for nucleation and to some extent due to particle restricted growth of matrix cells during solidification.

Original language	English
Pages (from-to)	587-601
Number of pages	15
Journal	Journal of Composite Materials
Volume	47
Issue number	5
DOIs	https://doi.org/10.1177/0021998312443395
Publication status	Published - Mar 2013

Funding

The authors would like to express their gratitude to the State Planning Organization (DPT) for funding the project entitled “Advanced Technologies in Engineering” with the project number 001K120750 out of which the main infrastructure of the Particulate Materials Laboratories was founded. One of the authors (H. Kaftelen) gratefully acknowledges the Scientific and Research Council of Turkey (TÜBİTAK) for support through the International Research Fellowship and to the Natural Science and Engineering Research Council of Canada. Acknowledgements

Funders	Funder number
DPT	001K120750
Natural Science and Engineering Research Council of Canada
Scientific and Research Council of Turkey
TÜBİTAK
Devlet Planlama Örgütü

Keywords

Metal matrix composites
Microstructure
Rapid solidification

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Cite this

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title = "Fabrication of TiC and ZrC reinforced Al-4 wt%Cu composite droplets using impulse atomization",

abstract = "In this study, Al-4 wt%Cu alloy and its composites reinforced with different initial particle sizes of ZrC (8 μm and 157 μm) and TiC (13 μm and 93 μm) were fabricated by impulse atomization, and the microstructure of composite and unreinforced alloy droplets were examined by scanning electron microscopy, x-ray diffraction and cell size analyses. Scanning electron microscopic observations of composite droplets indicated that fine ZrC particles (8 μm) were mostly clustered while the other composites of the present investigation were distributed rather uniformly within the fine microstructure of droplets. The relationship between the cell size and the amount of carbide particles reveals that the presence of carbide particles in the alloy powders yields a finer structure. This could be due to the role of the carbide particles as heterogeneous sites for nucleation and to some extent due to particle restricted growth of matrix cells during solidification.",

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AU - Kaftelen, Hülya

AU - Henein, Hani

AU - Öveçoǧlu, M. Lütfi

PY - 2013/3

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N2 - In this study, Al-4 wt%Cu alloy and its composites reinforced with different initial particle sizes of ZrC (8 μm and 157 μm) and TiC (13 μm and 93 μm) were fabricated by impulse atomization, and the microstructure of composite and unreinforced alloy droplets were examined by scanning electron microscopy, x-ray diffraction and cell size analyses. Scanning electron microscopic observations of composite droplets indicated that fine ZrC particles (8 μm) were mostly clustered while the other composites of the present investigation were distributed rather uniformly within the fine microstructure of droplets. The relationship between the cell size and the amount of carbide particles reveals that the presence of carbide particles in the alloy powders yields a finer structure. This could be due to the role of the carbide particles as heterogeneous sites for nucleation and to some extent due to particle restricted growth of matrix cells during solidification.

AB - In this study, Al-4 wt%Cu alloy and its composites reinforced with different initial particle sizes of ZrC (8 μm and 157 μm) and TiC (13 μm and 93 μm) were fabricated by impulse atomization, and the microstructure of composite and unreinforced alloy droplets were examined by scanning electron microscopy, x-ray diffraction and cell size analyses. Scanning electron microscopic observations of composite droplets indicated that fine ZrC particles (8 μm) were mostly clustered while the other composites of the present investigation were distributed rather uniformly within the fine microstructure of droplets. The relationship between the cell size and the amount of carbide particles reveals that the presence of carbide particles in the alloy powders yields a finer structure. This could be due to the role of the carbide particles as heterogeneous sites for nucleation and to some extent due to particle restricted growth of matrix cells during solidification.

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KW - Rapid solidification

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Fabrication of TiC and ZrC reinforced Al-4 wt%Cu composite droplets using impulse atomization

Abstract

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Keywords

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