Comparative processing-structure-property studies of Al-Cu matrix composites reinforced with TiC particulates

Hülya Kaftelen*, Necip Ünlü, Gültekin Göller, M. Lütfi Öveolu, Hani Henein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

101 Citations (Scopus)

Abstract

Effects of TiC content and size on the microstructure, density, hardness and wear resistance of Al-4 wt.% Cu matrix composites were investigated. Al-4 wt.% Cu matrix composites were fabricated using two main processing routes of powder metallurgy (PM) and casting. In the PM process, Al-4 wt.% Cu matrix alloy reinforced with 10 wt.% TiC particulates of two different average sizes (13 μm and 93 μm) were mechanically alloyed and sintered. In the second process, Al-4 wt.% Cu-xTiC (x = 5, 10, 15 and 20 vol.%) composites were fabricated using a flux-assisted casting. Both the wear resistance and the hardness of cast composites improved with TiC content. The sintered composite containing smaller TiC particles (0.6-3.5 μm) exhibited higher hardness than that reinforced with coarser TiC (0.8-5.6 μm) particles. However, the detachment of carbide particles from wear surfaces of the composite reinforced with TiC particles (0.6-3.5 μm) results in the deterioration of its wear resistance.

Original languageEnglish
Pages (from-to)812-824
Number of pages13
JournalComposites Part A: Applied Science and Manufacturing
Volume42
Issue number7
DOIs
Publication statusPublished - Jul 2011

Funding

This research has been supported by Istanbul Technical University, Research Fund under the Project Title “Investigation of Production, Microstructural and Physical Properties of AlCu Alloys Reinforced with TiC and ZrC” with the Project No. 32838. The authors wish to thank London and Scandinavian Metallurgical Co. Ltd. for supplying flux material. The authors are also grateful to Mrs. Çiğdem Çakır Konak for her help in the SEM investigations and research assistant Mert Günyüz for his help during the wear experiments. Further, we would like to express our gratitude to 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 Technological Research Council of Turkey (TUBITAK) for the financial support through the International Research Fellowship Fund.

FundersFunder number
DPT001K120750
TUBITAK
Devlet Planlama Örgütü
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu
Istanbul Teknik Üniversitesi32838

    Keywords

    • A. Metal matrix composites (MMCs)
    • B. Microstructures
    • B. Wear
    • E. Casting

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