Microstructural evaluation of ZrC reinforced Al-Cu matrix alloy composites fabricated by mechanical alloying and vacuum hot pressing

Hülya Kaftelen*, Necip Ünlü, Lütfi M. Öveçoǧlu, Hani Henein

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Kitap/Rapor/Konferans Bildirisinde BölümKonferans katkısıbilirkişi

Özet

In this work, Al-4wt.%Cu composites comprising two differently sized ZrC reinforcing particles (157 μm and 8 μm) were fabricated by high energy ball milling and vacuum hot pressing. Vacuum hot pressing experiments were carried out at 550°C under a pressure of 70 MPa on Al-4wt. %Cu composite powders ball milled for 3h. Effects of reinforcement size on the microstructural and physical properties of the composites were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy-dispersive spectrometry (EDS) techniques. Following vacuum hot pressing, approximately relative density values of 98 % were achieved for all hot pressed Al-4wt.%Cu composites. Highest microhardness values were measured for the hot pressed Al-4wt.%Cu composites containing the smallest sized ZrC reinforcing particles (8 μm). On the basis of analysis, in addition to the Al, ZrC and Al 2Cu phase reflections, a tetragonal Al7Cu2Fe phase was formed due to iron contamination from balls and/or vial in the metal matrix composite during MA process.

Orijinal dilİngilizce
Ana bilgisayar yayını başlığıTMS 2010 - 139th Annual Meeting and Exhibition - Supplemental Proceedings
Sayfalar189-196
Sayfa sayısı8
Yayın durumuYayınlandı - 2010
EtkinlikTMS 2010 - 139th Annual Meeting and Exhibition - Seattle, WA, United States
Süre: 14 Şub 201018 Şub 2010

Yayın serisi

AdıTMS Annual Meeting
Hacim2

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???event.eventtypes.event.conference???TMS 2010 - 139th Annual Meeting and Exhibition
Ülke/BölgeUnited States
ŞehirSeattle, WA
Periyot14/02/1018/02/10

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