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Mechanical property of nano-TiO2 dispersed Al65Cu20Ti15 amorphous/nanocrystalline matrix bulk composite prepared by mechanical alloying and high pressure sintering

Debdas Roy 1Rahul Mitra 1,2Tadeusz Chudoba 2Zbigniew Witczak 2Witold Łojkowski 2Hans-Jörg Fecht 3Indranil Manna 1

1. Indian Institute Of Technology,Kharagpur (IIT), Kharagpur, India
2. Polish Academy of Sciences, Institute of High Pressure Physics (UNIPRESS), Sokolowska 29/37, Warszawa 01-142, Poland
3. Ulm University, Albert-Einstein-Allee 47, Ulm 89081, Germany


Mechanically alloyed Al65Cu20Ti15 amorphous alloy powder with 10 wt.% nano-TiO2 dispersion was consolidated by high pressure sintering (HPS) at room temperature and/or 300-450oC for about 1 min using 8 GPa uniaxial pressure. Sintering was followed by XRD and TEM. Excellent mechanical properties of 8.34 GPa hardness and 1600 MPa compressive stress were obtained in a selected sintered samples, albeit poor ductility (<1%).


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Presentation: Oral at E-MRS Fall Meeting 2007, Acta Materialia Gold Medal Workshop, by Indranil Manna
See On-line Journal of E-MRS Fall Meeting 2007

Submitted: 2007-05-20 12:12
Revised:   2009-06-07 00:44