ORAL
| SESSION: AdvancedMaterialsTueAM-R8 | Marquis International Symposium on New and Advanced Materials and Technologies for Energy, Environment and Sustainable Development(3rd Intl Symp. on New and Advanced Materials and Technologies for Energy, Environment and Sustainable Development) |
| Tue Oct, 24 2017 | Room: Maria Luisa & Maria Fernanda |
| Session Chairs: Nikoloz Chikhradze; Session Monitor: TBA |
11:00: [AdvancedMaterialsTueAM01]
Synthesis and Mechanical Alloying of Ti-Al-B-C Powders Mikheil
Chikhradze1 ;
Fernand
Marquis2 ;
Nikoloz
Chikhradze3 ;
1Georgian Technical University, Tb ilisi, Georgia;
2San Diego State University, Department of Mechanical Engineering, San Diego, United States;
3LEPL Grigol Tsulukidze Mining Institute/Georgian Technical University, Tbilisi, Georgia;
Paper Id: 74
[Abstract] Composites, fabricated in Ti-Al-B-C systems are characterized by unique physical and mechanical properties. They are attractive for aerospace, power engineering, machine, and chemical applications. In addition, aluminum matrix composites (AMCs) have great potential as structural materials due to their excellent physical, mechanical, and tribology properties.
The coarse crystalline Ti, Al, C powders and amorphous B were used as precursors. Blends with different compositions of Ti, Al and C were prepared. Determination and selection of blend compositions were made on the base of phase diagrams.
The powders were mixed according the selected ratios of components to produce the blend. Blends were processed in high energetic “Fritsch” Planetary premium line ball mill for homogenization, mechanical alloying, syntheses of new phases, and ultrafine particles formation. The blends’ processing time was variable and fluctuated between 1 to 10 hours. The optimal technological regimes of blend preparation were determined experimentally. Ball milled blends were investigated in order to determine properties after milling and mechanical alloying. Ultrafine bland were consolidated using explosive compaction technology.
The paper also includes: the peculiarities of the milling process; shock compaction of compositions described above; optimal technological parameters for dry mechanical alloying, explosive compaction, and formation of bulk ultrafine-grained composites; and synthesis of new phases.
