| Title |
Mechanical Properties and Fabrication of Nanostructured 1.5TiAl-Al2O3 Composite by Pulsed Current Activated Sintering |
| Authors |
김원백(Won Baek Kim); 왕희지(Hee Ji Wang); 노기민(Ki Min Roh); 조성욱(Sung Wook Cho); 임재원(Jae Won Lim); 손인진(In Jin Shon) |
| DOI |
https://doi.org/10.3365/KJMM.2012.50.4.310 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
compound; nanostructure; sintering; mechanical properties |
| Abstract |
Nano-powders of 1.5TiAl and Al2O3 were synthesized from 1.5TiO2 and 3Al powders by high energy ball milling. Nanocrystalline Al2O3 reinforced composite was consolidated by pulsed current activated sintering within 2 minutes from mechanochemically synthesized powders of Al2O3 and 1.5TiAl. The relative density of the composite was 99.5%. The average hardness and fracture toughness values obtained were 1250 kg/mm2 and 10 MPa·m1/2, respectively. |