Mechanical Properties and Fabrication of Nanostructured Ti3Al-Al2O3 Composite from Mechanically Synthesized Powders by Pulsed Current Activated Sintering

作者：Shon In Jin^*; Wang Hee Ji; Suh Chang Yul; Cho Sung Wook; Kim Wonbaek

来源：Journal of the Korean Institute of Metals and Materials, 2011, 49(5): 374-379.

DOI：10.3365/KJMM.2011.49.5.374

• compound
• nanostructure
• sintering
• mechanical properties

Nano-powders of Ti3Al and 2Al(2)O(3) were synthesized from 3TiO(2) and 5Al powders by high energy ball milling A nanocrystalline Al2O3 reinforced composite was consolidated by pulsed current activated sintering within 2 minutes from mechanochemically synthesized powders of Al2O3 and Ti3Al. Nanocrystalline materials, have received much attention as advanced engineering materials due to their improved physical and mechanical properties. The relative density of the composite was 99.5%. The average obtained hardness and fracture toughness values were 1510 kg/mm(2) and 9 MPa.m(1/2), respectively.

• 出版日期2011-5