STRUCTURE AND PROPERTIES OF SINTERED TITANIUM ALLOYED WITH ALUMINUM, MOLYBDENUM AND OXYGEN

Titanium alloys of Ti-Al-Mo-O system were manufactured by blended elem ental powder method using Ti, Al, Mo and TiO2 powders as starting mate rials. It was found that cold compaction pressure of 800 MPa followed by sintering at 1150-1200 degrees C, for 4 h provided sufficient densi fication of titanium materials. Complete dissolution of alloying eleme nts in the titanium matrix resulted in a good combination of mechanica l properties. Examples of alloys chosen for possible application were Ti-(1.5-2.0)%Mo-0.7%TiO2 and Ti-2%Al-2%Mo. The latter has already been tried for manufacturing parts in automotive industry. (C) 1998 Elsevi er Science S.A. All rights reserved.