中國(guó)有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 14 No. 3 June 2004 |
titanium matrix composites prepared by shock wave consolidation①
（State Key Laboratory for Mechanical Behavior of Materials,
Xi an Jiaotong University, Xi an 710049, China）
Abstract:Submicron-scale TiC particle reinforced titanium matrix composites(TMCs) were prepared by shock wave consolidation technique at detonation speed of 2 500 5 000 m/s. The microstructures were studied by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The compressive strength and hardness values of the composites were also determined. The results show that the composites have higher compressive yield strength and hard
ness values than hot-rolled pure titanium. Twins in the microstructure of TMCs show that titanium particles undergo plastic deformation during consolidation process. The fine grains with size less than 1μm often locate in the boundaries among the titanium particles. TiC particles seem to keep unchanged during the consolidation. These bring about the increase in strength and hardness for the composites. The detonation speed of 3 200 m/s is proper parameter for compacting powder
in the present work.
Key words: titanium matrix composites; mechanical properties; shock wave consolidation
