ROOM-TEMPERATURE MECHANICAL PROPERTIES OF TiAl+Ce ALLOYS

来源期刊：中国有色金属学报(英文版)1996年第3期

论文作者：Chen Shiqi Qu Xuanhui Huang Baiyun Lei Changming

文章页码：146 - 149

Key words：Ce;　TiAl alloy;　mechanical properties;　microstructures

Abstract: The microstructures and mechanical properties of the TiAl +xCe (x=0.002, 0.005, 0.010, 0.015, 0.020, mole fraction) alloys in annealing condition were investigated. The results showed that the strength and deflection of the TiAl alloys were obviously enhanced by adding a small amount of Ce (e.g 0.002 mole fraction). The analyses show that this improvement was due to the refinement of microstructures and the reduction of the oxygen content in the matrix caused by Ce. However excessive Ce would result in forming coarse particles and a lot of pores, thus lowering the mechanical properties.