摘要
The microstructure, compression property and work-hardening effect of the NiAl-matrix composite reinforced by 5 vol.%ceramic particulates (TaB and TaB2) were investigated. The compression properties and work-hardening capacity (Hc) under the different strain rates were also investigated. The NiAl-matrix composite has strong strain rate sensitivity. A high true ultimate strength of 1399聽MPa, a true fracture strain of 18.7%and Hc聽=聽1.84 were obtained under the strain rate of 1.0聽脳聽10鈭?聽s鈭?. The good compression properties may be attributed to the refinement of the grain size and the good combination between the ceramic particulates and the NiAl-matrix.