制备原位纳米氧化物颗粒增强普碳钢

In this paper,a large number of in-situ nano-oxide particles were produced by using vacuum melting and adding micro-alloying element Ti through the way of "Area Trace Supply" and controlling oxygen content during casting.And effect of the nano-oxide particles on the microstructure and properties of the reinforced steel was investigated by SEM,TEM and HRTEM.The result showed that this can refine grains in the steel and improve strength of the steel greatly.These nano-particles present a coherent or semi-coherent relationship with matrix which will not only greatly improve the strength of the material but also without sacrificing plasticity and toughness too much.