The multidirectional forging with different passes was carried out. The change of the distribution of grain size and second phase of Ni Ti Nb9 alloy, and the effect of the change on the hardness and shape memory effect were investigated.The results show that after the multidirectional forging with different passes, the microstructure and the hardness of the Ni Ti Nb9 alloy change. The hardness of the alloy increases with the multidirectional forging pass increasing. After the multidirectional forging with three passes, the alloy grains are fibrous, the grain size is the smallest, the second phase distribution is the most homogeneous, and the shape memory effect is the best.
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维普
万方数据
