Effect of soaking time on the preparation of porous NiTi alloy during micro-forming fields activated sintering

Zhao, Dan and Yang, Yi and Liu, Jian and Yang, Gang and Qin, Yi and Yin, Deqiang (2015) Effect of soaking time on the preparation of porous NiTi alloy during micro-forming fields activated sintering. In: 4th International Conference on New Forming Technology (ICNFT 2015). MATEC Web of Conferences . EDP Sciences. ISBN 9782759818235

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Abstract

In this study, porous NiTi alloys have been successfully produced by fields-activated micro-sintering and forming technology under the pressure of 75 MPa at 1100∘C. The effects of soaking time on the porous NiTi alloys were investigated by analysing porosities, microstructures, and phase compositions of the produced alloys. The porosities of 41.2%, 38.8% and 47.2% are achieved at the soaking time of 2 min, 6 min and 10 min respectively. SEM examinations show that the pore size is varied with the soaking time and X-ray diffraction studies reveal that the main phases are NiTi, Ni3Ti and NiTi2.