Manufacturing Technology 2017, 17(4):576-579 | DOI: 10.21062/ujep/x.2017/a/1213-2489/MT/17/4/576

Alloying by Magnesium: A Route How to Eliminate the Amount of Ti2Ni Phase in Ni-Ti Alloy

Andrea Školáková, Pavel Salvetr, Pavel Novák
University of Chemistry and Technology in Prague, Department of Metals and Corrosion Engineering, Technická 5, 166 28 Prague 6, Czech Republic

This article offers completely new results in the research of NiTi alloys produced by Self-propagating High-temperature Synthesis (SHS). There is investigated the effect of addition of magnesium on the microstructure, phase composition and especially, the amount of undesirable Ti2Ni phase. This phase is unwanted in NiTi alloy because of its brittleness. Moreover, this one is stabilized by oxygen and forms during SHS process. Selected preparation method is considered as an alternative to the melting metallurgy, which produced products with poor homogeneity and purity. For this reason, SHS process has been studied intensely and many researchers have tried to eliminate secondary phases unsuccessfully. Our research showed that alloying by element with high affinity to oxygen causes disappearance of Ti2Ni phase.

Keywords: Ti2Ni phase, Self-propagating High-temperature Synthesis, Ni-Ti-Mg alloy

Published: September 1, 2017  Show citation

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Školáková A, Salvetr P, Novák P. Alloying by Magnesium: A Route How to Eliminate the Amount of Ti2Ni Phase in Ni-Ti Alloy. Manufacturing Technology. 2017;17(4):576-579. doi: 10.21062/ujep/x.2017/a/1213-2489/MT/17/4/576.
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