Effect of Extrusion Pass on Microstructure and Transformation Temperature of NiTiNb Alloy

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Abstract:

In this research, the Effect of extrusion pass on microstructure and transformation temperature of NiTiNb alloy was researched. The results shows that ECAP can efficiently break the hard and brittle (Ti, Nb)2Ni phase. At the same time, β-Nb phase particles were precipitated and grow up after ECAP process.Due to enhancement of interfacial energy, train energy and non-chemical free energy, transformation temperatures including: As, Af, Ms and Mf increases with extrusion pass.

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4347-4350

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November 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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