Effect of Alloying Elements on the Reactive Sintering Behaviour of NiTi Alloy

Pavel Novák; Pavel Salvetr; Andrea Školáková; Miroslav Karlík; Jaromír Kopeček

doi:10.4028/www.scientific.net/MSF.891.447

Paper Titles

Long-Term Gamma Prime Phase Stability after Various Heat Treatment Conditions with Temperature Dropping during Solution Treatment in Cast Nickel Base Superalloy, Grade Inconel-738
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Effect of Long-Term Aging on Microstructural Restoration in Cast Nickel Base Superalloy, GTD-111
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Effect of Precipitation Aging Temperatures on Reheat Treated Microstructures and its Phase Stability after Long-Term Exposure in Cast Nickel Base Superalloy, Grade Inconel 738
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Temperature Dependent Yield Strength, Strain Hardening and Failure of the CoCrFeNiMnV_x High Entropy Alloys
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Effect of Alloying Elements on the Reactive Sintering Behaviour of NiTi Alloy
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Effects of Nickel and Chromium Additions on Microstructure of P/M 316L Stainless Steels
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Microstructure and Erosion Resistance of Zirconium Diboride Ceramics Infiltrated by Pure Copper
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Microstructure Evaluation of Ceramic Materials Used in the Generation IV Reactors
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Microstructure Characterization of La-Ca-Sr-Mn-O Magnetocaloric Ceramics Prepared by Spark Plasma Sintering Method
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HomeMaterials Science ForumMaterials Science Forum Vol. 891Effect of Alloying Elements on the Reactive...

Effect of Alloying Elements on the Reactive Sintering Behaviour of NiTi Alloy

Abstract:

NiTi alloy is usually prepared by casting and forming. As an innovative process, reactive sintering powder metallurgy is tested worldwide, aiming to prepare pure NiTi alloy easily from nickel and titanium powders. This process enables to prepare both porous and low-porosity alloy, depnding on the process conditions. However, the formation of NiTi phase in this process is always accompanied by the Ti₂Ni phase, which is hard, brittle, less corrosion resistant and does not have the shape memory. In this work, various alloying elements (Al, Si, Mg, Fe, Nb, V) were added to Ni-Ti alloy in order to lower the amount of Ti₂Ni phase or at least to minimize its undesirable effect on the alloy properties. The reactive sintering behaviour, phase composition and mechanical properties of Ni-Ti-X alloys were described.

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Periodical:

Materials Science Forum (Volume 891)

Pages:

447-451

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.891.447

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Online since:

March 2017

Authors:

Pavel Novák*, Pavel Salvetr, Andrea Školáková, Miroslav Karlík, Jaromír Kopeček

Keywords:

NiTi Alloy, Powder metallurgy, Reactive Sintering, Shape Memory

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References

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