Effect of Cooling Rate on the Transformation Temperatures of Ni50Ti36Hf14 Melt-Spun Ribbons

R.L. Soares; Walman Benicio Castro

doi:10.4028/www.scientific.net/MSF.930.345

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Effect of Cooling Rate on the Transformation Temperatures of Ni₅₀Ti₃₆Hf₁₄ Melt-Spun Ribbons
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HomeMaterials Science ForumMaterials Science Forum Vol. 930Effect of Cooling Rate on the Transformation...

Effect of Cooling Rate on the Transformation Temperatures of Ni₅₀Ti₃₆Hf₁₄ Melt-Spun Ribbons

Abstract:

Solidification structures and shape memory characteristics of Ni₅₀Ti₃₆Hf₁₄ (at.%) alloy ribbons prepared by melt spinning were investigated by means of differential scanning calorimetry and X-ray diffraction. In these experiments particular attention has been paid to change the velocity of cooling wheel from 20 to 40 m/s. Then the cooling rates of ribbons were controlled. The effect of this cooling rate on solidification structures and martensitic transformation behaviors is discussed. When the ribbon is produced at a wheel velocity of 40 m/s in melt spinning, the degree of supercooling becomes high because of its thinner thickness.

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22nd Brazilian Conference on Materials Science and Engineering

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Materials Science Forum (Volume 930)

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345-348

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https://doi.org/10.4028/www.scientific.net/MSF.930.345

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Online since:

September 2018

Authors:

R.L. Soares, Walman Benicio Castro*

Keywords:

Melt Spinning, Shape Memory Alloys, Ti-Ni-Zr Alloy Ribbons

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