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Title: Effect of Thermal Cycling on Martensitic Transformation Characteristics of (Ni47Ti44)100-xNbx Shape Memory Alloys

Abstract

(Ni47Ti44)100-xNbx (x=3, 9, 15, 20, 30at.%) shape memory alloys are prepared and their transformation temperatures and transformation latent heats under conditions of various thermal cycling times are systematically investigated by differential scanning calorimeter (DSC). It is found that the martensitic transformation behavior in the experimented alloys are strong influenced by the Nb-content and thermal cycling times. The results showed that the transformation temperatures of experimented alloys decreased with increase of the cycling number, and the lower the Nb-content in the (Ni47Ti44)100-xNbx alloy, the more the Ms temperature decreased. With increasing of the thermal cycling times, the martensitic transformation latent heats ( {delta} H B2{yields}B19' ) and the reverse transformation latent heats ({delta} H B19'{yields}B2) of (Ni47Ti44)100-xNbx alloys all linearly decrease, but the decrease amplitude is not high.

Authors:
; ; ;  [1]
  1. Institute of Metal Research, Chinese Academy of Science, Shenyang, 110016 (China)
Publication Date:
OSTI Identifier:
20800159
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 824; Journal Issue: 1; Conference: Cryogenic engineering conference, Keystone, CO (United States), 29 Aug - 2 Sep 2005; Other Information: DOI: 10.1063/1.2192328; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CALORIMETRY; CONCENTRATION RATIO; HEAT; NICKEL ALLOYS; NIOBIUM ALLOYS; PHASE TRANSFORMATIONS; SHAPE MEMORY EFFECT; THERMAL CYCLING; TITANIUM ALLOYS

Citation Formats

He, X. M., Yan, D. S., Rong, L. J., and Li, Y. Y. Effect of Thermal Cycling on Martensitic Transformation Characteristics of (Ni47Ti44)100-xNbx Shape Memory Alloys. United States: N. p., 2006. Web. doi:10.1063/1.2192328.
He, X. M., Yan, D. S., Rong, L. J., & Li, Y. Y. Effect of Thermal Cycling on Martensitic Transformation Characteristics of (Ni47Ti44)100-xNbx Shape Memory Alloys. United States. doi:10.1063/1.2192328.
He, X. M., Yan, D. S., Rong, L. J., and Li, Y. Y. Fri . "Effect of Thermal Cycling on Martensitic Transformation Characteristics of (Ni47Ti44)100-xNbx Shape Memory Alloys". United States. doi:10.1063/1.2192328.
@article{osti_20800159,
title = {Effect of Thermal Cycling on Martensitic Transformation Characteristics of (Ni47Ti44)100-xNbx Shape Memory Alloys},
author = {He, X. M. and Yan, D. S. and Rong, L. J. and Li, Y. Y.},
abstractNote = {(Ni47Ti44)100-xNbx (x=3, 9, 15, 20, 30at.%) shape memory alloys are prepared and their transformation temperatures and transformation latent heats under conditions of various thermal cycling times are systematically investigated by differential scanning calorimeter (DSC). It is found that the martensitic transformation behavior in the experimented alloys are strong influenced by the Nb-content and thermal cycling times. The results showed that the transformation temperatures of experimented alloys decreased with increase of the cycling number, and the lower the Nb-content in the (Ni47Ti44)100-xNbx alloy, the more the Ms temperature decreased. With increasing of the thermal cycling times, the martensitic transformation latent heats ( {delta} H B2{yields}B19' ) and the reverse transformation latent heats ({delta} H B19'{yields}B2) of (Ni47Ti44)100-xNbx alloys all linearly decrease, but the decrease amplitude is not high.},
doi = {10.1063/1.2192328},
journal = {AIP Conference Proceedings},
number = 1,
volume = 824,
place = {United States},
year = {Fri Mar 31 00:00:00 EST 2006},
month = {Fri Mar 31 00:00:00 EST 2006}
}
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