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Effects of Hydrogen Absorption on the Mechanical Properties of Zr-Nb Alloys

Published online by Cambridge University Press:  01 February 2011

Shunichiro Nishioka ,
Masato Ito ,
Hiroaki Muta ,
Masayoshi Uno  and
Shinsuke Yamanaka
Shunichiro Nishioka
Affiliation:
nishioka@ms.see.eng.osaka-u.ac.jp, Osaka University, Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, 2-1, Yamadaoka, Suita, Osaka, 565-0871, Japan, +81-6-6879-7905, +81-6-6879-7889
Masato Ito
Affiliation:
ito@ms.see.eng.osaka-u.ac.jp, Osaka University, Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, 2-1, Yamadaoka, Suita, Osaka, 565-0871, Japan
Hiroaki Muta
Affiliation:
muta@see.eng.osaka-u.ac.jp, Osaka University, Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, 2-1, Yamadaoka, Suita, Osaka, 565-0871, Japan
Masayoshi Uno
Affiliation:
uno@see.eng.osaka-u.ac.jp, Osaka University, Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, 2-1, Yamadaoka, Suita, Osaka, 565-0871, Japan
Shinsuke Yamanaka
Affiliation:
yamanaka@see.eng.osaka-u.ac.jp, Osaka University, Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, 2-1, Yamadaoka, Suita, Osaka, 565-0871, Japan
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Abstract

Young's moduli of hydrogenated Zr-Nb alloys were evaluated by using a multiple elastometer in the temperature range from room temperature to 773 K, based on the cantilever characteristic vibration technique. The decreasing rate of Young's modulus against the temperature was independent on the additive amount of Nb. The Young's modulus for the hydrogen solid solution of Zr-Nb alloys decreased and that those for the alloys with partially precipitated hydride slightly changed with increasing hydrogen content in both of Zr-1.0Nb and Zr-2.5Nb. The decreasing rates with hydrogen content of hydrogen solid solution of Zr-Nb alloys were almost same as that of Zr hydrogen solid solution. This result was considered because all specimens largely consisted of α-zirconium in which the solute hydrogen was found to decrease the Young's modulus.

Keywords

ZrNbelastic properties
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1043: Symposium T – Materials Innovations for Next-Generation Nuclear Energy , 2007 , 1043-T09-08
Copyright
Copyright © Materials Research Society 2008

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