High Damping Performance of Hydrogenated Bulk Metallic Glasses

Abstract:

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Hydrogenated Zr-Cu-base metallic glasses (MGs) are the potential high-damping and high-strength materials. On the other hand, the knowledge on the material parameters which govern the peak temperature, Tp, and the peak height, Q-1 p, of the hydrogen internal friction peak (HIFP) remains poor. In order to pursue this issue, the hydrogen concentration dependence of Tp and Q-1 p in the Zr-Cu-base MGs were investigated in the point of view of the hydrogen induced structural relaxation (HISR). It is found that the Tp vs. CH data and the Q-1 p vs. CH data are well fitted by the relationships of Tp = Tp exp(-CH/τH) +Tp,0 and Qp -1 ∝ ln(CH/τH), respectively, for various Zr-Cu-base MGs including bulk MGs, Zr55Cu30Al10Ni5 and Zr60Cu30Al10. That is, the observed relationship between Tp and CH is mainly governed by HISR. It is suggested that Tp,0 in Zr-Cu-base MGs is the highest among various MGs resulting in the highest Tp in Zr-Cu-base MGs. In other words, the control of Tp,0 is the key issue to find the high-Tp MGs.

Info:

Periodical:

Edited by:

N. Igata and S. Takeuchi

Pages:

133-138

DOI:

10.4028/www.scientific.net/KEM.319.133

Citation:

H. Mizubayashi, K. Yamagishi, H. Tanimoto, "High Damping Performance of Hydrogenated Bulk Metallic Glasses", Key Engineering Materials, Vol. 319, pp. 133-138, 2006

Online since:

September 2006

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Price:

$35.00

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