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Effects of Heat Treatment on Corrosion of Zr-1.0Nb-1.0Sn-0.1Fe
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Creep Resistance of Zr-Sn-Nb-Fe-Cr Alloy

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Abstract:

The creep resistance of one kind of Zirconium based alloy with Niobium, Iron, Chromium , Tin alloying elements was investigated, the creep curve ( e-t) was obtained in stress levels of 117MPa 、137MPa、157MPa respectively by holding 200 hours at 400°C. The results show that the creep resistance of this alloy is much better than that of Zircaloy-4. The microstructure of post- creep test was observed by TEM, which shows that the dislocation morphology is changed from dislocation lines to dislocation cells with strain increasing , and some precipitates grow larger. It is concluded that the creep is controlled by dislocation climb-glide diffusion mechanism.

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Periodical:

Materials Science Forum (Volumes 475-479)

Pages:

1405-1408

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.475-479.1405

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Online since:

January 2005

Authors:

Zhongkui Li, Wen Sheng Wang, J.J. Zhang, Lian Zhou

Keywords:

Creep, Dislocation Cell, Precipitation, Zirconium-Based Alloy

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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References

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