Creep Behavior of Zr-1.5Nb-0.4Sn-0.1Fe-0.1Cu Alloy

Creep behavior of the Zr-1.5Nb-0.4Sn-0.1Fe-0.1Cu alloy sheet is investigated from 300°C to 400°C in the stress range from 50 MPa to 180 MPa along the rolling direction. The measured strain rates range from 8.8 × 10 −10 s −1 to 4.7 × 10 −7 s −1. The activation energies are estimated to assess the cre...

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Bibliographic Details
Published in:Acta mechanica solida Sinica 2008-08, Vol.21 (4), p.308-311
Main Authors: Kim, Ji Young, Na, Kwang Su, Kim, Yong Duck, Kim, Ji Hui, Lee, Kwon Yeong, Kim, Ki Nam, Kim, Seon Jin
Format: Article
Language:English
Subjects:
Classical Mechanics
creep
Engineering
nuclear cladding
Surfaces and Interfaces
Theoretical and Applied Mechanics
Thin Films
zirconium alloy
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Summary:Creep behavior of the Zr-1.5Nb-0.4Sn-0.1Fe-0.1Cu alloy sheet is investigated from 300°C to 400°C in the stress range from 50 MPa to 180 MPa along the rolling direction. The measured strain rates range from 8.8 × 10 −10 s −1 to 4.7 × 10 −7 s −1. The activation energies are estimated to assess the creep deformation mechanisms in this alloy. The strain rate is slightly di erent at low stress, while it shows a distinct di erence at high stresses. Stress exponents of this alloy increase with increasing applied stress at all testing temperatures. It is concluded that the creep deformation of the Zr-1.5Nb-0.4Sn-0.1Fe-0.1Cu alloy is controlled by the di usion creep at low stress region and by the climbing of dislocations at high stress region.
ISSN:0894-9166
1860-2134
DOI:10.1007/s10338-008-0835-0