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Acta Mechanica Solida Sinica

, Volume 21, Issue 4, pp 308–311 | Cite as

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

  • Ji Young Kim
  • Kwang Su Na
  • Yong Duck Kim
  • Ji Hui Kim
  • Kwon Yeong Lee
  • Ki Nam Kim
  • Seon Jin Kim
Article

Abstract

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 different at low stress, while it shows a distinct difference 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 diffusion creep at low stress region and by the climbing of dislocations at high stress region.

Key Words

creep zirconium alloy nuclear cladding 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2008

Authors and Affiliations

  • Ji Young Kim
    • 1
  • Kwang Su Na
    • 2
  • Yong Duck Kim
    • 1
  • Ji Hui Kim
    • 1
  • Kwon Yeong Lee
    • 1
  • Ki Nam Kim
    • 1
  • Seon Jin Kim
    • 1
  1. 1.Division of Advanced Materials Science and EngineeringHanyang UniversitySeoulKorea
  2. 2.Technical Research Center, Sheet Products Design TeamHyundai Steel CompanyDangjin-Gun, ChungnamKorea

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