Nanomechanical Characterization of Temperature-Dependent Mechanical Properties of Ion-Irradiated Zirconium with Consideration of Microstructure and Surface Damage

Jonathan Marsh, Yang Zhang, Devendra Verma, Sudipta Biswas, Md Amanul Haque, Vikas Tomar

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Zirconium alloys for nuclear applications with different microstructures were produced by manufacturing processes such as chipping, rolling and annealing. The two Zr samples, rolled and rolled-annealed were subjected to different levels of irradiation, 1 keV and 100 eV, to study the effect of irradiation dosages. The effect of microstructure and irradiation on the mechanical properties (reduced modulus, hardness, indentation yield strength) was analyzed with nanoindentation experiments, which were carried out in the temperature range of 25°C to 450°C to investigate temperature dependence. An indentation size effect analysis was performed and the mechanical properties were also corrected for the oxidation effects at high temperatures. The irradiation-induced hardness was observed, with rolled samples exhibiting higher increase compared to rolled and annealed samples. The relevant material parameters of the Anand viscoplastic model were determined for Zr samples containing different level of irradiation to account for viscoplasticity at high temperatures. The effect of the microstructure and irradiation on the stress–strain curve along with the influence of temperature on the mechanisms of irradiation creep such as formation of vacancies and interstitials is presented. The yield strength of irradiated samples was found to be higher than the unirradiated samples which also showed a decreasing trend with the temperature.

Original languageEnglish (US)
Pages (from-to)2945-2958
Number of pages14
JournalJOM
Volume67
Issue number12
DOIs
StatePublished - Dec 1 2015

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Zirconium
Irradiation
Ions
Mechanical properties
Microstructure
Temperature
Indentation
Yield stress
Hardness
Viscoplasticity
Zirconium alloys
Nanoindentation
Vacancies
Creep
Annealing
Oxidation
Experiments

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

Cite this

Marsh, Jonathan ; Zhang, Yang ; Verma, Devendra ; Biswas, Sudipta ; Haque, Md Amanul ; Tomar, Vikas. / Nanomechanical Characterization of Temperature-Dependent Mechanical Properties of Ion-Irradiated Zirconium with Consideration of Microstructure and Surface Damage. In: JOM. 2015 ; Vol. 67, No. 12. pp. 2945-2958.
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Nanomechanical Characterization of Temperature-Dependent Mechanical Properties of Ion-Irradiated Zirconium with Consideration of Microstructure and Surface Damage. / Marsh, Jonathan; Zhang, Yang; Verma, Devendra; Biswas, Sudipta; Haque, Md Amanul; Tomar, Vikas.

In: JOM, Vol. 67, No. 12, 01.12.2015, p. 2945-2958.

Research output: Contribution to journalArticle

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