Deformation behavior of cold-rolled and annealed Zr–1.5Nb and Zr–1.5Nb–S alloys

Ko, Sung H.; Hong, Sun Ig; Kim, K.T.; Jeong, Yong-Jin

doi:10.1016/j.jnucmat.2011.02.026

Cited by 4 publications

(1 citation statement)

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“…Email: yanghuilong@imr.tohoku.ac.jp studies were performed to optimize their concentrations in zirconium alloys. In parallel, the minor alloying addition in zirconium alloys also attracted many researchers' attention, for example, Fe, Cr, Cu, S, and so on [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Effects of molybdenum on microstructural evolution and mechanical properties in Zr–Nb alloys as nuclear fuel cladding materials

Yang

Abe

Kano

et al. 2015

Journal of Nuclear Science and Technology

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The Zr-Nb alloys were modified by doping of Mo as a minor alloying element to seek for the nuclear fuel cladding materials with better characteristics. The effects of Mo on microstructural evolution and mechanical properties in Zr-Nb alloys were systematically investigated and elucidated. Results showed that the martensitic microstructure, a mixture of lath martensites and lens martensites with internal twins, was observed in the alloys quenched from β-phase. Width of the lath martensite reduced with the increasing Mo concentration, and the volume fraction of lens martensite increased with increase in the Mo concentration. After final annealing, a new kind of precipitate, namely β-(Nb, Mo, Zr), was identified in the Mo-containing alloys. It was also found that Mo reduced the growth of the precipitates but increased their number density. Furthermore, Mo addition retarded the recrystallization process strongly and reduced the grain size significantly. In terms of the mechanical properties, Mo addition enhanced the yield strength and the ultimate tensile strength at room temperature, however decreased the ductility. The grain size strengthening was presumed as the greatest contributor in this system.

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Section: Introductionmentioning

confidence: 99%