Abstract
The different yielding behaviors of annealed samples of Zr-Sn-Nb-Fe-Cu alloy and its dependence on microstructure have been studied. The yield drop was observed in samples with complete recrystallization, and this behavior gradually disappeared with the reduction of recrystallization degree. Meanwhile, as the strain rate increased, the yield point phenomenon (YPP) became less prominent in the stress-strain curves. It was assumed that solute-dislocation interaction mechanism and dislocation multiplication mechanism were responsible for this phenomenon. The unload-reload tests proved that the evolution of yielding behavior was caused by the increase of mobile dislocations with increasing pre-strain.
Published Version
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