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We report the formation of deformation twins in a nanocrystalline Cu–25at.% Ni alloy with medium stacking fault energy via the propagation of Σ3{112} incoherent twin boundaries (ITBs) that are nucleated from grain boundaries. This deformation twinning process does not generate net macroscopic strain since the Burgers vectors of the three partial dislocations on three successive {111} planes comprising...
The effects of high-temperature pre-precipitation treatment on the microstructure, age-hardening, stress corrosion cracking, inter-granular corrosion and exfoliation corrosion of Al–Zn–Mg alloy have been investigated. High-temperature pre-precipitation can enhance the distribution discontinuity of grain boundary precipitates, increase the Cu content in grain boundary precipitates and lead to the increase...
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