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A nanocrystalline Ni–49.8at%Ti alloy with an average grain size of about 16nm was acquired by cold-drawing and low-temperature annealing. The stability of stress-induced martensite of the nanocrystalline NiTi alloy was investigated by a differential scanning calorimeter (DSC). The results show that stress-induced B19′ martensite was preserved when the samples were subjected to 14% and 16% prestrain...
A nano/ultrafine lamellar structure with micrometer-sized equiaxed grains has been produced in TiZr-based multicomponent alloys via severe plastic deformation followed by thermal annealing. The dual-morphology hierarchical structured TiZr shows a high ultimate tensile strength σ UTS ~1500MPa and a large plastic strain ε f ~7.2%, demonstrating a good combination of high strength and...
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