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precipitates, the present Ni-rich LCI entities are unique to increase the resistance against dislocation slip, facilitate stress-induced martensitic transformation, and most importantly, relieve local stress concentration around micro-pore defects and entity interfaces. This specialized microstructure endows tensile superelasticity, i.e., tensile ultimate strength of 958.7 MPa, total tensile elongation of 11.2%, superelastic strain exceeding 7%, and superior cyclic stability. The results advance our capabilities in fabricating high-performance superelastic SMAs with complex geometries through additive manufacturing and LCI engineering.
Li et al. (Mon,) studied this question.
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