One of the issues that modern implants face is their high stiffness, coupled with a positive Poisson’s ratio along implant. This creates certain problems bone inflammation and implant detachment. A possible solution to these TiNi alloy lattice structure low stiffness negative ratio. paper presents results simulation, fabrication by SLM technique, study structures ratio, which can help solve sai...

intermetallic phase formation and oxidation reaction during combustion synthesis (cs) of ni-ti equiatomic mixture are affected by mechanical activation (ma) and pre-heating conditions. important parameters are ignition time, reaction duration, temperature rise, microstructural change, titanium oxidation and intermetallic phase formation. superelasticity and shape memory effects are influenced b...

Abstract The negative stiffness exhibited by bi-stable mechanisms together with the tunable superelasticity offered shape memory alloy (SMA) wires can enhance dynamic resilience of a structure in context vibration isolation. effects and superelastic damping base-isolated structures are here explored carrying out an extensive study nonlinear response via pathfollowing, bifurcation analysis, time...

The phase transformation, microstructural and mechanical properties of Ti-15V-2Al high temperature shape memory alloy produced with arc-melting method were investigated by DSC, XRD, SEM micro-indenter system. reverse martensitic transformation As starting Af finishing temperatures obtained to be 195 °C 285 °C, respectively. In microindentation analysis, the subjected indentation tests under 500...

Effects of post-aging cooling rate (water quenched, WQ, and furnace cooled, FC) on the shape memory properties polycrystalline Ni45.3Ti34.7Hf15Pd5 alloys were studied. Their functional such as transformation temperatures, hysteresis, elastic energy, superelastic behavior recoverable strain found to be closely related rate. Martensite start temperature decreased from 77 °C for WQ sample 22 FC sa...

Abstract Nitinol became one of the most prominent materials for biomedical devices. The unique properties such as shape memory effect and superelasticity enabled new applications, particularly in field stent technologies. Due to their thermosensitivity, manufacturing processes are required that control heat accumulation material. Here we investigate femtosecond laser ablation supported by a wat...

Abstract Iron-based shape memory alloys came into focus as promising candidate materials for large-scale structural applications owing to their cost-efficiency. In the present work, superelastic properties of a recently introduced Fe-Ni-Co-Al-Ti-Nb alloy are investigated. For 〈001〉-oriented single-crystalline material in aged condition (650 °C/6 h), an incremental strain test reveals excellent ...

Shape memory alloys have two unique properties of shape effect (SME) and superelasticity (SE) that are the ability for large inelastic deformations recovery after heating stress removal (SE). In recent years, structural engineers used these materials in field civil engineering’s, such as applications SMAs repair, retrofitting, rehabilitation concrete structures, dampers, vibration isolation sys...

In recent years, superelastic alloys have become a current research hotspot due to the large recoverable deformation, which far exceeds elastic recovery. This will create more possibilities in practical applications. At present, are widely used fields of machinery, aerospace, transmission, medicine, etc., and smart materials with great potential. Among alloys, Fe-based advantages low cost, easy...