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Item type:Publication, Access status: without files , Tuning microstructure and mechanical properties of open porous TiNb and TiFe alloys by optimization of dealloying parameters(2018-09); ; ; Here, we developed open porous TiFe and TiNb alloys by liquid metal dealloying. Tuning dealloying parameters allows controlling phase formation and microstructure of the resulting structures. Particularly, α″ martensite together with β-Ti and single phase β-Ti form in TiNb obtained by dealloying of its precursor at 1073 K and 1173 K, respectively. The yield strength of porous TiFe reaches up to 150 MPa. Impregnation by polymers of porous alloys leads to further increasing of their yield strength up to 260 MPa. Remarkably, the Young's modulus of the materials studied remains below 5.2 GPa irrespective of the achieved strength.Publicationtype: Journal Article227 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Dealloying-based metal-polymer composites for biomedical applications(2018-03-15); ; ; ; Here, we developed interpenetrating-phase metal-polymer composites mimicking mechanical behavior of cortical bone and occupying previously unclaimed region at the Ashby diagram in the area of intermediate strength and low stiffness. The composites consist of dealloying-based open porous TixHf100 − x alloys (scaffolds) impregnated by polymer. The scaffolds significantly contribute to strength (215–266 MPa) and stiffness (15.6–20.8 GPa) of the composites while the polymer phase provides their high strain rate sensitivity (0.037–0.044). Tuning scaffolds' connectivity by preloading and/or their chemical composition allows fine optimization of composites' mechanical properties. The results suggest that the composites may provide a basis for promising future implant materials.Publicationtype: Journal Article149