Indentation plastic work and large compression plasticity in in situ nanocrystallized Zr62Cu18Ni10Al10 bulk metallic glass

Fornell, Jordina; Suriñach, S.; Baró, Maria Dolores; Sort, Jordi

doi:10.1016/j.jallcom.2010.12.045

Cited by 2 publications

(2 citation statements)

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“…where U el is obtained from the area enclosed between the unloading segments and displacement axis. [37][38][39] The elastic recovery and plasticity index were evaluated from the U el / U tot and U pl /U tot ratios, respectively. The mechanical and elastic properties were compared with those of commercial Ti-40Nb alloy.…”

Section: Methodsmentioning

confidence: 99%

“…The total mechanical work done by the indenter during loading, U tot , was calculated from the area enclosed between the loading indentation segment and the displacement axis. This energy is the sum of the elastic, U el , and the plastic, U pl , energies:

U_{tot} = U_{el} + U_{pl}

where U el is obtained from the area enclosed between the unloading segments and displacement axis . The elastic recovery and plasticity index were evaluated from the U el / U tot and U pl / U tot ratios, respectively.…”

Section: Methodsmentioning

confidence: 99%

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Nanostructured Ti‐Zr‐Pd‐Si‐(Nb) bulk metallic composites: Novel biocompatible materials with superior mechanical strength and elastic recovery

et al. 2014

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The microstructure, mechanical behaviour, and biocompatibility (cell culture, morphology, and cell adhesion) of nanostructured Ti45Zr15Pd35‐xSi5Nbx with x = 0, 5 (at. %) alloys, synthesized by arc melting and subsequent Cu mould suction casting, in the form of rods with 3 mm in diameter, are investigated. Both Ti‐Zr‐Pd‐Si‐(Nb) materials show a multi‐phase (composite‐like) microstructure. The main phase is cubic β‐Ti phase (Im3m) but hexagonal α‐Ti (P63/mmc), cubic TiPd (Pm3m), cubic PdZr (Fm3m), and hexagonal (Ti, Zr)5Si3 (P63/mmc) phases are also present. Nanoindentation experiments show that the Ti45Zr15Pd30Si5Nb5 sample exhibits lower Young's modulus than Ti45Zr15Pd35Si5. Conversely, Ti45Zr15Pd35Si5 is mechanically harder. Actually, both alloys exhibit larger values of hardness when compared with commercial Ti‐40Nb, (HTi‐Zr‐Pd‐Si ≈ 14 GPa, HTi‐Zr‐Pd‐Si‐Nb ≈ 10 GPa and HTi‐40Nb ≈ 2.7 GPa). Concerning the biological behaviour, preliminary results of cell viability performed on several Ti‐Zr‐Pd‐Si‐(Nb) discs indicate that the number of live cells is superior to 94% in both cases. The studied Ti‐Zr‐Pd‐Si‐(Nb) bulk metallic system is thus interesting for biomedical applications because of the outstanding mechanical properties (relatively low Young's modulus combined with large hardness), together with the excellent biocompatibility. © 2014 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 103B: 1569–1579, 2015.

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Section: Methodsmentioning

confidence: 99%