Failure of Zr50Ti16.5Cu15Ni18.5 amorphous metallic ribbon

Miškuf, Jozef; Csach, К.; Juríková, Alena; Ocelík, Václav; Bengus, V. Z.; Tabachnikova, E. D.

doi:10.1007/s11223-008-0006-z

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…Samples of HPT Zr in all studied structural states were deformed until failure, which occurred by nucleation of a crack tilted approximately at 45 • to compression axis, and by shifting the two parts of the sample relatively to each other along the plane of the crack. This type of failure is typical of nanostructured hcp metals [19].…”

Section: Mechanical Propertiesmentioning

confidence: 82%

Temperature dependent mechanical properties of zirconium processed by high-pressure torsion at 300 and 77 K

Podolskiy¹,

Tabachnikova²,

Bonarski³

et al. 2016

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Several structural states of nanostructured zirconium (average grain size of 80-200 nm) were achieved by high pressure torsion (HPT) at temperatures 300 and 77 K, at pressures of 2 and 4 GPa with and without subsequent annealing. Mechanical properties of the nanostructured Zr were investigated by uniaxial compression at temperatures 300, 77 and 4.2 K. Comparison of the strength characteristics, plasticity and strain hardening of the nanostructured and coarse-grained Zr has been carried out. The influences of static recovery occurring after HPT at 77 K, and of twinning, on plasticity and strength of nanostructured Zr have been discussed. K e y w o r d s : SDP induced nanostructure, zirconium, low-temperature deformation, texture, twinning

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Section: Mechanical Propertiesmentioning

confidence: 82%

Temperature dependent mechanical properties of zirconium processed by high-pressure torsion at 300 and 77 K

Podolskiy¹,

Tabachnikova²,

Bonarski³

et al. 2016

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Wear-Fatigue Behavior of Ni88P11.78Co0.12Fe0.10 and Ni80.55Cr15.25B4.20 Metallic Glasses During Rubbing Against an Eccentric Rotating Ceramic Roller

Serrar

Guiraldenq

2012

Journal of Tribology

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The wear-fatigue rupture of Ni88P11.78Co0.12Fe0.10 (NiP) and Ni80.55Cr15.25B4.20 (NiCrB) glasses prepared by planar–flow casting have been studied using a test under simultaneous constant and cyclic loading generated by an eccentric rotation ceramic antagonist. For better apprehending the phenomena related to the structural state changes of samples before and after tests, structural characterization by x-ray diffraction, mechanical characterization by measuring Vickers microhardness (HV 0.1) and chemical composition by X-ray photoelectron spectroscopy (XPS) analysis have been carried out on as-quenched and worn dull side ribbons. Rupture surfaces, in S–N curves, have been measured by scanning electron microscope. Wear-fatigue contact tests consist to impose, simultaneously, a traction strain and cyclic normal stresses which generate traction, compression, rolling, bending and shearing. All results obtained from the two selected glasses (NiP and NiCrB) are systematically compared with those of a nickel pure crystalline foil (Ni). We evaluate mainly the wear mechanism, the mode and the typical rupture surface observed in NiP, NiCrB and Ni specimens. We specify the conditions of obtaining these rupture surfaces which often present in smooth plane, veining and “chevrons” patterns. All results show a great wear and fatigue resistance for the two metallic glasses compared to Ni. The NiCrB wear resistance is superior to that of NiP, while the difference in their fatigue limit is not clearly distinct. The reasons for the differences in wear and fatigue behavior will be discussed in relation to the metallic glass thermal stability, chemical composition, microhardness and surface rupture topography.

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Failure of Zr50Ti16.5Cu15Ni18.5 amorphous metallic ribbon

Cited by 2 publications

References 15 publications

Temperature dependent mechanical properties of zirconium processed by high-pressure torsion at 300 and 77 K

Temperature dependent mechanical properties of zirconium processed by high-pressure torsion at 300 and 77 K

Wear-Fatigue Behavior of Ni88P11.78Co0.12Fe0.10 and Ni80.55Cr15.25B4.20 Metallic Glasses During Rubbing Against an Eccentric Rotating Ceramic Roller

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