Structural and phase transformations in Zr and Zr–Nb alloys under loading by spherical converging stress waves
-
Nina Taluts
, Arkadiy Dobromyslov and Evgeniy Kozlov
Abstract
X-ray diffraction, optical and transmission electron microscopy, and measurement of microhardness were used to study zirconium and Zr – Nb alloys loaded by spherical converging stress waves of different intensity. It is revealed that the phase and structural states of the specimens depend on the loading intensity, the niobium content and the depth of the layer in the sphere. The ω-phase (high pressure phase) is retained in a metastable state only after low-intensity loading, and the quantity of the ω-phase increases with increase in niobium content in the alloy. The ω-phase is not retained after high-intensity loading because of high remaining temperatures. It was established that various defects (deformation twins, dislocations, adiabatic shear bands, regions of unstable plastic flow and cracks) are produced during loading.
References
[1] E.A.Kozlov, B.V.Litvinov, E.V.Abakshin, A.V.Dobromyslov, N.I.Talut, N.V.Kazantseva, G.G.Taluts: Phys. Met. Metallog.79 (1995) 662–672.Search in Google Scholar
[2] A.V.Dobromyslov, N.I.Taluts, N.V.Kazantseva, E.A.Kozlov: Scripta Mater.42 (2000) 61–71.10.1016/S1359-6462(99)00311-5Search in Google Scholar
[3] A.V.Dobromyslov, N.I.Taluts: Phys. Met. Metallog.79 (1995) 620–636.Search in Google Scholar
© 2009, Carl Hanser Verlag, München
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Articles in the same Issue
- Contents
- Contents
- Editorial
- 11th ISPMA in Prague
- Feature
- Physical aspects of plastic deformation in Mg–Al alloys with Sr and Ca
- Review
- Fe–Al materials for structural applications at high temperatures: Current research at MPIE
- Basic
- Very high cycle fatigue behaviour of as-extruded AZ31, AZ80, and ZK60 magnesium alloys
- Phase composition and morphology development in WE-type alloys modified by high Zn content
- Microstructural investigation of the failure mechanisms after creep exposure of Mg–Y–Nd–Zn–Mn alloy
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- Long-range internal stresses in monotonically and cyclically deformed metallic single crystals
- Energetic formulation of nonlocal crystal plasticity
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- Mechanical anisotropy and ideal strength in a multifunctional Ti–Nb–Ta–Zr–O alloy (Gum Metal)
- Low-cycle fatigue properties of TiAl alloy with high Nb content
- Mechanism and kinetics of the intermediary phase formation in Ti–Al and Ti–Al–Si systems during reactive sintering
- Influence of the dynamic crystallization conditions on the martensitic transformation in the Ti40.7Hf9.5Ni39.8Cu10 shape memory alloy
- Isostructural phase transition in hexagonal Ce1–xYxPdAl compounds
- Structural and phase transformations in Zr and Zr–Nb alloys under loading by spherical converging stress waves
- Influence of titanium volume fraction on the mechanical properties of Mg–Ti composites
- Applied
- Effects of prior homogenization treatments on microstructure development and mechanical properties of the extruded wrought magnesium alloy ZK60
- Annealing effects after various thermo-mechanical treatments on microstructure and mechanical properties of the wrought magnesium alloy AZ80
- Vacancy–solute interaction in magnesium alloy WE54 during artificial ageing: a positron annihilation spectroscopy study
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- High-temperature mechanical properties of Fe-40 at.% Al based intermetallic alloys with C or Ti addition
- The influence of dispersoids on the recrystallization of aluminium alloys
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- Hardening and softening in an Mg–Al–Ca matrix alloy reinforced with short graphite fibres
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- Thresholds in creep of magnesium alloy AX41 composites reinforced with short fibers
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- Quantitative characterization of the orientation spread within individual grains in copper after tensile deformation
- Effect of crystallization on the deformation behavior of a Zr-based bulk metallic glass
- Changes in structure and properties of carbide-steel cermets resulted from a heat treatment
- Comparative study of the high-temperature behaviour of Mg–Al and Mg–Zn wrought alloys
- Notification
- DGM News