Strain-hardening behaviour of AZ31 magnesium alloys
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Jaroslav Balík
Abstract
The in-plane tensile behaviour of rolled sheets of the magnesium alloy AZ31 was investigated in both an H24 state and an aged state. Whereas the very high initial strain-hardening rate decreases monotonically with strain for the H24 samples, the annealed structure exhibits a striking increase in the strain-hardening rate. To explain this phenomenon, the occurrence of sessile dislocations associated with a secondary (pyramidal) slip is proposed. The absence of increasing hardening for the H24 state is supposed to be related to higher yield stresses (predeformations) within the grains of the polycrystalline aggregate.
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© 2009, Carl Hanser Verlag, München
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
- Theoretical investigation of phase equilibria by the continuous displacement cluster variation method
- Alloying behaviour of binary transition metal systems
- Surface composition of a Ag-5.1Cu (mass%) alloy
- Temperature and strain rate dependent flow criterion for bcc transition metals based on atomistic analysis of dislocation glide
- Strain-hardening behaviour of AZ31 magnesium alloys
- Bauschinger effect in thin metal films simulated by the continuum dislocation-based model
- Core structure of screw dislocations in hcp Ti: an ab initio DFT study
- Long-range internal stresses in monotonically and cyclically deformed metallic single crystals
- Energetic formulation of nonlocal crystal plasticity
- Austenite–martensite interfaces in strained foils of CuAlNi alloy
- 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
- FeAl-based alloys cast in an ultrasound field
- 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
- High-rate plastic deformation of a copper single crystal under loading by spherical converging shock waves
- Hardening and softening in an Mg–Al–Ca matrix alloy reinforced with short graphite fibres
- Deformation behaviour of microcrystalline magnesium reinforced by alumina nano- and microparticles
- Thresholds in creep of magnesium alloy AX41 composites reinforced with short fibers
- Recovery processes in magnesium alloy AX41 and AX41-12 vol.% C-fibre composite studied by dilatometry
- Directional crystallisation of Ti–Al–Si in-situ composites
- Microstructure and mechanical properties of the AA6082 aluminium alloy with small additions of Sc and Zr
- Microstructure of a ternary Al–Pd–Rh alloy
- Effect of annealing on microstructure and properties of twin-roll-cast Al–Mn alloys with different copper content
- 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
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
- Theoretical investigation of phase equilibria by the continuous displacement cluster variation method
- Alloying behaviour of binary transition metal systems
- Surface composition of a Ag-5.1Cu (mass%) alloy
- Temperature and strain rate dependent flow criterion for bcc transition metals based on atomistic analysis of dislocation glide
- Strain-hardening behaviour of AZ31 magnesium alloys
- Bauschinger effect in thin metal films simulated by the continuum dislocation-based model
- Core structure of screw dislocations in hcp Ti: an ab initio DFT study
- Long-range internal stresses in monotonically and cyclically deformed metallic single crystals
- Energetic formulation of nonlocal crystal plasticity
- Austenite–martensite interfaces in strained foils of CuAlNi alloy
- 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
- FeAl-based alloys cast in an ultrasound field
- 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
- High-rate plastic deformation of a copper single crystal under loading by spherical converging shock waves
- Hardening and softening in an Mg–Al–Ca matrix alloy reinforced with short graphite fibres
- Deformation behaviour of microcrystalline magnesium reinforced by alumina nano- and microparticles
- Thresholds in creep of magnesium alloy AX41 composites reinforced with short fibers
- Recovery processes in magnesium alloy AX41 and AX41-12 vol.% C-fibre composite studied by dilatometry
- Directional crystallisation of Ti–Al–Si in-situ composites
- Microstructure and mechanical properties of the AA6082 aluminium alloy with small additions of Sc and Zr
- Microstructure of a ternary Al–Pd–Rh alloy
- Effect of annealing on microstructure and properties of twin-roll-cast Al–Mn alloys with different copper content
- 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
