Anelastic Phenomena in Mg-Al Alloys

• Authors: D. Nagarajan , C. Caceres , J. Griffiths
• Languages of publication: EN

Abstracts

EN

Cyclic loading-unloading in tension and compression has been used to quantify the anelastic behaviour, in the form of hysteresis loops, of pure Mg and three Mg-Al alloys (0.5, 2, and 9 at.% Al). The effect reached a maximum at a plastic strain of ≈ 0.02 for all of the materials, and decreased at higher strains. The amount of anelasticity at any given strain was smaller for the dilute alloys in comparison with the pure Mg whereas it increased above that of pure Mg for the most concentrated alloy. Possible reasons for this behaviour are discussed in terms of reversible twinning, solid solution softening, and hardening and short range order.

Keywords

EN

62.40.+i; 61.72.Mm; 81.40.Cd; 75.40.-s

Discipline

• 62.40.+i: Anelasticity, internal friction, stress relaxation, and mechanical resonances(for materials treatment effects on anelasticity, see 81.40.Jj in materials science)
• 81.40.Cd: Solid solution hardening, precipitation hardening, and dispersion hardening; aging(see also 64.75.Nx Phase separation and segregation in solid solutions)
• 61.72.Mm: Grain and twin boundaries
• 75.40.-s: Critical-point effects, specific heats, short-range order(for equilibrium properties near critical points, see 64.60.F-; for dynamical critical phenomena, see 64.60.Ht)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 122
• Issue: 3
• Pages: 501-504

Dates

published

2012-09

Contributors

author

D. Nagarajan

• ARC-Centre of Excellence for Design in Light Metals, Materials Engineering, School of Engineering, The University of Queensland, Brisbane, QLD 4072, Australia

author

C. Caceres

• ARC-Centre of Excellence for Design in Light Metals, Materials Engineering, School of Engineering, The University of Queensland, Brisbane, QLD 4072, Australia

author

J. Griffiths

• CSIRO Process Science & Engineering, P.O. Box 883, Kenmore, QLD 4069, Australia

References

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Identifiers

DOI

10.12693/APhysPolA.122.501