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Thresholds in creep of magnesium alloy AX41 composites reinforced with short fibers

  • Karel Milička and Ferdinand Dobeš
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 100 Issue 3

Abstract

Creep behavior of four magnesium Mg-4Al-1Ca alloy-based composites reinforced with short alumina or carbon fibers was investigated at temperatures 423, 473, 523, and 623 K. The threshold creep behavior was observed in all composites as well as in the matrix alloy AX41. Both types of fibers strongly increase creep resistance of the composites. A stronger strengthening effect was observed in composites with alumina fibers. The applied stress dependences of the minimum creep rate of all investigated materials were well described by Garofalo' sinh relationship modified for threshold concept. Threshold stresses and their temperature dependences were evaluated from the stress dependences and discussed in detail from the viewpoint of contemporary knowledge of mechanisms governing the creep behavior of metal-matrix composites.

Keywords: Metal-matrix composites; Creep; Mechanisms of creep; Threshold stress concept
* Correspondence address, Dr. Karel Milička Institute of Physics of Materials Academy of Sciences of the Czech Republic (AS CR) Zizkova 22, 61662 Brno, Czech Republic Tel.: +420 535 290 371 Fax: +420 541 218 657 E-mail:

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Received: 2008-8-26
Accepted: 2008-11-4
Published Online: 2013-06-11
Published in Print: 2009-03-01

© 2009, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. 11th ISPMA in Prague
  5. Feature
  6. Physical aspects of plastic deformation in Mg–Al alloys with Sr and Ca
  7. Review
  8. Fe–Al materials for structural applications at high temperatures: Current research at MPIE
  9. Basic
  10. Very high cycle fatigue behaviour of as-extruded AZ31, AZ80, and ZK60 magnesium alloys
  11. Phase composition and morphology development in WE-type alloys modified by high Zn content
  12. Microstructural investigation of the failure mechanisms after creep exposure of Mg–Y–Nd–Zn–Mn alloy
  13. Theoretical investigation of phase equilibria by the continuous displacement cluster variation method
  14. Alloying behaviour of binary transition metal systems
  15. Surface composition of a Ag-5.1Cu (mass%) alloy
  16. Temperature and strain rate dependent flow criterion for bcc transition metals based on atomistic analysis of dislocation glide
  17. Strain-hardening behaviour of AZ31 magnesium alloys
  18. Bauschinger effect in thin metal films simulated by the continuum dislocation-based model
  19. Core structure of screw dislocations in hcp Ti: an ab initio DFT study
  20. Long-range internal stresses in monotonically and cyclically deformed metallic single crystals
  21. Energetic formulation of nonlocal crystal plasticity
  22. Austenite–martensite interfaces in strained foils of CuAlNi alloy
  23. Mechanical anisotropy and ideal strength in a multifunctional Ti–Nb–Ta–Zr–O alloy (Gum Metal)
  24. Low-cycle fatigue properties of TiAl alloy with high Nb content
  25. Mechanism and kinetics of the intermediary phase formation in Ti–Al and Ti–Al–Si systems during reactive sintering
  26. Influence of the dynamic crystallization conditions on the martensitic transformation in the Ti40.7Hf9.5Ni39.8Cu10 shape memory alloy
  27. Isostructural phase transition in hexagonal Ce1–xYxPdAl compounds
  28. Structural and phase transformations in Zr and Zr–Nb alloys under loading by spherical converging stress waves
  29. Influence of titanium volume fraction on the mechanical properties of Mg–Ti composites
  30. Applied
  31. Effects of prior homogenization treatments on microstructure development and mechanical properties of the extruded wrought magnesium alloy ZK60
  32. Annealing effects after various thermo-mechanical treatments on microstructure and mechanical properties of the wrought magnesium alloy AZ80
  33. Vacancy–solute interaction in magnesium alloy WE54 during artificial ageing: a positron annihilation spectroscopy study
  34. FeAl-based alloys cast in an ultrasound field
  35. High-temperature mechanical properties of Fe-40 at.% Al based intermetallic alloys with C or Ti addition
  36. The influence of dispersoids on the recrystallization of aluminium alloys
  37. High-rate plastic deformation of a copper single crystal under loading by spherical converging shock waves
  38. Hardening and softening in an Mg–Al–Ca matrix alloy reinforced with short graphite fibres
  39. Deformation behaviour of microcrystalline magnesium reinforced by alumina nano- and microparticles
  40. Thresholds in creep of magnesium alloy AX41 composites reinforced with short fibers
  41. Recovery processes in magnesium alloy AX41 and AX41-12 vol.% C-fibre composite studied by dilatometry
  42. Directional crystallisation of Ti–Al–Si in-situ composites
  43. Microstructure and mechanical properties of the AA6082 aluminium alloy with small additions of Sc and Zr
  44. Microstructure of a ternary Al–Pd–Rh alloy
  45. Effect of annealing on microstructure and properties of twin-roll-cast Al–Mn alloys with different copper content
  46. Quantitative characterization of the orientation spread within individual grains in copper after tensile deformation
  47. Effect of crystallization on the deformation behavior of a Zr-based bulk metallic glass
  48. Changes in structure and properties of carbide-steel cermets resulted from a heat treatment
  49. Comparative study of the high-temperature behaviour of Mg–Al and Mg–Zn wrought alloys
  50. Notification
  51. DGM News
https://doi.org/10.3139/146.110051
Keywords for this article
Metal-matrix composites; Creep; Mechanisms of creep; Threshold stress concept

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. 11th ISPMA in Prague
  5. Feature
  6. Physical aspects of plastic deformation in Mg–Al alloys with Sr and Ca
  7. Review
  8. Fe–Al materials for structural applications at high temperatures: Current research at MPIE
  9. Basic
  10. Very high cycle fatigue behaviour of as-extruded AZ31, AZ80, and ZK60 magnesium alloys
  11. Phase composition and morphology development in WE-type alloys modified by high Zn content
  12. Microstructural investigation of the failure mechanisms after creep exposure of Mg–Y–Nd–Zn–Mn alloy
  13. Theoretical investigation of phase equilibria by the continuous displacement cluster variation method
  14. Alloying behaviour of binary transition metal systems
  15. Surface composition of a Ag-5.1Cu (mass%) alloy
  16. Temperature and strain rate dependent flow criterion for bcc transition metals based on atomistic analysis of dislocation glide
  17. Strain-hardening behaviour of AZ31 magnesium alloys
  18. Bauschinger effect in thin metal films simulated by the continuum dislocation-based model
  19. Core structure of screw dislocations in hcp Ti: an ab initio DFT study
  20. Long-range internal stresses in monotonically and cyclically deformed metallic single crystals
  21. Energetic formulation of nonlocal crystal plasticity
  22. Austenite–martensite interfaces in strained foils of CuAlNi alloy
  23. Mechanical anisotropy and ideal strength in a multifunctional Ti–Nb–Ta–Zr–O alloy (Gum Metal)
  24. Low-cycle fatigue properties of TiAl alloy with high Nb content
  25. Mechanism and kinetics of the intermediary phase formation in Ti–Al and Ti–Al–Si systems during reactive sintering
  26. Influence of the dynamic crystallization conditions on the martensitic transformation in the Ti40.7Hf9.5Ni39.8Cu10 shape memory alloy
  27. Isostructural phase transition in hexagonal Ce1–xYxPdAl compounds
  28. Structural and phase transformations in Zr and Zr–Nb alloys under loading by spherical converging stress waves
  29. Influence of titanium volume fraction on the mechanical properties of Mg–Ti composites
  30. Applied
  31. Effects of prior homogenization treatments on microstructure development and mechanical properties of the extruded wrought magnesium alloy ZK60
  32. Annealing effects after various thermo-mechanical treatments on microstructure and mechanical properties of the wrought magnesium alloy AZ80
  33. Vacancy–solute interaction in magnesium alloy WE54 during artificial ageing: a positron annihilation spectroscopy study
  34. FeAl-based alloys cast in an ultrasound field
  35. High-temperature mechanical properties of Fe-40 at.% Al based intermetallic alloys with C or Ti addition
  36. The influence of dispersoids on the recrystallization of aluminium alloys
  37. High-rate plastic deformation of a copper single crystal under loading by spherical converging shock waves
  38. Hardening and softening in an Mg–Al–Ca matrix alloy reinforced with short graphite fibres
  39. Deformation behaviour of microcrystalline magnesium reinforced by alumina nano- and microparticles
  40. Thresholds in creep of magnesium alloy AX41 composites reinforced with short fibers
  41. Recovery processes in magnesium alloy AX41 and AX41-12 vol.% C-fibre composite studied by dilatometry
  42. Directional crystallisation of Ti–Al–Si in-situ composites
  43. Microstructure and mechanical properties of the AA6082 aluminium alloy with small additions of Sc and Zr
  44. Microstructure of a ternary Al–Pd–Rh alloy
  45. Effect of annealing on microstructure and properties of twin-roll-cast Al–Mn alloys with different copper content
  46. Quantitative characterization of the orientation spread within individual grains in copper after tensile deformation
  47. Effect of crystallization on the deformation behavior of a Zr-based bulk metallic glass
  48. Changes in structure and properties of carbide-steel cermets resulted from a heat treatment
  49. Comparative study of the high-temperature behaviour of Mg–Al and Mg–Zn wrought alloys
  50. Notification
  51. DGM News
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