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Spinodal decomposition of cubic Ti1−xAlxN: Comparison between experiments and modeling

  • Paul H. Mayrhofer , Lars Hultman , Jochen M. Schneider , Peter Staron and Helmut Clemens
Published/Copyright: May 23, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 98 Issue 11

Abstract

Annealing of cubic (c) Ti1−xAlxN, possessing NaCl structure, leads to decomposition into the stable constituents c-TiN and hexagonal (h) AlN (ZnS wurtzite structure) via the formation of metastable c-TiN rich and metastable c-AlN rich phases. In this paper, we describe the influence of sizes of the newly formed particles and strain energy due to their different lattice parameter and elastic constants with respect to the remaining matrix on decomposition processes and energetics. Good agreement between the enthalpy output obtained from differential scanning calorimetry and values derived from ab-initio and continuum mechanical based calculations for the decomposition and transformation processes occurring is obtained. Based on the comparison between experiments including X-ray diffraction and small-angle neutron scattering of annealed samples and modeling we can conclude that spinodal decomposition is present in c-Ti1−xAlxN coatings with x = 0.50 and 0.66, whereas the alloy with x = 0.25 is outside the spinodal.

Keywords: Ab-initio calculation; Calorimetry; Small-angle neutron scattering; Decomposition; TiAlN
* Correspondence address, Dr. Paul H. Mayrhofer Department of Physical Metallurgy and Materials TestingMontanuniversität LeobenFranz Josef Straße 18, A-8700 Leoben, AustriaTel.: +43 3842 402 4211Fax: +43 3842 402 4202, E-mail:

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Received: 2007-3-16
Accepted: 2007-8-2
Published Online: 2013-05-23
Published in Print: 2007-11-01

© 2007, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Professor Dr. phil. Dr. techn. e. h. Hellmut F. Fischmeister
  5. Basic
  6. Compressive deformation of lamellar microstructures – a short review
  7. Influence of external and internal length scale on the flow stress of copper
  8. Spinodal decomposition of cubic Ti1−xAlxN: Comparison between experiments and modeling
  9. Combined ab-initio and N-K, Ti-L2,3, V-L2,3 electron energy-loss near edge structure studies for TiN and VN films
  10. Gold-enhanced oxidation of silicon nanowires
  11. Numerical determination of parameterised failure curves for ductile structural materials
  12. Relaxation of semiconductor nanostructures using molecular dynamics with analytic bond order potentials*
  13. Examination of phase transformations in the system Fe–N–C by means of nitrocarburising reactions and secondary annealing experiments; the α + ∊ two-phase equilibrium
  14. Applied
  15. On the evolution of secondary hardening carbides in a high-speed steel characterised by APFIM and SANS
  16. Silicon nitride tools for hot rolling of high-alloyed steel and superalloy wires – load analysis and first practical tests
  17. Development of the unloading stiffness during cyclic plastic deformation of a high-strength aluminium alloy in different tempers
  18. Enhanced thermal stability of a cobalt–boron carbide nanocomposite by ion-implantation
  19. Experimental studies and thermodynamic simulation of phase transformations in high Nb containing γ-TiAl based alloys
  20. Kinetics of nanoscale structure development during Mg-vapour reduction of tantalum oxide
  21. On the interaction of ductile damage and materials softening of a Ni-base alloy during hot deformation
  22. Adhesive contact between flat punches with finite edge radius and an elastic half-space
  23. Notifications
  24. DGM News
https://doi.org/10.3139/146.101570
Keywords for this article
Ab-initio calculation; Calorimetry; Small-angle neutron scattering; Decomposition; TiAlN

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Professor Dr. phil. Dr. techn. e. h. Hellmut F. Fischmeister
  5. Basic
  6. Compressive deformation of lamellar microstructures – a short review
  7. Influence of external and internal length scale on the flow stress of copper
  8. Spinodal decomposition of cubic Ti1−xAlxN: Comparison between experiments and modeling
  9. Combined ab-initio and N-K, Ti-L2,3, V-L2,3 electron energy-loss near edge structure studies for TiN and VN films
  10. Gold-enhanced oxidation of silicon nanowires
  11. Numerical determination of parameterised failure curves for ductile structural materials
  12. Relaxation of semiconductor nanostructures using molecular dynamics with analytic bond order potentials*
  13. Examination of phase transformations in the system Fe–N–C by means of nitrocarburising reactions and secondary annealing experiments; the α + ∊ two-phase equilibrium
  14. Applied
  15. On the evolution of secondary hardening carbides in a high-speed steel characterised by APFIM and SANS
  16. Silicon nitride tools for hot rolling of high-alloyed steel and superalloy wires – load analysis and first practical tests
  17. Development of the unloading stiffness during cyclic plastic deformation of a high-strength aluminium alloy in different tempers
  18. Enhanced thermal stability of a cobalt–boron carbide nanocomposite by ion-implantation
  19. Experimental studies and thermodynamic simulation of phase transformations in high Nb containing γ-TiAl based alloys
  20. Kinetics of nanoscale structure development during Mg-vapour reduction of tantalum oxide
  21. On the interaction of ductile damage and materials softening of a Ni-base alloy during hot deformation
  22. Adhesive contact between flat punches with finite edge radius and an elastic half-space
  23. Notifications
  24. DGM News
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