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Pressure enhancemen...
Pressure enhancement of the isostructural cubic decomposition in Ti1−xAlxN
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- Alling, Björn (author)
- Linköpings universitet,Teoretisk Fysik,Tekniska högskolan
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- Odén, Magnus (author)
- Linköpings universitet,Nanostrukturerade material,Tekniska högskolan
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- Hultman, Lars (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska högskolan
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- Abrikosov, Igor (author)
- Linköpings universitet,Teoretisk Fysik,Tekniska högskolan
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(creator_code:org_t)
- AIP Publishing, 2009
- 2009
- English.
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In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 95:181906
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Abstract
Subject headings
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- The influence of pressure on the phase stabilities of Ti1−xAlxN solid solutions has been studied using first principles calculations. We find that the application of hydrostatic pressure enhances the tendency for isostructural decomposition, including spinodal decomposition. The effect originates in the gradual pressure stabilization of cubic AlN with respect to the wurtzite structure and an increased isostructural cubic mixing enthalpy with increased pressure. The influence is sufficiently strong in the composition-temperature interval corresponding to a shoulder of the spinodal line that it could impact the stability of the material at pressures achievable in the tool-work piece contact during cutting operations
Keyword
- ab initio calculations
- aluminium compounds
- enthalpy
- high-pressure effects
- mixing
- solid solutions
- spinodal decomposition
- titanium compounds
- NATURAL SCIENCES
- NATURVETENSKAP
Publication and Content Type
- ref (subject category)
- art (subject category)
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