## Abstract

Enthalpies of mixing for ternary fcc solid solutions in Al-Cu-Mg, Al-Cu-Si, and Al-Mg-Si systems are calculated from first-principles study of ternary fcc Special Quasirandom Structures (SQS) whose correlation functions are close to those of completely random fcc solid solutions. It is shown that ternary fcc SQSs calculations at four different compositions in each system, i.e. x_{A} = x_{B} = x_{C} = frac(1, 3); x_{A} = frac(1, 2), x_{B} = x_{C} = frac(1, 4); x_{A} = frac(1, 4), x_{B} = frac(1, 2), x_{C} = frac(1, 4); and x_{A} = x_{B} = frac(1, 4), x_{C} = frac(1, 2), can be used to determine whether the extrapolated enthalpy of mixing from corresponding three binaries is able to describe the ternary mixing behavior correctly.

Original language | English (US) |
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Pages (from-to) | 74-81 |

Number of pages | 8 |

Journal | Calphad: Computer Coupling of Phase Diagrams and Thermochemistry |

Volume | 32 |

Issue number | 1 |

DOIs | |

State | Published - Mar 1 2008 |

## All Science Journal Classification (ASJC) codes

- Chemistry(all)
- Chemical Engineering(all)
- Computer Science Applications