Paper 13.1

Reassessment of the niobium-nickel system using site occupancy parameters for the m phase

Joubert J.-M.^1,2, Sundman B.¹ and Dupin N.³

¹ Department of Materials Science and Engineering, Royal Institute of Technology, S-10044 Stockholm, Sweden

² Laboratoire de Chimie Métallurgique des Terres Rares, ISCSA, CNRS, 2-8 rue Henri Dunant, F-94320 Thiais Cedex, France

³ Calcul Thermodynamique, 3 rue de l’Avenir, F-63670, Orcet, France

A reassessment of the Nb-Ni system is proposed taking into account new experimental data. According to recent crystallographic work, the μ phase has been modelled using three independent sublattices of variable composition. This has been made possible by including the site fraction in the different sublattices as optimized experimental data. A consistent set of parameters is proposed. A good agreement is obtained between calculated and experimental values for all kinds of data (thermodynamic, crystallographic and phase diagram data).

Paper 13.1

Reassessment of the niobium-nickel system using site occupancy parameters for the m phase

Joubert J.-M.1,2, Sundman B.1 and Dupin N.3

1 Department of Materials Science and Engineering, Royal Institute of Technology, S-10044 Stockholm, Sweden

2 Laboratoire de Chimie Métallurgique des Terres Rares, ISCSA, CNRS, 2-8 rue Henri Dunant, F-94320 Thiais Cedex, France

3 Calcul Thermodynamique, 3 rue de l’Avenir, F-63670, Orcet, France

Joubert J.-M.^1,2, Sundman B.¹ and Dupin N.³

¹ Department of Materials Science and Engineering, Royal Institute of Technology, S-10044 Stockholm, Sweden

² Laboratoire de Chimie Métallurgique des Terres Rares, ISCSA, CNRS, 2-8 rue Henri Dunant, F-94320 Thiais Cedex, France

³ Calcul Thermodynamique, 3 rue de l’Avenir, F-63670, Orcet, France