Assessment of Co-Cr-Ni ternary system by CALPHAD technique

作者：Yang Shuyu; Jiang Min^*; Li Hongxiao; Liu Yang; Wang Lei

来源：Rare Metals, 2012, 31(1): 75-80.

DOI：10.1007/s12598-012-0466-y

• Co-Cr-Ni
• phase diagram
• CALPHAD
• Co-based superalloys
• alloy design

The Co-Cr-Ni ternary system was critically assessed using the CALPHAD technique. The solution phases including the liquid, gamma(Co,Ni), E > Co and alpha Cr phases were described by a substitutional solution model. The sigma phase was characterized by a three-sublattice model of (Co,Ni)(8)Cr-4(Co,Cr,Ni)(18) in order to reproduce its homogeneity range determined by experiments. A self-consistent set of thermodynamic parameters for each phase was derived.

• 单位
  东北大学