Isothermal Sections
Typical ternary phase diagrams are isothermal and vertical sections. Such diagrams can be of practical applications as well, e.g. making a preliminary determination of the heating temperature for melting, solution treatment, homogenization, and aging for specific alloys.
For other ternary system examples, see Vertical Sections.
In these examples, the isothermal sections for Cu-Mn-Sn system at 550 °C and Cu-Ni-Sn system at 800 °C are calculated with the TCS Cu-based Alloys Database (TCCU). The experimental data are appended for comparison.
When working in Thermo‑Calc with ternary diagrams you use either the Ternary Calculator (in Graphical Mode) or the Ternary module (in Console Mode). The fundamental calculation engine is the same but you access the settings in different ways.
Cu-Mn-Sn
Figure 1: Calculated isothermal section of Cu-Mn-Sn at 550°C along with experimental data [1953Bla; 1953Fun; 1987Leo].
Cu-Ni-Sn
Figure 2: Calculated isothermal section of Cu-Ni-Sn at 800 °C along with experimental data [2003Wan].
References
[1953Fun] C. W. Funk, J. A. Rowland, Alpha Solid-Solution Area of the Cu-Mn-Sn System. Trans. Am. Soc. Met. AIME. 197, 723–725 (1953).
[1953Bla] J. C. Blade, J. W. Cuthbertson, The structure and mechanical properties of copper-manganese. J. Inst. Met. 82, 17–24 (1953).
[1987Leo] N. P. Leonova, N. R. Bochvar, E. V Lysova, Phase equilibria in copper-rich Cu-Mn-Sn alloys. Russ. Metall. 4, 204–206 (1987).
[2003Wan] C.-H. Wang, S.-W. Chen, Isothermal section of the ternary Sn-Cu-Ni system and interfacial reactions in the Sn-Cu/Ni couples at 800 °C. Metall. Mater. Trans. A. 34, 2281–2287 (2003).