Coherent phase diagram of the AuCuPt section in the AuCuPt ternary system

• Published in: Journal of alloys and compounds Vol. 206; no. 2; pp. 217 - 224
• Main Authors: El Araby, A.M., Tanaka, Y., Udoh, K-I., Hisatsune, K., Yasuda, K.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.05.1994; Elsevier
• Subjects: Applied sciences; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Metals. Metallurgy; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Phase diagrams of metals and alloys; Physics; Gold; Phase diagrams; FCC lattices; Gold alloys; Electron diffraction; Ternary systems; Experimental study; Binary alloys; Alpha phase; Platinum; Copper alloys; Copper; Microstructure; TEM; Crystal structure
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/0925-8388(94)90039-6

To determine the coherent phase diagram of the AuCuPt pseudobinary system, phase identification and analysis of microstructural configurations were performed, mainly by means of transmission electron microscopy and selected-area electron diffraction examination. Various regions were found in the present experimental coherent phase diagram: (1) α phase region (a single phase of f.c.c. disordered solid solution); (2) AuCu I (L1 0), f.c.t. ordered single-phase region; (3) long-period orthorhombic superstructure AuCu II (L1 0-s) single-phase region; (4) α + AuCu I region of two coexisting phases; (5) AuCu I + AuCu II region of two coexisting phases; (6) α + AuCu I + AuCu II region of three coexisting phases. Microstructural features of these regions were described related to phase transformations.