Structural evolution in Ti-Cu-Ni metallic glasses during heating

Journal Article · Thu Jan 01 00:00:00 EST 2015 · APL materials

DOI:https://doi.org/10.1063/1.4905287· OSTI ID:22415243

Pauly, S.; Stoica, M.; Kühn, U. ^[1]; Vaughan, G. ^[2]; Afonso, C. R. M. ^[3]; Eckert, J. ^[1]

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1. IFW Dresden, Institut für Komplexe Materialien, Helmholtzstraße 20, D-01069 Dresden (Germany)
2. European Synchrotron Radiation Facilities, BP 220, 38043 Grenoble (France)
3. Departamento de Engenharia de Materiais, Universidade Federal de São Carlos, Rodovia Washington Luiz, Km 235, 13565-905 São Carlos, São Paulo (Brazil)

The structural evolution of Ti{sub 50}Cu{sub 43}Ni{sub 7} and Ti{sub 55}Cu{sub 35}Ni{sub 10} metallic glasses during heating was investigated by in-situ synchrotron X-ray diffraction. The width of the most intense diffraction maximum of the glassy phase decreases slightly during relaxation below the glass transition temperature. Significant structural changes only occur above the glass transition manifesting in a change in the respective peak positions. At even higher temperatures, nanocrystals of the shape memory B2-Ti(Cu,Ni) phase precipitate, and their small size hampers the occurrence of a martensitic transformation.

• OSTI ID: 22415243
• Journal Information: APL materials, Vol. 3, Issue 1; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2166-532X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER ALLOYS
GLASS
HEATING
MARTENSITE
METALLIC GLASSES
NANOSTRUCTURES
NICKEL ALLOYS
PHASE TRANSFORMATIONS
PRECIPITATION
RELAXATION
SHAPE MEMORY EFFECT
SYNCHROTRON RADIATION
TEMPERATURE DEPENDENCE
TITANIUM BASE ALLOYS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION