Please use this identifier to cite or link to this item: doi:10.22028/D291-31919
Title: Phase decomposition and nano structure evolution of metastable nanocrystalline Cu-Co solid solutions during thermal treatment
Author(s): Bachmaier, Andrea
Stolpe, Moritz
Müller, Timo
Motz, Christian
Language: English
Title: IOP Conference Series: Materials Science and Engineering
Publisher/Platform: IOP Publishing
Year of Publication: 2015
Title of the Conference: 36th Risø International Symposium on Materials Science
Free key words: nanocrystalline materials
Cu-Co alloy materials
phase decomposition
thermal stability
non-isothermal annealing
isothermal annealing
DDC notations: 500 Science
530 Physics
540 Chemistry
600 Technology
660 Chemical engineering
Publikation type: Conference Paper
Abstract: Nanocrystalline and ultrafine-grained Cu100-xCox (x = 26 and 76) solid solutions have been prepared by severe plastic deformation (SPD) of elemental powder mixtures. For both concentrations a supersaturated solid solution fcc phase was identified after the deformation process with grain sizes of less than 50 nm for Co rich solutions and around 100 nm for Cu rich solutions. Additionally, synthesis of nanocrystalline materials in the Cu-Co alloy system by electrodeposition has been conducted. Microstructural characterization by scanning and transmission electron microscopy, differential scanning calorimetry, and microhardness measurements are used to investigate the structural evolution, the thermal stability and mechanical properties of the different nanocrystalline Cu-Co alloy materials during isothermal and non-isothermal annealing. In this study it is shown that the phase decomposition of the metastable Cu-Co solid solutions has a significant influence on their thermal stability, which can be linked to the underlying microstructure that forms during annealing.
DOI of the first publication: 10.1088/1757-899X/89/1/012017
Link to this record: urn:nbn:de:bsz:291--ds-319193
Date of registration: 18-Aug-2020
Notes: IOP Conference Series: Materials Science and Engineering, 89 (2015), 012017
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Christian Motz
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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