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Spinodal decomposition in a melt-spun Cu-15Ni-8Sn alloy


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Title: Spinodal decomposition in a melt-spun Cu-15Ni-8Sn alloy
Authors: Kondo, Shin-ichiro / Nakashima, Hiromichi / Morimura, Takao
Issue Date: 1-May-2019
Publisher: Elsevier B.V.
Citation: Physica B: Condensed Matter, 560, pp.244-254; 2019
Abstract: We investigate the spinodal decomposition process in a melt-spun Cu-15Ni-8Sn alloy using X-ray diffraction (XRD),transmission electron microscopy (TEM), and electron diffraction analyses. In the XRD measurements, an aging treatment of more than 300 min at 350 °C was required to obtain the (200) sidebands. TEM observations of the melt-spun samples aged at 350 °C for 40, 60, and 300 min showed a modulated structure with a wavelength too small to be detected by TEM and aging for about 1200 min was required for the clear appearance of a modulated structure. The electron diffraction patterns showed only the disordered fcc phase with no satellite structures in the sample aged for 20 min at 350 °C, which implied that no spinodal decomposition occurred. Aging for 40 min at 350 °C was required before the super-lattice reflection of DO 22 was observed. These experimental results indicate that the decomposition process in the melt-spun alloy was slow initially.
Keywords: Cu-Ni-Sn alloy / Melt-spun / Satellite / Sideband / Spinodal decomposition / Superlattice reflection
URI: http://hdl.handle.net/10069/38957
ISSN: 09214526
DOI: 10.1016/j.physb.2019.01.030
Rights: © 2019 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Type: Journal Article
Text Version: author
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/38957

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