Please use this identifier to cite or link to this item:
http://hdl.handle.net/11375/21830
Title: | Connectivity of Phases and Growth Mechanisms in Peritectic Alloys Solidified at Low Speed: an X-Ray Tomography Study of Cu-Sn |
Authors: | Rappaz, M. Kohler, F. Valloton, J. Phillion, A.B. Stampanoni, M. |
Department: | Materials Science and Engineering |
Publication Date: | Mar-2010 |
Publisher: | Springer |
Citation: | Rappaz, M., et al. "Connectivity of Phases and Growth Mechanisms in Peritectic Alloys Solidified at Low Speed: an X-Ray Tomography Study of Cu-Sn." Metallurgical and Materials Transactions A 41.3 (2010): 563-567. |
Abstract: | The variety of microstructures that form at low solidi cation speed in peritectic alloys, -bands, islands or even coupled (or cooperative) growth of the primary alpha- and peritectic beta-phases-, have been previously explained by nucleation-growth mechanisms. In a recent investigation on Cu-Sn, a new growth mechanism was conjectured on the basis of 2-dimensional optical microscopy and Electron Back-Scattered Diffraction (EBSD) observations made in longitudinal sections. In the present contribution, X-ray tomography has been used to confi rm this mechanism: alpha- and beta-phases can be totally inter-connected in 3 dimensions and bands (or islands) can result from an overlay mechanism, rather than from a nucleation events sequence. When the lateral growth of a new layer is too fast, an instability can lead to the formation of a lamellar structure as for eutectic alloys. |
URI: | http://hdl.handle.net/11375/21830 |
Appears in Collections: | Materials Science and Engineering Publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2010_MMTA_Rappaz_etal..pdf | 2.39 MB | Adobe PDF | View/Open |
Items in MacSphere are protected by copyright, with all rights reserved, unless otherwise indicated.