ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
Environmentally friendly Cu-based alloys with high strength and low electrical resistivityhave been much sought in order to replace deleterious Cu-Be alloys for electrical applications. Asone of the candidate systems, we have examined age-hardening behaviors of Cu-Mg alloys by usingtransmission electron microscopy (TEM). Cu-2.26wt.%Mg alloys were solution-treated andannealed at 723K, and their structural changes have been investigated. The Vickers hardnessmeasurements showed that they aged-harden gradually. Our TEM observations showed thatannealing for 6h brings about precipitation of numerous needle-like particles of 10 nm in length.The diffraction studies indicated these precipitates consist of the Cu2Mg phase with {111}Cu habitplanes. When annealed for 96h, these precipitates become semi-coherent, which was manifested bymoiré fringes; while maintaining the orientation relationship of (111)Cu//(111)Cu2Mg,[110]Cu//[110]Cu2Mg
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.127.103.pdf
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