Aging at 850°C for 4 hours essentially removed the fine-scale precipitates produced during the prime aging treatment. Aging at 700°C lead to large scale coarsening that produced denuded zones along grain and twin boundaries, grain boundary precipitates, and removed all of the fine-scale defects to produce precipitates 20 nm in size or larger. Aging at 600°C lead to somewhat similar microstructure compared to the 700°C aged specimens, however the average size of the precipitates was not quite as large and the density appears to be somewhat higher. Denuded zones formed along all boundaries, but the grain boundary precipitation was not as extensive as in the case of the specimens aged at 700°C. Further characterization will be conducted to determine the identity and chemistry of the precipitates observed in the aged microstructures.
Revised: July 27, 2010 |
Published: April 1, 2001
Citation
Edwards D.J., and B.N. Singh. 2001.OVERAGING OF OUTOKUMPU CuCrZr. In Fusion Materials: Semi-Annual Progress Report for Period Ending December 31, 2000, edited by Berk, SE. 176-182. Washington Dc:US Department of Energy Office of Fusion Energy Sciences.PNNL-SA-31882.