Aging Precipitation Behavior of Cu-Ag-Cr Alloy |
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| Journal | Solid State Phenomena (Volume 118) |
|---|---|
| Volume | Heat Treatment of Materials |
| Edited by | Jang Hyun Sung, Chan Gyu Lee, Yong Zoo You, Young Kook Lee and Jae Young Kim |
| Pages | 41-46 |
| DOI | 10.4028/www.scientific.net/SSP.118.41 |
| Citation | Jing Guo Lei et al., 2006, Solid State Phenomena, 118, 41 |
| Online since | December, 2006 |
| Authors | Jing Guo Lei, Ping Liu, Bao Hong Tian, Xiao Zhi, Xiao Tian Jing |
| Keywords | Coherency, Cu-Ag-Cr Alloy, Semi-Coherency |
| Abstract | The Cu-Ag-Cr alloy is a kind of aging hardening copper alloy and has excellent
combination properties of high strength and good electrical and thermal conductivity. In the present
investigation, the aging precipitation behavior of Cu-Ag-Cr alloy is studied, and the effects of aging
processes on the microstructure and properties are discussed. Emphasis is on the correlation
between the coherency and coarsening behavior of the Cr precipitates. When the alloy aging at low
annealing temperatures, the homogeneous dispersed Cr precipitates are observed to be
approximately spherical and keep coherent with Cu matrix in the Cu-Ag-Cr alloy, the coherency is
lost between at 450°C~520°C, coherency on coarsening process of Cr precipitates at high annealing
temperatures, the radium for coherent / semi-coherent transition of the Cr precipitates is determined
from TEM micrographs as 15-45nm. Aging in the intermediate stage, coherent and semi-coherent
particles can co-exist(15 |
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