| Autor: |
Abib, K., Azzeddine, H., Alili, B., Lityńska-Dobrzyńska, L., Helbert, A. L., Baudin, T., Jegou, P., Mathon, M. H., Zieba, P., Bradai, D. |
| Předmět: |
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| Zdroj: |
Metallic Materials / Kovové Materiály; 2019, Vol. 57 Issue 2, p121-129, 9p |
| Abstrakt: |
The precipitation of nano-sized Cr clusters was investigated in a commercial Cu-1Cr-0.1Zr (wt.%) alloy processed by equal-channel angular pressing and subsequent aging at 550°C for 4 h using Small-Angle Neutron Scattering (SANS) measurements and High-Angle Annular Dark-Field-Scanning Transmission Electron Microscopy (HAADF-STEM). The size and volume fraction of the nano-sized Cr clusters were estimated using both techniques. The parameter values assessed by SANS (d ~ 3.2 nm, Fv ~ 1.1 %) agreed reasonably with those by HAADF-STEM (d ~ 2.5 nm, Fv ~ 2.3 %). In addition to the nano-sized Cr clusters, HAADF-STEM indicated the presence of rare cuboid and spheroid sub-micronic Cr particles measuring approximately 380-620 nm in mean size. Both techniques did not evidence the presence of intermetallic CuxZry phases within the aging conditions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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