| Autor: |
Sarkeeva, Elena, Abramova, Marina M., Alexandrov, Igor V. |
| Zdroj: |
Diffusion and Defect Data Part A: Defect and Diffusion Forum; July 2018, Vol. 385 Issue: 1 p273-277, 5p |
| Abstrakt: |
The article studies an influence of temperature of severe plastic deformation (SPD) and post-deformation heat treatment on microstructure, mechanical properties and thermal stability of the Cu-0.5Cr-0.2Zr alloy. The results demonstrate that strength is considerably increased to 900 MPa by high pressure torsion (HPT) at room temperature. Subsequent ageing at 450 °С during 1 hour leads to a decay of solid solution and an allocation of dispersion particles that further incrises strength to 900 MPa, restores electrical conductivity to 70% IACS (International annealed copper standard) and enhances thermal stability of the alloy. When deformation temperature is increased to 300°С, strength is 690 MPa that is lower than in the case of deformation at room temperature that is related to reversion process at deformation. Additional a aging does not lead to an increase of strength characteristics. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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