Evolution of microstructure and mechanical properties of ultra-fine-grained IF steel processed by equal channel angular pressing
|
| Title | Evolution of microstructure and mechanical properties of ultra-fine-grained IF steel processed by equal channel angular pressing |
| Authors | |
| Abstract | Equal channel angular pressing (ECAP) is one of the severe plastic deformation techniques which is widely used for producing metals with ultra-ï¬ne-grained microstructures. In the present work the influence of number of pressing by route BC on grain size, evolution of microstructure and mechanical properties of interstitial-free (IF) steel has been investigated by means of optical microscopy, electron back-scattering diffraction (EBSD) and tensile tests. It has been found, that the grain size decreases with increasing number of passes. Simultaneously tensile strength increases. The thermal stability of ECAP-processed microstructures has been also examined. It was found that the degradation of mechanical properties occurs only above 600ËC and 700ËC. |
| Publisher | |
| Date | 2013-04-14 |
| Source | |
| Rights | http://creativecommons.org/licenses/by-nc-nd/3.0/ |