Evolution of microstructure and mechanical properties of ultra-fine-grained IF steel processed by equal channel angular pressing
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| 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-fine-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 600˚C and 700˚C. |
| Publisher | Faculty of Mechanical Engineering University of Zilina, Slovak Republic |
| Date | 2013-02-23 |
| Source | Materials Engineering - Materiálové inžinierstvo (MEMI) Vol 20, No 2 (2013) |
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