| Autor: |
Reza Gholizadeh, Daisuke Terada, Akinobu Shibata, Nobuhiro Tsuji |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Nano Materials Science, Vol 2, Iss 1, Pp 83-95 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2589-9651 |
| DOI: |
10.1016/j.nanoms.2020.03.005 |
| Popis: |
Single-phase bcc-ferrite in an interstitial free (IF) steel was deformed to different strains in a wide range from low to high strains (ε = 1–7) by torsion under different Zener-Hollomon (Z) conditions. The specimens were rapidly quenched after the torsion to preserve microstructures formed under different deformation conditions. The results showed that during high-Z (low-temperature) deformation, grains were subdivided by geometrically necessary boundaries (GNBs) via the grain subdivision mechanism. Deformation to high strains (ε > 5) led to the ultrafine lamellar structures (with grain sizes 1 μm) were realized with decreasing Z. The significance of the grain subdivision and the thermally activated phenomena on the formation of various microstructures under different deformation conditions is discussed. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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