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Conference Paper: Deformation twins are not important for twinning-induced plasticity steel
| Title | Deformation twins are not important for twinning-induced plasticity steel |
|---|---|
| Authors | |
| Issue Date | 2018 |
| Publisher | Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), Xi'an Jiaotong University. |
| Citation | 11th International Workshop on Materials Behavior at the Micro- and Nano- Scale, Xi’an, China, 8-10 June 2018 How to Cite? |
| Abstract | The present work re-evaluate the role of deformation twins on the mechanical properties of twinning-induced plasticity (TWIP) steels. It is found that the dislocation density in a TWIP steel is very high and the corresponding dislocation strengthening accounts for ~90% of the flow stress increment after yielding. Deformation twins contribute less than 10% of the flow stress. Furthermore, it is found that the work hardening rate and dislocation density in the TWIP steel deformed at 473 K are comparable to that deformed at 298 K, but deformation twins are considerably prohibited at 473 K. In other words, deformation twins are not the dominant mechanism for the high work hardening rate and excellent mechanical properties of TWIP steels. High dislocation density induced by dynamic strain aging is the main mechanism responsible for the high work-hardening rate of TWIP steels. |
| Description | Hosted by the Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University |
| Persistent Identifier | http://hdl.handle.net/10722/267711 |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Huang, M | - |
| dc.date.accessioned | 2019-02-28T08:00:11Z | - |
| dc.date.available | 2019-02-28T08:00:11Z | - |
| dc.date.issued | 2018 | - |
| dc.identifier.citation | 11th International Workshop on Materials Behavior at the Micro- and Nano- Scale, Xi’an, China, 8-10 June 2018 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/267711 | - |
| dc.description | Hosted by the Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University | - |
| dc.description.abstract | The present work re-evaluate the role of deformation twins on the mechanical properties of twinning-induced plasticity (TWIP) steels. It is found that the dislocation density in a TWIP steel is very high and the corresponding dislocation strengthening accounts for ~90% of the flow stress increment after yielding. Deformation twins contribute less than 10% of the flow stress. Furthermore, it is found that the work hardening rate and dislocation density in the TWIP steel deformed at 473 K are comparable to that deformed at 298 K, but deformation twins are considerably prohibited at 473 K. In other words, deformation twins are not the dominant mechanism for the high work hardening rate and excellent mechanical properties of TWIP steels. High dislocation density induced by dynamic strain aging is the main mechanism responsible for the high work-hardening rate of TWIP steels. | - |
| dc.language | eng | - |
| dc.publisher | Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), Xi'an Jiaotong University. | - |
| dc.relation.ispartof | 11th International Workshop on Materials Behavior at the Micro- and Nano- Scale, 2018 | - |
| dc.title | Deformation twins are not important for twinning-induced plasticity steel | - |
| dc.type | Conference_Paper | - |
| dc.identifier.email | Huang, M: mxhuang@hku.hk | - |
| dc.identifier.authority | Huang, M=rp01418 | - |
| dc.identifier.hkuros | 290660 | - |
| dc.publisher.place | China | - |