https://scholars.lib.ntu.edu.tw/handle/123456789/576923
標題: | Extraordinary warm ductility of a Mn-rich high-strength steel achieved at temperature below 0.5 Tm | 作者: | Cheng G.-J Lai Z.-H Jia T Huang C.-Y Yen H.-W. HUNG-WEI YEN |
關鍵字: | Aluminum coated steel; Austenite; Deformation; Ductility; Manganese steel; Strain energy; Temperature; Austenite reversion; Electron back scatter diffraction; Micro-structure evolutions; Thermodynamic calculations; Warm deformation; High strength steel | 公開日期: | 2021 | 卷: | 803 | 來源出版物: | Materials Science and Engineering A | 摘要: | This work employed austenite reversion during deformation to achieve large ductility at a temperature below 0.5 Tm (melting temperature) in Mn-rich high strength steels. This goal was achieved in a Mn-rich steel without Al, in which a higher austenite reversion rate below 0.5 Tm was obtained. The tensile results evidenced the extraordinary ductility of over 90% at 550 °C, which is about 0.48 Tm of the steel. Thermodynamic calculation was applied to elucidate the effects of Al and strain energy. Moreover, electron backscatter diffraction was used to investigate microstructure evolution under various conditions. It was found that rate of austenite reversion is more critical than ferrite recrystallization in enhancing ductility during warm deformation. ? 2021 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098892339&doi=10.1016%2fj.msea.2020.140704&partnerID=40&md5=01274353adcbf52605ba9eab09361d7f https://scholars.lib.ntu.edu.tw/handle/123456789/576923 |
ISSN: | 9215093 | DOI: | 10.1016/j.msea.2020.140704 |
顯示於: | 材料科學與工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。