Mechanical behavior and microstructural evolution of nanostructured bainite under high-strain rate deformation by Hopkinson bar

Y. T. Tsai, C. R. Lin, Woei-Shyan Lee, C. Y. Huang, J. R. Yang

研究成果: Article同行評審

14 引文 斯高帕斯(Scopus)

摘要

To explore the mechanical behavior and microstructure evolution of nanostructured bainite under deformation at high strain rates (> 103 s- 1), split Hopkinson pressure bar experiments were conducted. It was found that nanometer-sized twinning occurred in both blocky austenite and film austenite. In the former case, the intersections of different twin variants brought about strain-induced α'-martensite, while in the latter case, the lamellar twinned structures were occasionally accompanied by a small amount of ε martensite. It is concluded that twinning occurs first in blocky austenite, enhancing the initial work-hardening; subsequent twinning takes place in film austenite, promoting further straining.

原文English
頁(從 - 到)46-51
頁數6
期刊Scripta Materialia
115
DOIs
出版狀態Published - 2016 四月 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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