Dynamic Deformation Behaviour and Dislocation Substructure of AZ80 Magnesium Alloy over a Wide Range of Temperatures

Woei Shyan Lee, Cheng Wen Chou

研究成果: Conference contribution

摘要

The high strain rate deformation behaviour and dislocation substructure of AZ80 magnesium alloy are investigated at strain rates of 8x102 s-1, 1.5x103 s-1 and 2.2x103 s-1 and temperatures of-100 C, 25 C and 300 C using a compressive split-Hopkinson pressure bar system. The flow stress, work hardening coefficient, strain rate sensitivity and temperature sensitivity all increase with increasing strain rate or decreasing temperature. Moreover, the dynamic deformation behaviour is well described by the Zerilli-Armstrong hcp constitutive equation. Transmission electron microscopy observations show that the dislocation density increases with a higher strain rate or a lower temperature. Finally, the flow stress varies linearly with the square root of the dislocation density in accordance with the Bailey-Hirsch model.

原文English
主出版物標題DYMAT 2018 - 12th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
編輯Antonio Cosculluela, Ezio Cadoni, Eric Buzaud, Herve Couque
發行者EDP Sciences
ISBN(列印)9782759890538
DOIs
出版狀態Published - 2018 九月 7
事件12th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading, DYMAT 2018 - Arcachon, France
持續時間: 2018 九月 92018 九月 14

出版系列

名字EPJ Web of Conferences
183
ISSN(列印)2101-6275
ISSN(電子)2100-014X

Other

Other12th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading, DYMAT 2018
國家France
城市Arcachon
期間18-09-0918-09-14

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

指紋 深入研究「Dynamic Deformation Behaviour and Dislocation Substructure of AZ80 Magnesium Alloy over a Wide Range of Temperatures」主題。共同形成了獨特的指紋。

引用此