caa a22 4500 463227530 CHVBK 20180405153231.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s10853-006-0167-8 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0167-8 Acoustic emission inspection of Portevin-Le Chatelier effect and deformation mechanisms of two Mg-Li-Al alloys [Elektronische Daten] [Cong Wang, Zhuoqun Li, Yongbo Xu, Enhou Han] In this paper, Portevin-Le Chatelier (PLC) effect of LA41 magnesium alloy is reported. With increasing strain rate, both ultimate tensile stresses (σb) and 0.2% proof (σ0.2) stresses increase, while serrations become less severe. Major acoustic emission (AE) peaks appear at the end of elastic region, and transform to burst type signals in the plastic range. In another alloy containing less Li (LA11), serrations are absent and major AE peak values are considerably lowered. Additionally, PLC effect disappears in LA41 after annealing. The role of twins is discussed in details. Actual causes for AE activity during deformation are also proposed. Springer Science+Business Media, LLC, 2007 Wang Cong Environmental Corrosion Center, Institute of Metal Research, Chinese Academy of Sciences, 110016, Shenyang, P.R. China aut Li Zhuoqun Environmental Corrosion Center, Institute of Metal Research, Chinese Academy of Sciences, 110016, Shenyang, P.R. China aut Xu Yongbo Shenyang National Laboratory for Material Science, Institute of Metal Research, Chinese Academy of Sciences, 110016, Shenyang, P.R. China aut Han Enhou Environmental Corrosion Center, Institute of Metal Research, Chinese Academy of Sciences, 110016, Shenyang, P.R. China aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/10(2007-05-01), 3573-3579 0022-2461 42:10<3573 2007 42 10853 https://doi.org/10.1007/s10853-006-0167-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0167-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Cong Environmental Corrosion Center, Institute of Metal Research, Chinese Academy of Sciences, 110016, Shenyang, P.R. China aut NATIONALLICENCE 700 1- Li Zhuoqun Environmental Corrosion Center, Institute of Metal Research, Chinese Academy of Sciences, 110016, Shenyang, P.R. China aut NATIONALLICENCE 700 1- Xu Yongbo Shenyang National Laboratory for Material Science, Institute of Metal Research, Chinese Academy of Sciences, 110016, Shenyang, P.R. China aut NATIONALLICENCE 700 1- Han Enhou Environmental Corrosion Center, Institute of Metal Research, Chinese Academy of Sciences, 110016, Shenyang, P.R. China aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/10(2007-05-01), 3573-3579 0022-2461 42:10<3573 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer