作者: S.M. Yin , H.J. Yang , S.X. Li , S.D. Wu , F. Yang
DOI: 10.1016/J.SCRIPTAMAT.2007.12.020
关键词: Materials science 、 Cyclic deformation 、 Electron backscatter diffraction 、 Composite material 、 Plasticity 、 Crystal twinning 、 Metallurgy 、 Magnesium alloy 、 Hardening (metallurgy)
摘要: The cyclic deformation behavior of extruded magnesium alloy Mg-3%Al-1%Zn (AZ31) was studied under plastic strain amplitude and stress amplitude-control at room temperature. A significant hardening asymmetry amplitudes between compression tension observed constant amplitude-controlled cycling. possible reasons for this phenomenon are discussed by a combination hysteresis loop analysis in situ observation twinning untwinning during one loading cycle using electron backscatter diffraction. (C) 2007 Acta Materialia Inc. Published Elsevier Ltd. All rights reserved.