▎ 摘 要
In the present study, the microstructure and mechanical behaviors of graphene nanoplatelets (GNPs)/titanium (Ti) particles reinforced AZ91 laminate under tension along the rolling direction (RD) were systematically studied. The laminated composite with hybrid GNPs + Ti particles exhibits optimal mechanical properties, with a yield strength of 160 MPa, an ultimate tensile strength of 243 MPa, and elongation of 20.8%. Electron back-scattered diffraction and slip trace analysis was conducted to reveal the mechanisms for the enhancement of strength and ductility of AZ91 by GNPs/Ti particles addition. The higher yield strength of reinforced AZ91 composites beyond the un-reinforced AZ91 laminate is mainly derived from the weakened recrystallization behavior near the interfaces by composites layers, leading to strong texture strengthening. The significantly increased ductility is derived from the higher activity of 2nd order pyramidal