Synthesis of an (Al <sub>3</sub> BC + Al <sub>2</sub> O <sub>3</sub> )/Al composite with high stiffness and attractive high-temperature tensile properties
Jingyi Hu, Tong Gao, Mengyu Li, Xiangfa Liu
Abstract
A novel (8.5Al3BC + 14.5Al2O3)/Al composite was fabricated with exceptional elevated-temperature properties and stiffness. The composite boasts an average Young’s modulus of 99 GPa, with ultimate tensile strength and elongation of the composite at 350°C averaging 188 MPa and 4.4%, respectively. The synergistic strengthening effect of Al3BC and γ-Al2O3 is responsible for the high-temperature properties, while they both contribute to the improvement of stiffness as they have a high initial Young’s modulus. This innovative composite design holds promising potential for advancements in material engineering and performance optimization.
Topics & Concepts
Materials scienceComposite numberUltimate tensile strengthStiffnessComposite materialModulusElongationSpecific modulusYoung's modulusAluminum Alloys Composites PropertiesAdvanced ceramic materials synthesisMXene and MAX Phase Materials