The Mechanical Properties of Al3Ti/6061 Al Composite Materials under the Magnetic Field

Abstract

Abstract. Reactants are the fluorine potassium titanate (K 2 TiF 6 ), in situ synthesis of the melt reaction method and magnetic field is applied in the reaction ,under the same conditions, with no external field, under the magnetic field obtained Al 3 Ti/6061 composite materials for mechanical properties of contrast ;Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis showed that: under the magnetic fields generated particles Al 3 Ti, smaller particles, the size is about 1-3μm diffuse evenly distributed in the aluminum matrix; Mechanical properties of composites research shows that tensile strength σ b and elongation rate are improved with the magnetic field, Al 3 Ti/6061 composite materials tensile fracture surface shows that the fracture is a plastic fracture. IntroductionNowadays, composite materials are widely used in aviation, aerospace, marine and other fields. This required to be tensile, compressive strength, wear resistance, good dimensional stability and thermal conductivity. Particle reinforced aluminum matrix composite materials with high specific strength and specific stiffness, excellent mechanical and physical properties, especially the in situ reaction of raw particles reinforced aluminum matrix composites, compared with the traditional plus method, with a small particle size, particle surface without pollution, clean interface, the interface combined with good and a series of advantages, and thus praised as breakthrough new technology and highly valued [1][2][3]. Al-K 2 TiF 6 new system is studied in magnetic field in situ by the reaction of Al 3 Ti particle reinforced aluminum matrix composites.the magnetic field in the metal solidification process for the development of new materials, optimize the material preparation process, improve the comprehensive quality of the metal material products and solve the technical problems of metal materials in the preparation process to provide new means and methods of its solidification process in materials the application will become the new direction of materials research [4][5][6]. Be used in the reaction and found to respond more fully, more uniform particle size distribution, and the reaction without stirring, to avoid the "skin effect" due to uneven force, simple process.