RE Al-10Mg alloy preparation and characterization

Title: RE Al-10Mg alloy preparation and characterization
　　Author: Yang Xiaopeng
　　Degree-granting unit: Changchun University of Technology
　　Keywords: Al-10Mg alloy;; extrusion;; microstructure;; mechanical properties
　　Summary:
　　Preparation of cast Al-10Mg and Al-10Mg-0.2La (Mg, La, wt.%) Alloy after extrusion and after extrusion to obtain a good bar and extruded sheet. Through the alloy microstructure analysis, X-ray diffraction analysis, analysis of tensile mechanical properties, hardness analysis, fracture analysis scanning, corrosion and wear performance analysis, studied the compressive deformation of the alloy structure and mechanical properties.
　　The results showed that: after solution treatment and after extrusion, the distribution along the grain boundaries most of the β phase to α-Al solid Neodymium magnets solution matrix. After extrusion alloy finer grain size, and the virtual elimination of left-cast alloy shrinkage, mechanical properties has been significantly improved. Extruded alloy deformed at room temperature Brinell hardness (HB) in excess of 80. The tensile strength of the cast alloy is about 280MPa, while the deformation of the alloy extruded at 350 ~ 390MPa tensile strength between the increase of about 25 ~ 39%, showing extrusion alloy with higher strength. Compared with cast alloy, extruded alloy after deformation the yield strength of 190MPa or so, increased by about 14%, showing extrusion alloy with excellent toughness. Elongation of the alloy after extrusion rate has improved significantly, indicating extrusion alloy with good ductility. Rare earth elements La addition on the mechanical properties of alloys is not http://www.chinamagnets.biz/Neodymium/Ball-Neodymium-Magnets.php very obvious. Alloy fracture analysis showed that the fracture mode of the cast alloy mainly brittle fracture, and fracture mode of alloy extrusion for the ductile - brittle fracture mixed. In addition, the compressive deformation of the alloy has good corrosion resistance and wear resistance.
　　Degree Year: 2010