Method for friction stir assisted laser additive manufacturing of heterogeneous metal material

• Main Authors: LU HAIFEI, LYU JIMING, FANG MIN, LU JINZHONG, LUO KAIYU
• Format: Patent
• Language: Chinese; English
• Published: 21.03.2023
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; CASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; POWDER METALLURGY; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM; WORKING METALLIC POWDER

The invention relates to a method for friction stir assisted laser additive manufacturing of a heterogeneous metal material. Firstly, a heterostructure is designed or selected according to the function and performance requirements of a metal material; thirdly, a three-dimensional digital model of the heterostructure is obtained, and the position and area needing stirring friction machining in the laser additive manufacturing process are determined according to the characteristics of the heterostructure; then, a combined process of laser additive manufacturing and stirring friction machining is adopted, additive manufacturing is carried out on the substrate firstly, then local stirring friction machining is carried out, and the steps are repeated in this way, so that additive manufacturing of the heterostructure is completed; and finally, integrally taking down the heterogeneous metal material for additive manufacturing from the substrate by linear cutting or machining. Friction stir processing treatment is in