Method for laser composite additive manufacturing of copper-steel dissimilar metal and application

• Main Authors: WEN ZHONGYU, ZHANG ZHIGUO, ZHOU SHENGFENG, YI YANLIANG, XU FEI, ZENG DELONG, REN PAN
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2024
• 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; ALLOYS; CASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; PERFORMING OPERATIONS; POWDER METALLURGY; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

The invention discloses a method for manufacturing copper-steel dissimilar metal through laser composite additive manufacturing and application. The method comprises the steps that a copper alloy is prepared through laser powder bed melting and serves as a base material; laser-induction composite cladding is adopted, an in-situ nanometer amorphous oxide enhanced copper-based monotectic alloy transition layer is prepared on the surface of a base material, stainless steel is prepared on the surface of the in-situ nanometer amorphous oxide enhanced copper-based monotectic alloy transition layer, and a copper alloy-copper-based monotectic alloy transition layer-stainless steel structure is formed. According to the method, the laser powder bed melting technology and the laser-induction composite cladding technology are combined, the copper-based monotectic alloy serves as a transition layer between the copper alloy and the stainless steel, the problem that cracks, looseness, air holes and other defects are prone t