Method for constructing curved grain boundary in dissimilar alloy transition area through additive manufacturing
The invention relates to the field of dissimilar alloy processing, in particular to a method for constructing a bent grain boundary in a dissimilar alloy transition area through additive manufacturing, which comprises the following steps of: 1, melting a dissimilar alloy material through energy prov...
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| creator | YAO LIMING LI LONGQIU LU JIA ZHOU DEKAI ZHANG DIANJIN QIAO JING |
| description | The invention relates to the field of dissimilar alloy processing, in particular to a method for constructing a bent grain boundary in a dissimilar alloy transition area through additive manufacturing, which comprises the following steps of: 1, melting a dissimilar alloy material through energy provided by a concentrated heat source to form a molten pool; secondly, the dissimilar alloy melt is driven by micro fluid force to form regular alloy component distribution, and additive manufacturing induced bending grain boundaries are achieved; the microfluid force acting effect is limited by the transverse-longitudinal ratio Dm/Wm of the molten pool, Dm is the distance from the bottom of the molten pool to the top of the base plate, and Wm is the width of the molten pool; the premise of constructing the curved grain boundary is curved alloy component distribution, and 0.25 < = Dm/Wmlt; 0.55% of the total weight; for single-layer single-track additive manufacturing, the alloying degree (DoA) is controlled, and addi |
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| 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 |
| title | Method for constructing curved grain boundary in dissimilar alloy transition area through additive manufacturing |
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