Damage tolerance type titanium alloy TC4-DT forming process method based on selective laser melting

• Main Authors: BAI BING, CI SHIWEI, HU JIAQI, CAI XIAOYE, DONG DINGPING
• Format: Patent
• Language: Chinese; English
• Published: 11.04.2023
• 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; ALLOYS; CASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

The invention relates to the technical field of additive manufacturing, in particular to a selective laser melting-based damage tolerance type titanium alloy TC4-DT forming process method which comprises the following specific steps: S1, preparing TC4-DT titanium alloy powder by a plasma rotating electrode method; s2, converting a format; s3, performing slicing treatment; s4, setting process parameters; s5, preparing equipment; s6, printing a test piece; s7, removing the powder and taking out the sample; s8, linear cutting is carried out; s9, observing a metallographic structure; s10, forming a mechanical property sample model of the component; S11, annealing the sample; s12, solid solution aging; s13, internal pores are eliminated; s14, mechanical testing; tC4-DT titanium alloy powder prepared through a plasma rotating electrode method is adopted as a raw material, optimal process parameters are optimized through an orthogonal test method to obtain a high-density and low-defect sedimentary state workpiece, t