Method for crystallizing weld joint area and base metal area of titanium or titanium alloy welded plate

• Main Authors: ZHANG YUSHENG, WU JINPING, ZHAO JING, XIN CHAO, LI CHUNCHEN, PAN XIAOLONG
• Format: Patent
• Language: Chinese; English
• Published: 11.11.2022
• Subjects: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; COMBINED OPERATIONS; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MACHINE TOOLS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; OTHER WORKING OF METAL; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; UNIVERSAL MACHINE TOOLS; WELDING; WORKING BY LASER BEAM

The invention discloses a titanium or titanium alloy welding plate weld joint area and base metal area homogeneous crystallization method which comprises the following steps: 1, welding two titanium plates by adopting vacuum electron beam welding to obtain a welding plate; secondly, the welded plate is subjected to high-temperature heat treatment, and a heat-treated welded plate is obtained; thirdly, the heat treatment welding plate is rolled, and a rolled welding plate is obtained; and fourthly, the rolled and welded plate is annealed, and the homogeneous crystallization plate is obtained. Two titanium plates are welded through vacuum electron beam welding, then high-temperature heat treatment, rolling and annealing are conducted in sequence, the homogeneous crystallization plate is obtained, the size and orientation of 99% or above of grains in the welding area and the base metal area of the homogeneous crystallization plate are consistent, the grain size grade is 10 or above, and the thickness of the homog