A laser manufacturing process for preparing Ni-based alloy gradient material on titanium alloy
A gradient material and manufacturing process technology, which is applied in the laser manufacturing process and the preparation of high-temperature-resistant layers on the surface of titanium alloys, can solve problems such as large differences in thermal expansion coefficients, impossibility of direct bonding, and poor material compatibility, achieving small residual stress, The effect of small deformation and small thermal influence
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[0012] The technical solution of the present invention will be described in further detail below in conjunction with examples:
[0013] The steps of this method are:
[0014] (1) Ni-based alloy and intermediate transition layer powder material are prepared by argon atomization powder making method. The intermediate layer material is two kinds of V-Cr alloy and stainless steel alloy respectively, and the Cr content volume fraction range of V-Cr alloy is 8.0%. ~10.0%, the C content of stainless steel is controlled below 0.03%, the Cr content is 10%~15%, and the Ni content is controlled below 5%. The particle size of the powder is 150 mesh to 325 mesh;
[0015] (2) Clean the surface before preparation, use a steel wire wheel to polish and remove the oxide film on the titanium alloy surface, visually check to expose the metal background color, and then scrub it with acetone;
[0016] (3) First, a 0.3-0.5 mm thick V-Cr alloy layer is prepared on the titanium alloy substrate by la...
example 1
[0019] Preparation of GH4169 High Temperature Gradient Material on TC4 Titanium Alloy Plate
[0020] 1. TC4 titanium alloy preparation
[0021] Processing TC4 titanium alloy plate, the size is 50mm×50mm×10mm.
[0022] 2. Implementation process
[0023] (1) GH4169 powder and V-Cr and stainless steel interlayer alloy powder were prepared by argon atomization powder making method, the volume percentages of V-Cr alloy were 91.3% and 8.7% respectively, the C content of stainless steel was 0.03%, and the Cr content was 13% %, the Ni content is 5%, and the powder particle size is 150 mesh to 325 mesh;
[0024] (2) Clean the surface before preparation, use a steel wire wheel to polish and remove the oxide film on the surface of the TC4 titanium alloy plate, visually check to expose the metal background, and then scrub it with acetone;
[0025] (3) Firstly, a 50mm×50mm×0.5mm V-Cr alloy layer was prepared on the titanium alloy substrate by laser cladding, and then a 50mm×50mm×0.5mm s...
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