Powder for high-entropy alloy-based composite material modified layer prepared on ferrous alloy surface
A high-entropy alloy and composite material technology is applied in the field of preparing powder for a modified layer of a high-entropy alloy-based composite material on the surface of an iron-based alloy, and can solve the problem that the thermophysical properties of the modified layer material and the base material do not match, and the modified layer Cracking, poor bonding of matrix materials, etc., to achieve excellent physical and chemical properties and improve performance
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[0044] Example 1
[0045] Preparation of FeCoCrAlCu high-entropy alloy modified layer on the surface of Q235 steel substrate.
[0046] The FeCoCrAlCu alloy powder is prepared in an equimolar ratio, and the powder prepared with pure metal powder is mixed, ground and dried, and then pre-placed on the surface of the Q235 steel substrate. The thickness of the preset alloy powder is 0.5 to 1.5 mm. The ZQM-SD 500W Nd:YAG solid-state pulsed laser is used for single-pass and multi-pass irradiation. The specific process parameters are: voltage 380V, current 110-150A, spot diameter 1.2mm, scanning speed 3-5mm / s. Irradiated by DLA61300 semiconductor laser, the laser output power is 2kW, the laser wavelength is 980±10nm, the spot diameter is 3mm, and the scanning speed is 5-40mm / s. The scanning overlap rate of the large area laser beam is 50%, the flow rate of the protective gas argon during the laser alloying process is 10-20L / min, and the thickness of the laser alloying layer obtained is 0....
Example Embodiment
[0047] Example 2
[0048] Preparation of modified layer of FeCoCrAlCu+10Wt%TiC high-entropy alloy-based composite material on the surface of Q235 steel substrate.
[0049] The FeCoCrAlCu high-entropy alloy powder is prepared according to the equimolar ratio, and the TiC powder of 10Wt% powder is added. The prepared powders are mixed, ground, dried, and then pre-placed on the surface of the Q235 steel substrate. The pre-prepared alloy powder has a thickness of 0.5 to 1.5 mm. The ZQM-SD 500W Nd:YAG solid-state pulsed laser is used for single-pass and multi-pass laser irradiation. The specific process parameters are: voltage 380V, current 120-180A, spot diameter 1.2mm, scanning speed 3-5mm / s. It is irradiated with DLA61300 semiconductor laser, the laser power is 2kW, the laser wavelength is 980±10nm, the spot diameter is 3mm, and the scanning speed is 5-40mm / s. The scanning overlap rate of the large-area laser beam is 50%, the flow of the protective gas argon during the laser allo...
Example Embodiment
[0050] Example 3
[0051] Preparation of modified layer of FeCoCrAlCu+30Wt%TiC high-entropy alloy-based composite material on the surface of Q235 steel substrate.
[0052] The FeCoCrAlCu high-entropy alloy powder is prepared in an equimolar ratio, and 30Wt% TiC powder is added. The prepared powders are mixed, ground, dried, and then pre-placed on the surface of the Q235 steel substrate. The pre-prepared alloy powder has a thickness of 0.5 to 1.5 mm. The ZQM-SD 500W Nd:YAG solid-state pulsed laser is used for single-pass and multi-pass laser irradiation. The specific process parameters are: voltage 380V, current 120-180A, spot diameter 1.2mm, scanning speed 3-5mm / s. It is irradiated with DLA61300 semiconductor laser, the laser power is 2kW, the laser wavelength is 980±10nm, the spot diameter is 3mm, and the scanning speed is 5-40mm / s. The scanning overlap rate of the large area laser beam is 50%, the flow rate of the protective gas argon during the laser alloying process is 10-2...
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