Nickel-titanium shape memory alloy and laser near-net forming preparation method thereof
A technology of laser near-net shaping and laser near-net shaping, applied in additive manufacturing, additive processing, etc., to achieve stable performance, cheap and easy-to-obtain raw materials, and good alloy construction quality
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Embodiment 1
[0032] A nickel-titanium shape memory material, the schematic diagram of its components is shown in figure 1 , the specific preparation method comprises the following steps:
[0033] 1) Select Ni 50.73 Ti 49.2 Composition of shape memory alloy powder as printing material;
[0034] 2) The selected size is 150×150×10cm 3 The nickel-titanium alloy is used as the substrate, the surface of the substrate is first polished with sandpaper, and then the surface oil stains are cleaned with absolute ethanol;
[0035] 3) First, import the 3D model into the laser near-net-shape technology operating system, and fill the building cabin with high-purity nitrogen to prevent the sample from oxidizing during the printing process; then, weigh an appropriate amount of nickel-titanium powder, the average particle size of the powder is 85.73 μm, put the weighed nickel-titanium powder into the powder feeding bucket, and set the working distance of the lowest end of the laser processing head relat...
Embodiment 2
[0039] A nickel-titanium shape memory material, the schematic diagram of its components is shown in figure 1 , the specific preparation method comprises the following steps:
[0040] 1) Select Ni 50.93 Ti 49.07 Composition of shape memory alloy powder as printing material
[0041] 2) The selected size is 150×150×10cm 3 The Nb alloy is used as the substrate, the surface of the substrate is first polished with sandpaper, and then the surface oil stains are cleaned with absolute ethanol;
[0042] 3) First, import the 3D model into the laser near-net-shape technology operating system, and fill the building cabin with high-purity nitrogen to prevent the sample from oxidizing during the printing process; then, weigh an appropriate amount of nickel-titanium powder, the average particle size of the powder is 86.79μm, put the weighed nickel-titanium powder into the powder feeding bucket, and set the working distance of the lowest end of the laser processing head relative to the sur...
Embodiment 3
[0046] A nickel-titanium shape memory material, the schematic diagram of its components is shown in figure 1 , the specific preparation method comprises the following steps:
[0047] 1) Select Ni 51.27 Ti 48.73 Composition of shape memory alloy powder as printing material
[0048] 2) The selected size is 150×150×10cm 3 The nickel-titanium alloy is used as the substrate, the surface of the substrate is first polished with sandpaper, and then the surface oil stains are cleaned with absolute ethanol;
[0049] 3) First, import the 3D model into the laser near-net-shape technology operating system, and fill the building cabin with high-purity nitrogen to prevent the sample from oxidizing during the printing process; then, weigh an appropriate amount of nickel-titanium powder, the average particle size of the powder is 87.65μm, put the weighed nickel-titanium powder into the powder feeding bucket, and set the working distance of the lowest end of the laser processing head relati...
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Abstract
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