A kind of high strength and toughness high entropy alloy and preparation method thereof
A high-entropy alloy, high-strength technology, applied in the field of alloy materials, can solve problems such as the inability to meet the needs of working conditions, and achieve the effect of easy molding and low price
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0024] A method for preparing high-strength and tough high-entropy alloys, comprising the following steps:
[0025] Step 1), get the following raw materials by mass fraction: Ni: 33%-39%, Cr: 16-24%, W: 7-15%, Fe: 25-35%, Ti: 1%-7%, and the rest are Impurities: the above raw materials are mixed to prepare spherical alloy powder, the purity of spherical alloy powder is ≥99.9%, and the particle size is 15-53 μm;
[0026] Specifically, the elemental powders of Ni, Cr, W, Fe, and Ti elements with a purity of ≥99.9% are uniformly mixed according to the ratio of element content, and ball milled to prepare spherical alloy powder; Ni, Cr, W, and Ti with a purity of ≥99.9% The Fe and Ti blocks are smelted according to the ratio of element content to prepare rods, and then the rods are prepared into spherical alloy powders with gas atomization or rotating electrode method;
[0027] Step 2), the alloy powder prepared in step 1) is placed in a drying oven for drying and deoxidation, wher...
Embodiment 1
[0034] Step 1), take the following materials according to the mass fraction: Ni: 33, Cr: 20, W: 14, Fe: 28, Ti: 5, prepare the above materials and prepare them into spherical alloy powder, the purity of which is ≥99.9%, and the particle size Both are 15μm;
[0035] Step 2), the alloy powder prepared in step 1) is placed in a drying oven for drying and deoxidation, wherein the vacuum degree is 1×10 -2 Pa, the temperature is 60°C, the time is 7h, then naturally cool to room temperature, and store in vacuum packaging;
[0036] Step 3), put the alloy powder prepared in step 2) in the powder cylinder of the 3D printer, vacuumize the cavity to 98ppm, protect the cavity with Ar gas, wherein the oxygen content of the cavity is 760ppm, the pressure of the molding chamber is 17mba, and the working Pressure 3.8bar, blowing speed 950r / min;
[0037] Step 4), set the power of the 3D printer to 250W, the scanning speed to 1500mm / s, the rotation angle to 30°, the scanning distance to 80μm, ...
Embodiment 2
[0040] The following materials are taken according to the mass fraction: Ni: 33, Cr: 20, W: 14, Fe: 28, Ti: 5, the above materials are prepared and prepared into spherical alloy powder, the purity of which is ≥99.9%, and the particle size is 20 μm;
[0041] Step 2), the alloy powder prepared in step 1) is placed in a drying oven for drying and deoxidation, wherein the vacuum degree is 1×10 -2 Pa, the temperature is 70°C, the time is 6h, then naturally cool to room temperature, and store in vacuum packaging;
[0042] Step 3), put the alloy powder prepared in step 2) in the powder cylinder of the 3D printer, vacuumize the cavity to 100ppm, protect the cavity with He gas, wherein the oxygen content in the cavity is 755ppm, the pressure of the molding chamber is 17mba, and the working Pressure 3.9bar, blowing speed 1020r / min;
[0043] Step 4), set the power of the 3D printer to 250W, the scanning speed to 1500mm / s, the rotation angle to 30°, the scanning distance to 80μm, the amo...
PUM
| Property | Measurement | Unit |
|---|---|---|
| density | aaaaa | aaaaa |
| tensile strength | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More