Preparing method for powder metallurgy high-entropy alloy based composite material
A high-entropy alloy and composite material technology, which is applied in the field of powder metallurgy material preparation, can solve the problems of difficult to control the phase composition of composite materials, reduce the strength of composite materials, and difficult to ensure high-purity high-entropy alloys of composite materials, etc. Entropy alloy matrix interface is well bonded, high specific rigidity and wear resistance and corrosion resistance, and the effect of reinforcement and matrix interface bonding is good
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[0048] Example 1
[0049] Prepared into a volume fraction of 5% TiB 2 Enhanced Al 20 Fe 20 Cr 20 Co 20 Ni 20 High-entropy alloy-based composite material. 1) Preparation of spherical Al 20 Fe 20 Cr 20 Co 20 Ni 20 High-entropy alloy powder (mole fraction), the raw material is made of bulk metal materials such as high-purity Al, high-purity Fe, high-purity Cr, high-purity Co, and high-purity Ni. It is melted into a melt at 1600℃ in an intermediate frequency induction melting furnace. High-purity argon with a flow rate of 200L / s and a pressure of 6MPa, 10 6 It is atomized into spherical high-entropy alloy powder with a diameter of 30 to 1 micron under K / s cooling rate. 2) According to the volume fraction of 5% TiB 2 And 95% Al 20 Fe 20 Cr 20 Co 20 Ni 20 High-entropy alloy weighing TiB with an average diameter of 1 micron 2 Powder and average diameter of 10 microns Al 20 Fe 20 Cr 20 Co 20 Ni 20 High-entropy alloy powder, the powder is uniformly mixed on a ball mill, and then sintered ...
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[0050] Example 2
[0051] Prepared into a volume fraction of 25% TiB 2 Enhanced Al 25 Fe 15 Cr 15 Co 15 Ni 20 Ti 5 Cu 5 High-entropy alloy-based composite material. 1) Preparation of spherical Al 25 Fe 15 Cr 15 Co 15 Ni 20 Ti 5 Cu 5 High-entropy alloy powder (molar fraction), the raw materials are made of bulk metal materials such as high-purity Al, high-purity Fe, high-purity Cr, high-purity Co, high-purity Ni, high-purity Ti, and high-purity Cu, in an intermediate frequency induction melting furnace 1800 Melt into a melt at ℃, the melt is in high purity argon with a gas flow of 80L / s and a pressure of 4.5MPa, 10 4 It is atomized into spherical high-entropy alloy powder with a diameter of 50-5 microns at a cooling rate of K / s. 2) According to the volume fraction 25% TiB 2 And 75% Al 25 Fe 15 Cr 15 Co 15 Ni 20 Ti 5 Cu 5 High-entropy alloy weighing TiB with an average diameter of 10 microns 2 Powder and Al with an average diameter of 20 microns 25 Fe 15 Cr 15 Co 15 Ni 20 Ti 5 Cu 5...
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[0052] Example 3
[0053] Prepared into a volume fraction of 20% TiB 2 Enhanced Al 15 Fe 25 Cr 20 Co 15 Ni 15 Ti 10 High-entropy alloy-based composite material. 1) Preparation of spherical Al 15 Fe 25 Cr 20 Co 15 Ni 15 Ti 10 High-entropy alloy powder (mole fraction), the raw materials are made of bulk metal materials such as high-purity Al, high-purity Fe, high-purity Cr, high-purity Co, high-purity Ni, and high-purity Ti, which are melted in an intermediate frequency induction melting furnace at 2000°C The melt is in high purity argon with a gas flow of 140L / s and a pressure of 6MPa, 10 5 It is atomized into spherical high-entropy alloy powder with a diameter of 40 to 1 micron at a cooling rate of K / s. 2) 20% TiB according to volume fraction 2 And 80% Al 15 Fe 25 Cr 20 Co 15 Ni 15 Ti 10 High-entropy alloy weighing TiB with an average diameter of 5 microns 2 Powder and average diameter of 15 microns Al 15 Fe 25 Cr 20 Co 15 Ni 15 Ti 10 High-entropy alloy powder, the powder is unif...
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