Abstract: An aluminum alloy material includes 1.0 wt % to 13.0 wt % of Si, 0.2 wt % to 1.4 wt % of Fe, 0.2 wt % to 0.8 wt % of Ni, and the remainder being Al and inevitable impurities. The aluminum alloy material can be 3D printed or die-casted to form an aluminum alloy object with a high thermal conductivity.

Abstract: An aluminum alloy material includes 1.2 wt % to 3.0 wt % of Si, 0.1 wt % to 0.8 wt % of Mg, 0.2 wt % to 2.0 wt % of Cu, 0.5 wt % to 2.5 wt % of Zn, 0.2 wt % to 2.0 wt % of Ti, and the remainder being Al and inevitable impurities. The powder of the aluminum alloy material can be processed to form an aluminum alloy object. The aluminum alloy object may further include an anodized film on its surface.

Abstract: An aluminum alloy powder for laser laminated manufacturing includes Si: 2.0-4.5 wt %; Mg: 0.1-1.3 wt %; Fe: 0.07-0.65 wt %; Cu: 0.35 wt % or less; Cr: 0.02-0.32 wt %; Zn: 0.23 wt % or less; Ti: 0.23 wt % or less; Mn: 0.13 wt % or less; and the rest is aluminum. The aluminum alloy powder further includes inevitable impurities.

Abstract: An aluminum alloy wheel for a vehicle is provided, which includes: a wheel central portion, a rim portion, and a plurality of radial elements, wherein the aluminum alloy wheel is processed by centrifugal casting and forging to form a central portion with a morphology exhibiting a grain size variation with decreasing gradient in a lateral direction from an inner side of the wheel central portion to an outer side thereof.

Abstract: An aluminum alloy wheel for a vehicle is provided, which includes: a wheel central portion, a rim portion, and a plurality of radial elements, wherein the aluminum alloy wheel is processed by centrifugal casting and forging to form a central portion with a morphology exhibiting a grain size variation with decreasing gradient in a lateral direction from an inner side of the wheel central portion to an outer side thereof.

Abstract: An aluminum-cobalt-chromium-iron-nickel-silicon alloy has atomic percentages of 4-12 at % aluminum, 15-25 at % cobalt, 25-35 at % chromium, 4-8 at % iron, 15-25 at % nickel, 10-25 at % silicon, wherein the atomic percentage of aluminum plus silicon is between 18-32 at %. The disclosure applies the alloy design to develop a low-aluminum Al—Co—Cr—Fe—Ni—Si alloy composition, and has high-temperature hardness, high wear resistance, corrosion resistance and high temperature oxidation resistance.

Abstract: A metal matrix composite material includes 60-90 wt. % of aluminum alloy powders and 10-40 wt. % Fe-based amorphous alloy powders. The aluminum alloy powders are used as the matrix of the metal matrix composite material, and the Fe-based amorphous alloy powders include FeaCrbMocSidBeYf, wherein 48 at. %?a?50 at. %, 21 at. %?b?23 at. %, 18 at. %?c?20 at. %, 3 at. %?D?5 at. %, 2 at. %?c?4 at. %, and 2 at. %?f?4 at. %.

Abstract: An aluminum-cobalt-chromium-iron-nickel-silicon alloy has atomic percentages of 4-12 at % aluminum, 15-25 at % cobalt, 25-35 at % chromium, 4-8 at % iron, 15-25 at % nickel, 10-25 at % silicon, wherein the atomic percentage of aluminum plus silicon is between 18-32 at %. The disclosure applies the alloy design to develop a low-aluminum Al—Co—Cr—Fe—Ni—Si alloy composition, and has high-temperature hardness, high wear resistance, corrosion resistance and high temperature oxidation resistance.

Abstract: Provided is a forming method of a metal layer suitable for a 3D printing process. The method includes the steps of (1) providing first metal particles on a substrate to form a first layer; (2) performing a first pre-heat treatment on the first layer; (3) applying an oxide-removing agent on selected first metal particles in the first layer to remove metal oxides; (4) providing second metal particles on the first layer to form a second layer; (5) performing a second pre-heat treatment on the second layer; (6) applying the oxide-removing agent on selected second metal particles in the second layer to remove metal oxides; repeating (1) to (6) until a latent part is formed; performing a first heat treatment on the first and second metal particles of the latent part to form a near shape; and performing a second heat treatment on the near shape to form a sintered body.

Abstract: A metal-ceramic composite material and a method for forming the same are provided. The metal-ceramic composite material includes a metal body, a plurality of metal oxide nanoparticles and a plurality of ceramic particles. The metal body includes a metal material having a first surface energy. The metal oxide nanoparticles and the ceramic particles are dispersed in the metal body. The ceramic particles have a second surface energy that is higher than the first surface energy.

Abstract: A metal matrix composite material includes 60-90 wt. % of aluminum alloy powders and 10-40 wt. % Fe-based amorphous alloy powders. The aluminum alloy powders are used as the matrix of the metal matrix composite material, and the Fe-based amorphous alloy powders include FeaCrbMocSidBeYf, wherein 48 at. %?a?50 at. %, 21 at. %?b?23 at. %, 18 at. %?c?20 at. %, 3 at. %?D?5 at. %, 2 at. %?c?4 at. %, and 2 at. %?f?4 at. %.

Abstract: A metal matrix composite material includes 60-90 wt. % of aluminum alloy powders and 10-40 wt. % Fe-based amorphous alloy powders. The aluminum alloy powders are used as the matrix of the metal matrix composite material, and the Fe-based amorphous alloy powders include FeaCrbMocSidBeYf, wherein 48 at. %?a?50 at. %, 21 at. %?b?23 at. %, 18 at. %?c?20 at. %, 3 at. %?D?5 at. %, 2 at. %?e?4 at. %, and 2 at. %?f?4 at. %.

Abstract: Provided is a forming method of a metal layer suitable for a 3D printing process. The method includes the steps of providing a plurality of metal particles on a substrate; applying an oxide-removing agent to the metal particles to remove metal oxides on the metal particles; at a first temperature, performing a first heat treatment on the metal particles for which the metal oxides are removed to form a near shape; and at a second temperature, performing a second heat treatment on the near shape to form a sintered body. The first temperature is lower than the second temperature.

Abstract: An aluminum alloy powder and a manufacturing method of an aluminum alloy object are provided. The aluminum alloy powder includes 96.5-99 wt % of a combination of Al, Si, Cu and Mg and the remainder including Ni and Mn. Moreover, the aluminum alloy powder includes an alloy core and a native oxide layer covering the alloy core.

Abstract: A composite powder is provided. The composite powder comprises 80-97 wt % of carbide and 3-20 wt % of blending metal powder comprising cobalt and a first metal powder, wherein the first metal powder is formed of one of aluminum, titanium, iron, nickel, or a combination thereof, and the amount of cobalt is 90-99% of total blending metal powder.

Abstract: An alloy casting material is provided, which includes 97 to 99 parts by weight of Al and Si, 0.25 to 0.4 parts by weight of Cu, and 0.15 to 1.35 parts by weight of a combination of at least two of Mg, Ni, and Ti. The alloy casting material can be sprayed by gas to form powders, which are melted by laser-additive manufacturing to form a melted object. The melted object can be processed by an ageing heat treatment to complete an alloy object.

Abstract: A composite powder is provided. The composite powder comprises 80-97 wt % of carbide and 3-20 wt % of blending metal powder comprising cobalt and a first metal powder, wherein the first metal powder is formed of one of aluminum, titanium, iron, nickel, or a combination thereof, and the amount of cobalt is 90-99% of total blending metal powder.

Abstract: An ultra-hard composite material and a method for manufacturing the same, including mixing a metal carbide powder and a multi-element high-entropy alloy powder to form a mixture, green compacting the mixture, and sintering the mixture to form the ultra-hard composite material. The described multi-element high-entropy alloy consists of five to eleven principal elements, with every principal element occupying a 5 to 35 molar percentage of the alloy.

Abstract: A multi metal base thermal resistance alloy and a mold with the multi metal base thermal resistance alloy layer are provided. The weight percent of each element in this alloy is less than 45%. The structure of the alloy is an amorphous structure and the phonon thermal conductivity of the amorphous structure is intrinsically low. Therefore, the alloy is a metal material with low thermal conductivity coefficient and high thermal stability, which can increase the heat retaining property of the die casting mold, enhance the forming yield and stability of a metal sheet with a low fusion point, and is suitable to be used as a thermal-resistance coating material on die casting molds.

Abstract: The disclosed is an ultra-hard composite material. The method for manufacturing the ultra-hard composite material includes mixing a metal carbide powder and a multi-element high-entropy alloy powder to form a mixture, green compacting the mixture, and sintering the mixture to form the ultra-hard composite material. The described multi-element high-entropy alloy consists of five to eleven principal elements, with every principal element occupying a 5 to 35 molar percentage of the alloy.