Patent ID: 8012275

Claim:
A method for manufacturing a composite-metal-forming material, comprising the steps of: preparing a metal material having a Mg alloy or an Al alloy; preparing, as an additive material, a carbon nano-composite material formed by mixing a carbon nanomaterial and a metal powder to obtain a carbon nano-composite metal powder, compacting the carbon nano-composite metal powder into a solid to obtain a preform, heating the preform in a vacuum, inert gas, or non-oxidizing gas atmosphere to a temperature in a region where a solid and a liquid are both present, and applying pressure to the heated preform; heating the metal material to a temperature in a region where a solid and a liquid are both present to thereby yield a semi-molten metal material in a semi-molten state; introducing the additive material to the semi-molten metal material and performing kneading to obtain a composite metal material; and heating the composite metal material to a solution temperature of the metal material and performing a solution treatment to thereby yield a composite-metal-forming material.