| 摘要 |
PROBLEM TO BE SOLVED: To promote the utilization of an aluminum alloy material for parts for vehicles, parts for buildings or the like by improving its thermal conductivity and tensile strength. SOLUTION: At least one kind selected from Si, Mg and Mn as components contained in an aluminum alloy material is compounded with carbon nanofiber, and the carbon nanofiber is incorporated into an Al base material. Alternatively, Si-coated carbon nanofiber is infiltrated into the surface of the extrusion material of an aluminum alloy material. The aluminum alloy material in which, in the Si-containing aluminum alloy material, the Si is compounded into the carbon nanofiber is provided. Further, carbon nanofiber is mixed into a molten aluminum alloy material in 0.1 to 5 vol.%, and they are kneaded into a billet, and the billet is subjected to extrusion molding to obtain the extrusion molded material of an aluminum alloy material. |
