Aluminum alloy conductor wire, aluminum alloy stranded wire, coated wire, wire harness and method of manufacturing aluminum alloy conductor wire

A wire harness comprising:

• a coated wire including a coating layer at an outer periphery of one of an aluminum alloy conductor wire and an aluminum alloy stranded wire, the aluminum alloy stranded wire comprising a plurality of the aluminum alloy conductor wires which are stranded together;
• and
• a terminal fitted at an end portion of the coated wire, the coating layer being removed from the end portion,
• wherein the aluminum alloy conductor wire has a composition comprising Mg:
• 0.1 mass % to 1.0 mass %, Si:
• 0.1 mass % to 1.20 mass %, Fe:
• 0.01 mass % to 1.40 mass %, Zr:
• 0.01 mass % to 0.50 mass %, Ti:
• 0 mass % to 0.100 mass %, B:
• 0 mass % to 0.030 mass %, Cu:
• 0 mass % to 1.00 mass %, Ag:
• 0 mass % to 0.50 mass %, Au:
• 0 mass % to 0.50 mass %, Mn:
• 0 mass % to 1.00 mass %, Cr:
• 0 mass % to 1.00 mass %, Hf:
• 0 mass % to 0.50 mass %, V:
• 0 mass % to 0.50 mass %, Sc:
• 0 mass % to 0.50 mass %, Co:
• 0 mass % to 0.50 mass %, Ni:
• 0 mass % to 0.50 mass %, and the balance:
• Al and inevitable impurities, where Ti, B, Cu, Ag, Au, Mn, Cr, Hf, V, Sc, Co and Ni are arbitrary additive components of which at least one component may be contained or none of the components may be contained, and
• a density of a compound having a particle size of 0.5 to 5.0 μm and containing Fe is 1 to 300 particles/10000 μm2,
• a Mg/Si ratio, which is a ratio of Mg in mass % to Si in mass %, being greater than 1.

A method of manufacturing an aluminum alloy conductor wire having a composition comprising Mg:

• 0.1 mass % to 1.0 mass %, Si:
• 0.1 mass % to 1.20 mass %, Fe:
• 0.01 mass % to 1.40 mass %, Zr:
• 0.01 mass % to 0.50 mass %, Ti:
• 0 mass % to 0.100 mass %, B:
• 0 mass % to 0.030 mass %, Cu:
• 0 mass % to 1.00 mass %, Ag:
• 0 mass % to 0.50 mass %, Au:
• 0 mass % to 0.50 mass %, Mn:
• 0 mass % to 1.00 mass %, Cr:
• 0 mass % to 1.00 mass %, Hf:
• 0 mass % to 0.50 mass %, V:
• 0 mass % to 0.50 mass %, Sc:
• 0 mass % to 0.50 mass %, Co:
• 0 mass % to 0.50 mass %, Ni:
• 0 mass % to 0.50 mass %, and the balance:
• Al and inevitable impurities, where Ti, B, Cu, Ag, Au, Mn, Cr, Hf, V, Sc, Co and Ni are arbitrary additive components of which at least one component may be contained or none of the components may be contained, a density of a compound having a particle size of 0.5 to 5.0 μm and containing Fe being 1 to 300 particles/10000 μm2,
• a Mg/Si ratio, which is a ratio of Mg in mass % to Si in mass %, being greater than 1,
• the method comprising:
• forming rough drawing wire through hot working subsequent to melting and casting, and thereafter carrying out processes including at least a wire drawing process, a solution heat treatment process and an aging heat treatment process,
• wherein a cooling rate during the casting is 0.1° C./s to 5° C./s.

A method of manufacturing an aluminum alloy conductor wire having a composition comprising Mg:

• 0.1 mass % to 1.0 mass %, Si:
• 0.1 mass % to 1.20 mass %, Fe:
• 0.01 mass % to 1.40 mass %, Zr:
• 0.01 mass % to 0.50 mass %, Ti:
• 0 mass % to 0.100 mass %, B:
• 0 mass % to 0.030 mass %, Cu:
• 0 mass % to 1.00 mass %, Ag:
• 0 mass % to 0.50 mass %, Au:
• 0 mass % to 0.50 mass %, Mn:
• 0 mass % to 1.00 mass %, Cr:
• 0 mass % to 1.00 mass %, Hf:
• 0 mass % to 0.50 mass %, V:
• 0 mass % to 0.50 mass %, Sc:
• 0 mass % to 0.50 mass %, Co:
• 0 mass % to 0.50 mass %, Ni:
• 0 mass % to 0.50 mass %, and the balance:
• Al and inevitable impurities, where Ti, B, Cu, Ag, Au, Mn, Cr, Hf, V, Sc, Co and Ni are arbitrary additive components of which at least one component may be contained or none of the components may be contained, a density of a compound having a particle size of 0.5 to 5.0 μm and containing Fe being 1 to 300 particles/10000 μm2,
• a Mg/Si ratio, which is a ratio of Mg in mass % to Si in mass %, being greater than 1,
• the method comprising:
• forming a rough drawing wire through hot working subsequent to melting and casting, and thereafter carrying out processes including at least a wire drawing process, a solution heat treatment process and an aging heat treatment process,
• wherein a cooling rate during the casting has a value greater than 5° C./s, and a temperature increasing rate during the solution heat treatment is less than or equal to 20° C./s between room temperature and 550° C.