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

An aluminum alloy stranded wire comprising a plurality of aluminum alloy wire rods which are stranded together, each of plurality of aluminum alloy wire rods having a composition comprising 0.1 mass % to 1.0 mass % Mg;

• 0.1 mass % to 1.0 mass % Si;
• 0.01 mass % to 1.40 mass % Fe;
• 0.000 mass % to 0.100 mass % Ti;
• 0.000 mass % to 0.030 mass % B;
• 0.00 mass % to 1.00 mass % Cu;
• 0.00 mass % to 0.50 mass % Ag;
• 0.00 mass % to 0.50 mass % Au;
• 0.00 mass % to 1.00 mass % Mn;
• 0.00 mass % to 1.00 mass % Cr;
• 0.00 mass % to 0.50 mass % Zr;
• 0.00 mass % to 0.50 mass % Hf;
• 0.00 mass % to 0.50 mass % V;
• 0.00 mass % to 0.50 mass % Sc;
• 0.00 mass % to 0.50 mass % Sn;
• 0.00 mass % to 0.50 mass % Co;
• 0.00 mass % to 0.50 mass % Ni;
• and the balance being Al and inevitable impurities, an area fraction of a region in which an angle formed by a longitudinal direction of the aluminum alloy wire rod and a <111> direction of a crystal is within 20° being greater than or equal to 20% and less than or equal to 65%.

A coated wire comprising a coating layer at an outer periphery of one of an aluminum alloy wire rod and an aluminum alloy stranded wire comprising a plurality the aluminum alloy wire rods which are stranded together, the aluminum alloy wire rod having a composition comprising 0.1 mass % to 1.0 mass % Mg;

• 0.1 mass % to 1.0 mass % Si;
• 0.01 mass % to 1.40 mass % Fe;
• 0.000 mass % to 0.100 mass % Ti;
• 0.000 mass % to 0.030 mass % B;
• 0.00 mass % to 1.00 mass % Cu;
• 0.00 mass % to 0.50 mass % Ag;
• 0.00 mass % to 0.50 mass % Au;
• 0.00 mass % to 1.00 mass % Mn;
• 0.00 mass % to 1.00 mass % Cr;
• 0.00 mass % to 0.50 mass % Zr;
• 0.00 mass % to 0.50 mass % Hf;
• 0.00 mass % to 0.50 mass % V;
• 0.00 mass % to 0.50 mass % Sc;
• 0.00 mass % to 0.50 mass % Sn;
• 0.00 mass % to 0.50 mass % Co;
• 0.00 mass % to 0.50 mass % Ni;
• and the balance being Al and inevitable impurities, an area fraction of a region in which an angle formed by a longitudinal direction of the aluminum alloy wire rod and a <111> direction of a crystal is within 20° being greater than or equal to 20% and less than or equal to 65%.

A wire harness comprising a coated wire and a terminal fitted at an end portion of the coated wire, the coated wire comprising a coating layer at an outer periphery of one of an aluminum alloy wire rod and an aluminum alloy stranded wire comprising a plurality the aluminum alloy wire rods which are stranded together, the aluminum alloy wire rod having a composition comprising 0.1 mass % to 1.0 mass % Mg;

• 0.1 mass % to 1.0 mass % Si;
• 0.01 mass % to 1.40 mass % Fe;
• 0.000 mass % to 0.100 mass % Ti;
• 0.000 mass % to 0.030 mass % B;
• 0.00 mass % to 1.00 mass % Cu;
• 0.00 mass % to 0.50 mass % Ag;
• 0.00 mass % to 0.50 mass % Au;
• 0.00 mass % to 1.00 mass % Mn;
• 0.00 mass % to 1.00 mass % Cr;
• 0.00 mass % to 0.50 mass % Zr;
• 0.00 mass % to 0.50 mass % Hf;
• 0.00 mass % to 0.50 mass % V;
• 0.00 mass % to 0.50 mass % Sc;
• 0.00 mass % to 0.50 mass % Sn;
• 0.00 mass % to 0.50 mass % Co;
• 0.00 mass % to 0.50 mass % Ni;
• and the balance being Al and inevitable impurities, an area fraction of a region in which an angle formed by a longitudinal direction of the aluminum alloy wire rod and a <111> direction of a crystal is within 20° being greater than or equal to 20% and less than or equal to 65%, the coating layer being removed from the end portion.

A method of manufacturing an aluminum alloy wire rod having a composition comprising 0.1 mass % to 1.0 mass % Mg;

• 0.1 mass % to 1.0 mass % Si;
• 0.01 mass % to 1.40 mass % Fe;
• 0.000 mass % to 0.100 mass % Ti;
• 0.000 mass % to 0.030 mass % B;
• 0.00 mass % to 1.00 mass % Cu;
• 0.00 mass % to 0.50 mass % Ag;
• 0.00 mass % to 0.50 mass % Au;
• 0.00 mass % to 1.00 mass % Mn;
• 0.00 mass % to 1.00 mass % Cr;
• 0.00 mass % to 0.50 mass % Zr;
• 0.00 mass % to 0.50 mass % Hf;
• 0.00 mass % to 0.50 mass % V;
• 0.00 mass % to 0.50 mass % Sc;
• 0.00 mass % to 0.50 mass % Sn;
• 0.00 mass % to 0.50 mass % Co;
• 0.00 mass % to 0.50 mass % Ni;
• and the balance being Al and inevitable impurities,
• an area fraction of a region in which an angle formed by a longitudinal direction of the aluminum alloy wire rod and a <111> direction of a crystal is within 20° being greater than or equal to 20% and less than or equal to 65%,
• the method comprising:
• forming a drawing stock through hot working subsequent to melting and casting, and thereafter carrying out processes at least including a first heat treatment process, a wire drawing process, a solution heat treatment, and an aging heat treatment process in this order,
• wherein the first heat treatment process includes, after heating to a predetermined temperature within a range of 480° C. to 620° C., cooling at an average cooling rate of greater than or equal to 10° C./s at least to a temperature of 200° C.