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

Patent metadata

Field	Value
Publication number	US-9870841-B2
Application number	US-201715464828-A
Country	US
Kind code	B2
Filing date	Mar 21, 2017
Priority date	Sep 22, 2014
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

An aluminum alloy wire rod has a composition including 0.1-1.0 mass % Mg; 0.1-1.0 mass % Si; 0.01-1.40 mass % Fe; 0.000-0.100 mass % Ti; 0.000-0.030 mass % B; 0.00-1.00 mass % Cu; 0.00-0.50 mass % Ag; 0.00-0.50 mass % Au; 0.00-1.00 mass % Mn; 0.00-1.00 mass % Cr; 0.00-0.50 mass % Zr; 0.00-0.50 mass % Hf; 0.00-0.50 mass % V; 0.00-0.50 mass % Sc; 0.00-0.50 mass % Sn; 0.00-0.50 mass % Co; 0.00-0.50 mass % Ni; and the balance being Al and inevitable impurities, and 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° is greater than or equal to 20% and less than or equal to 65%.

First claim

The invention claimed is:

1. 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%.

2. The aluminum alloy wire rod according to claim 1 , wherein the composition contains at least one element selected from a group consisting of Ti: 0.001 mass % to 0.100 mass % and B: 0.001 mass % to 0.030 mass %.

3. The aluminum alloy wire rod according to claim 1 , wherein the composition contains at least one element selected from a group consisting of 0.01 mass % to 1.00 mass % Cu; 0.01 mass % to 0.50 mass % Ag; 0.01 mass % to 0.50 mass % Au; 0.01 mass % to 1.00 mass % Mn; 0.01 mass % to 1.00 mass % Cr; 0.01 mass % to 0.50 mass % Zr; 0.01 mass % to 0.50 mass % Hf; 0.01 mass % to 0.50 mass % V; 0.01 mass % to 0.50 mass % Sc; 0.01 mass % to 0.50 mass % Sn; 0.01 mass % to 0.50 mass % Co; and 0.01 mass % to 0.50 mass % Ni.

4. The aluminum alloy wire rod according to claim 1 , wherein a tensile strength is greater than or equal to 200 MPa, and
a ratio (YS/TS) of 0.2% yield strength (YS) to the tensile strength (TS) is within a range of 0.4 to 0.7.

5. The aluminum alloy wire rod according to claim 1 , wherein the aluminum alloy wire rod has a diameter of 0.10 mm to 0.50 mm.

6. 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%.

7. 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%.

8. 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.

9. 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.

Assignees

• Furukawa Electric Co Ltd
• Furukawa Automotive Systems Inc

Inventors

• Yoshida Sho
• Sekiya Shigeki
• Mitose Kengo

Classifications

• C22F1/047

  of alloys with magnesium as the next major constituent · CPC title

• H01B13/0016

  for heat treatment · CPC title

• B21C1/02

  Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums · CPC title

• H01B1/023 Primary

  Alloys based on aluminium · CPC title

• C22C21/08

  with silicon · CPC title