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

Patent metadata

Field	Value
Publication number	US-9997276-B2
Application number	US-201715597546-A
Country	US
Kind code	B2
Filing date	May 17, 2017
Priority date	Dec 5, 2014
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

An aluminum alloy wire rod having a composition comprising Mg: 0.1-1.0 mass %, Si: 0.1-1.2 mass %, Fe: 0.10-1.40 mass %, Ti: 0-0.100 mass %, B: 0-0.030 mass %, Cu: 0-1.00 mass %, Ag: 0-0.50 mass %, Au: 0-0.50 mass %, Mn: 0-1.00 mass %, Cr: 0-1.00 mass %, Zr: 0-0.50 mass %, Hf: 0-0.50 mass %, V: 0-0.50 mass %, Sc: 0-0.50 mass %, Co: 0-0.50 mass %, Ni: 0-0.50 mass %, and the balance: Al and inevitable impurities, wherein a number of compound particles present on a surface and having a diameter of greater than or equal to 1 μm in terms of equivalent circle diameter is less than or equal to one per 100 μm 2 , and a tensile strength is greater than or equal to 200 MPa.

First claim

What is claimed is:

1. An aluminum alloy wire rod having a composition comprising Mg: 0.1 mass % to 1.0 mass %, Si: 0.1 mass % to 1.2 mass %, Fe: 0.10 mass % to 1.40 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 %, Zr: 0 mass % to 0.50 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,
wherein a number of compound particles present on a surface and having a diameter of greater than or equal to 1 μm in terms of equivalent circle diameter is less than or equal to one per 100 μm 2 , and a tensile strength is greater than or equal to 200 MPa.

2. The aluminum alloy wire rod according to claim 1 , wherein the composition comprises both of or any one 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 comprises at least one of Cu: 0.01 mass % to 1.00 mass %, Ag: 0.01 mass % to 0.50 mass %, Au: 0.01 mass % to 0.50 mass %, Mn: 0.01 mass % to 1.00 mass %, Cr: 0.01 mass % to 1.00 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 %, Co: 0.01 mass % to 0.50 mass % and Ni: 0.01 mass % to 0.50 mass %.

4. The aluminum alloy wire rod according to claim 1 , wherein a sum of contents of Fe, Ti, B, Cu, Ag, Au, Mn, Cr, Zr, Hf, V, Sc, Co and Ni is 0.10 mass % to 2.00 mass %.

5. The aluminum alloy wire rod according to claim 1 , wherein the compound particles are Fe-based compound particles.

6. The aluminum alloy wire rod according to claim 1 , wherein a thickness of a surface oxide layer is less than or equal to 500 nm.

7. The aluminum alloy wire rod according to claim 1 , wherein the aluminum alloy wire rod has a plated film on a surface thereof, and a presence ratio of pinholes each having a diameter of greater than or equal to 1 μm in terms of equivalent circle diameter is less than or equal to one pinhole/mm 2 .

8. The aluminum alloy wire rod according to claim 1 , wherein the aluminum alloy wire rod is an aluminum alloy wire having a strand diameter of 0.1 mm to 0.5 mm.

9. An aluminum alloy stranded wire obtained by stranding a plurality of the aluminum alloy wires as claimed in claim 8 .

10. A covered wire comprising a covering layer at an outer periphery of one of the aluminum alloy wire as claimed in claim 8 .

11. The aluminum alloy wire rod according to claim 2 , wherein the composition comprises at least one of Cu: 0.01 mass % to 1.00 mass %, Ag: 0.01 mass % to 0.50 mass %, Au: 0.01 mass % to 0.50 mass %, Mn: 0.01 mass % to 1.00 mass %, Cr: 0.01 mass % to 1.00 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 %, Co: 0.01 mass % to 0.50 mass % and Ni: 0.01 mass % to 0.50 mass %.

12. The aluminum alloy wire rod according to claim 2 , wherein a sum of contents of Fe, Ti, B, Cu, Ag, Au, Mn, Cr, Zr, Hf, V, Sc, Co and Ni is 0.10 mass % to 2.00 mass %.

13. The aluminum alloy wire rod according to claim 3 , wherein a sum of contents of Fe, Ti, B, Cu, Ag, Au, Mn, Cr, Zr, Hf, V, Sc, Co and Ni is 0.10 mass % to 2.00 mass %.

14. The aluminum alloy wire rod according to claim 2 , wherein the compound particles are Fe-based compound particles.

15. The aluminum alloy wire rod according to claim 3 , wherein the compound particles are Fe-based compound particles.

16. The aluminum alloy wire rod according to claim 4 , wherein the compound particles are Fe-based compound particles.

17. The aluminum alloy wire rod according to claim 2 , wherein a thickness of a surface oxide layer is less than or equal to 500 nm.

18. A wire harness comprising:
a covered wire including a covering layer at an outer periphery of one of an aluminum alloy wire rod and an aluminum alloy stranded wire; and
a terminal fitted at an end portion of the covered wire, the covering layer being removed from the end portion,
wherein the aluminum alloy wire rod had a composition comprising Mg: 0.1 mass % to 1.0 mass %, Si: 0.1 mass % to 1.2 mass %, Fe: 0.10 mass % to 1.40 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 %, Zr: 0 mass % to 0.50 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,
wherein a number of compound particles present on a surface and having a diameter of greater than or equal to 1 μm in terms of equivalent circle diameter is less than or equal to one per 100 μm 2 , and a tensile strength is greater than or equal to 200 MPa.

Assignees

• Furukawa Electric Co Ltd
• Furukawa Automotive Systems Inc

Inventors

• Yoshida Sho
• Sekiya Shigeki
• Mitose Kengo

Classifications

• 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

• B22D11/005

  of wire (casting on wire B22D19/14) · CPC title

• H01B5/02

  Single bars, rods, wires, or strips · CPC title

• H01B13/0036

  Details · CPC title

• H01B1/023

  Alloys based on aluminium · CPC title