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-10096394-B2
Application number	US-201715597753-A
Country	US
Kind code	B2
Filing date	May 17, 2017
Priority date	Dec 5, 2014
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

An aluminum alloy wire rod having a composition including Mg: 0.10-1.00 mass %, Si: 0.10-1.00 mass %, Fe: 0.01-1.40 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 %, Sn: 0-0.50 mass %, Co: 0-0.50 mass %, Ni: 0-0.50 mass %, and the balance: Al and inevitable impurities, wherein a ratio of (standard deviation of crystal grain size of the aluminum alloy wire rod)/(average crystal grain size of the aluminum alloy wire rod) is less than or equal to 0.57, and a ratio of (diameter of the aluminum alloy wire rod)/(average crystal grain size of the aluminum alloy wire rod) is greater than or equal to 10.

First claim

What is claimed is:

1. An aluminum alloy wire rod having a composition comprising Mg: 0.10 mass % to 1.00 mass %, Si: 0.10 mass % to 1.00 mass %, Fe: 0.01 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 %, Sn: 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 ratio of (standard deviation of crystal grain size of the aluminum alloy wire rod)/(average crystal grain size of the aluminum alloy wire rod) is less than or equal to 0.57, and a ratio of (diameter of the aluminum alloy wire rod)/(average crystal grain size of the aluminum alloy wire rod) is greater than or equal to 10.

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 %, Sn: 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 the aluminum alloy wire rod is an aluminum alloy wire rod having a diameter of 0.10 mm to 0.50 mm.

5. An aluminum alloy stranded wire comprising a plurality of the aluminum alloy wire rods as claimed in claim 1 , the aluminum alloy wire rods being stranded together.

6. The aluminum alloy stranded wire according to claim 5 , wherein no wire break is caused by a load of 2.94 N (300 gf) with a technique of evaluating an impact resistance of the aluminum alloy stranded wire.

7. A covered wire comprising a covering layer at an outer periphery of the aluminum alloy stranded wire as claimed in claim 5 .

8. A covered wire comprising a covering layer at an outer periphery of one of the aluminum alloy wire rod as claimed in claim 1 .

9. 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: 0.10 mass % to 1.00 mass %, Si: 0.10 mass % to 1.00 mass %, Fe: 0.01 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 %, Sn: 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 ratio of (standard deviation of crystal grain size of the aluminum alloy wire rod)/(average crystal grain size of the aluminum alloy wire rod) is less than or equal to 0.57, and a ratio of (diameter of the aluminum alloy wire rod)/(average crystal grain size of the aluminum alloy wire rod) is greater than or equal to 10.

10. The wire harness according to claim 9 , wherein no wire break is caused by a load of 4.90 N (500 gf) with a technique of evaluating an impact resistance of an electric wire whereto a terminal is crimped.

Assignees

• Furukawa Electric Co Ltd
• Furukawa Automotive Systems Inc

Inventors

• Sekiya Shigeki
• Yoshida Sho
• Mitose Kengo

Classifications

• H01B5/02

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

• C22F1/047

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

• H01R4/18

  by crimping {(H01R4/01, H01R4/2495 take precedence; for coaxial cables H01R9/0518)} · CPC title

• C22C21/02

  with silicon as the next major constituent · CPC title

• C22C21/08

  with silicon · CPC title