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

• US 10,553,327 B2
• Filed: 12/19/2017
• Issued: 02/04/2020
• Est. Priority Date: 05/26/2014
• Status: Active Grant

• Current Assignee: Furukawa Electric Company Limited
• Original Assignee: Furukawa Electric Company Limited
• Inventors: Yoshida, Sho, Matsuo, Ryosuke, Sekiya, Shigeki, Mitose, Kengo
• Primary Examiner(s): Thompson, Timothy J
• Assistant Examiner(s): Miller, Rhadames Alonzo
• Application Number:
  US15/847,199
• Publication Number:
  US 20180122528A1
• Time in Patent Office: 777 Days
• CPC Class Codes: C22C 21/02 with silicon as the next major constituent
• CPC Class Codes: C22F 1/043 of alloys with silicon as the next major constituent
• CPC Class Codes: H01B 1/023 Alloys based on aluminium
• CPC Class Codes: H01B 13/0016 for heat treatment
• CPC Class Codes: H01B 13/01209 Details
• CPC Class Codes: H01B 7/0009 Details relating to the conductive cores
• CPC Class Codes: H01B 7/0045 Cable-harnesses

Abstract

An aluminum alloy conductor wire has a composition comprising Mg: 0.1-1.0 mass %, Si: 0.1-1.20 mass %, Fe: 0.01-1.40 mass %, Zr: 0.01-0.50 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 %, 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, 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 0.5-5.0 μm and containing Fe is 1 to 300 particles/10000 μm². Mg/Si ratio, which is a ratio of Mg in mass % to Si in mass %, is greater than 1.

Claims

1. An aluminum alloy conductor wire having a composition comprising Mg:

0.3 mass % to 0.7 mass %, Si;

0.1 mass % to 1.20 mass %, Fe;

0.15 mass % to 0.45 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 precipitated compound having a particle size of 0.5 to 5.0 μ

m and containing Fe being 1 to 300 particles/10000 μ

m², the precipitated compound being one of Al—

Fe, Al—

Fe—

Si, and Al—

Fe—

Si—

Mg,

a Mg/Si ratio, which is a ratio of Mg in mass % to Si in mass %, being greater than 1,

the aluminum alloy conductor wire being manufactured by a 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, the solution heat treatment process being performed under one of a first condition in which a cooling rate during the casting is 0.1°

C./s to 5°

C./s and a second condition in which 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.,

wherein under the first condition, a range of temperature increasing rate in the solution heat treatment is 5 to 80°

C./s, and under the second condition, a predetermined temperature during heating in the solution heat treatment is in a range of 520°

C. to 580°

C.,

wherein a total of contents of Fe, Zr, Ti, B, Cu, Ag, Au, Mn, Cr, Hf, V, Sc, Co, and Ni is 0.8 mass % to 2.00 mass %.

2. The aluminum alloy conductor wire according to claim 1, wherein the composition contains at least one selected from a group comprising Ti:

0.001 mass % to 0.100 mass % and B;

0.001 mass % to 0.030 mass %.

3. The aluminum alloy conductor wire according to claim 1, wherein the composition contains at least one selected from a group comprising 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 %, 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 conductor wire according to claim 1, wherein the composition contains Ni:

0.01 mass % to 0.50 mass %.

5. The aluminum alloy conductor wire according to claim 1, wherein the aluminum alloy conductor wire is an aluminum alloy wire having a diameter of 0.1 mm to 1.5 mm.

6. An aluminum alloy stranded wire comprising a plurality of aluminum alloy conductor wires as claimed in claim 5 which are stranded together.

7. A coated wire comprising a coating layer at an outer periphery of the aluminum alloy conductor wire as claimed in claim 5.

8. A coated wire comprising a coating layer at an outer periphery of the aluminum alloy stranded wire as claimed in claim 6.

9. 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;

0.3 mass % to 0.7 mass %, Si;

0.1 mass % to 1.20 mass %, Fe;

0.15 mass % to 0.45 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 precipitated compound having a particle size of 0.5 to 5.0 μ

m and containing Fe is 1 to 300 particles/10000 μ

m², the precipitated compound being one of Al—

Fe, Al—

Fe—

Si, and Al—

Fe—

Si—

Mg,

a Mg/Si ratio, which is a ratio of Mg in mass % to Si in mass %, being greater than 1,

the aluminum alloy conductor wire being manufactured by a 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, the solution heat treatment being performed under one of a first condition in which a cooling rate during the casting is 0.1°

C./s to 5°

C./s and a second condition in which 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.,

wherein under the first condition, a range of temperature increasing rate in the solution heat treatment is 5 to 80°

C./s, and under the second condition, a predetermined temperature during heating in the solution heat treatment is in a range of 520°

C. to 580°

C.,

wherein a total of contents of Fe, Zr, Ti, B, Cu, Ag, Au, Mn, Cr, Hf, V, Sc, Co, and Ni is 0.8 mass % to 2.00 mass %.

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

0.3 mass % to 0.7 mass %, Si;

0.1 mass % to 1.20 mass %, Fe;

0.15 mass % to 0.45 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 precipitated compound having a particle size of 0.5 to 5.0 μ

m and containing Fe being 1 to 300 particles/10000 μ

m², the precipitated compound being one of Al—

Fe, Al—

Fe—

Si, and Al—

Fe—

Si—

Mg,

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, the solution heat treatment being performed under one of a first condition in which a cooling rate during the casting is 0.1°

C./s to 5°

C./s and a second condition in which 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.,

wherein under the first condition, a range of temperature increasing rate in the solution heat treatment is 5 to 80°

C./s, and under the second condition, a predetermined temperature during heating in the solution heat treatment is in a range of 520°

C. to 580°

C.

wherein a total of contents of Fe, Zr, Ti, B, Cu, Ag, Au, Mn, Cr, Hf, V, Sc, Co, and Ni is 0.8 mass % to 2.00 mass %.