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

Patent metadata

Field	Value
Publication number	US-2016358685-A1
Application number	US-201615244177-A
Country	US
Kind code	A1
Filing date	Aug 23, 2016
Priority date	Mar 6, 2014
Publication date	Dec 8, 2016
Grant date	—

Abstract

An aluminum alloy wire rod has a composition including Mg: 0.10-1.0 mass %, Si: 0.10-1.20 mass %, Fe: 0.01-1.40 mass %, Ti: 0.000- 0.100 mass %, B: 0.000-0.030 mass %, Cu: 0.00-1.00 mass %, Ag: 0.00-0.50 mass %, Au: 0.00-0.50 mass %, Mn: 0.00-1.00 mass %, Cr: 0.00-1.00 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 %, Co: 0.00-0.50 mass %, Ni: 0.00-0.50 mass %, and the balance: Al and incidental impurities, Mg/Si mass ratio being 0.4 to 0.8. The aluminum alloy wire rod has a tensile strength of greater than or equal to 200 MPa, an elongation of greater than or equal to 13%, a conductivity of 47% IACS, and a ratio (YS/TS) of 0.2% yield strength (YS) to the tensile strength (TS) of less than or equal to 0.7.

First claim

1 . An aluminum alloy wire rod having a composition comprising Mg: 0.10 mass % to 1.0 mass %, Si: 0.10 mass % to 1.20 mass %, Fe: 0.01 mass % to 1.40 mass %, Ti: 0.000 mass % to 0.100 mass %, B: 0.000 mass % to 0.030 mass %, Cu: 0.00 mass % to 1.00 mass %, Ag: 0.00 mass % to 0.50 mass %, Au: 0.00 mass % to 0.50 mass %, Mn: 0.00 mass % to 1.00 mass %, Cr: 0.00 mass % to 1.00 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 %, Co: 0.00 mass % to 0.50 mass %, Ni: 0.00 mass % to 0.50 mass %, and the balance: Al and incidental impurities, Mg/Si mass ratio being 0.4 to 0.8,
the aluminum alloy wire rod having a tensile strength of greater than or equal to 200 MPa, an elongation of greater than or equal to 13%, a conductivity of 47% IACS, and a ratio (YS/TS) of 0.2% yield strength (YS) to the tensile strength (TS) of less than or equal to 0.7.

2 . The aluminum alloy wire rod 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 wire rod 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 %, 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 the composition contains Ni: 0.01 mass % to 0.50 mass %.

5 . The aluminum alloy wire rod according to claim 1 , wherein a total of contents of Fe, Ti, B, Cu, Ag, Au, Mn, Cr, Zr, Hf, V, Sc, Co, and Ni is 0.01 mass % to 2.00 mass %.

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

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

8 . A coated wire comprising a coating layer at an outer periphery of one of the aluminum alloy 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 wire rod and an aluminum alloy stranded wire; 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 wire rod has a composition comprising Mg: 0.10 mass % to 1.0 mass %, Si: 0.10 mass % to 1.20 mass %, Fe: 0.01 mass % to 1.40 mass %, Ti: 0. 000 mass % to 0.100 mass %, B: 0.000 mass % to 0.030 mass %, Cu: 0.00 mass % to 1.00 mass %, Ag: 0.00 mass % to 0.50 mass %, Au: 0.00 mass % to 0.50 mass %, Mn: 0.00 mass % to 1.00 mass %, Cr: 0.00 mass % to 1.00 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 %, Co:

0 . 00 mass % to 0.50 mass %, Ni: 0.00 mass % to 0.50 mass %, and the balance: Al and incidental impurities, Mg/Si mass ratio being 0.4 to 0.8, the aluminum alloy wire rod having a tensile strength of greater than or equal to 200 MPa, an elongation of greater than or equal to 13%, a conductivity of 47% IACS, and a ratio (YS/TS) of 0.2% yield strength (YS) to the tensile strength (TS) of less than or equal to 0.7.

10 . A method of manufacturing an aluminum alloy wire rod having a composition comprising Mg: 0.10 mass % to 1.0 mass %, Si: 0.10 mass % to 1.20 mass %, Fe: 0.01 mass % to 1.40 mass %, Ti: 0.000 mass % to 0.100 mass %, B: 0.000 mass % to 0.030 mass %, Cu: 0.00 mass % to 1.00 mass %, Ag: 0.00 mass % to 0.50 mass %, Au: 0.00 mass % to 0.50 mass %, Mn: 0.00 mass % to 1.00 mass %, Cr: 0.00 mass % to 1.00 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 %, Co: 0.00 mass % to 0.50 mass %, Ni: 0.00 mass % to 0.50 mass %, and the balance: Al and incidental impurities, Mg/Si mass ratio being 0.4 to 0.8, the aluminum alloy wire rod having a tensile strength of greater than or equal to 200 MPa, an elongation of greater than or equal to 13%, a conductivity of 47% IACS, and a ratio (YS/TS) of 0.2% yield strength (YS) to the tensile strength (TS) of less than or equal to 0.7,
the method comprising: forming a drawing stock 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 including heating to a predetermined temperature in a range of 450° C. to 540° C. at a temperature increasing rate of greater than or equal to 100° C./s, retaining for a retention time of 30 seconds or less, and thereafter cooling at an average cooling rate of greater than or equal to 10° C./s at least to a temperature of 150° C., and the aging heat treatment process including heating to a predetermined temperature in a range of 20° C. to 150° C. at a temperature increasing temperature in a range of 20° C./s to 100° C./s.

11 . An aluminum alloy wire rod having a composition comprising Mg: 0.10 mass % to 1.00 mass %, Si: 0.10 mass % to 1.20 mass %, Fe: 0.01 mass % to 0.70 mass %, Ti: 0.000 mass % to 0.100 mass %, B: 0.000 mass % to 0.030 mass %, Cu: 0.00 mass % to 1.00 mass %, Ag: 0.00 mass % to 0.50 mass %, Au: 0.00 mass % to 0.50 mass %, Mn: 0.00 mass % to 1.00 mass %, Cr: 0.00 mass % to 1.00 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 %, Co: 0.00 mass % to 0.50 mass %, Ni: 0.00 mass % to 0.50 mass %, and the balance: Al and incidental impurities, Mg/Si mass ratio being 0.4 to 0.8, a solute atom cluster being present in the aluminum alloy wire rod.

12 . The aluminum alloy wire rod according to claim 11 , wherein a β″-phase is present in the aluminum alloy wire rod.

13 . The aluminum alloy wire rod according to claim 11 , 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 %.

14 . The aluminum alloy wire rod according to claim 11 , 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 %, 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 %, and an average crystal grain size is less than or equal to 1/3 of a wire size.

15 . The aluminum alloy wire rod according to claim 11 , wherein the composition contains Ni: 0.01 mass % to 0.50 mass %.

16 . The aluminum alloy wire rod according to claim 11 , wherein the aluminum alloy wire rod has a tensile strength of greater than or equal to 200 MPa, an elongation of greater than or equal to 13%, a conductivity of greater than or equal to 45% IACS, and a ratio (YS/TS) of 0.2% yield strength (YS) to the tensile strength (TS) of less than or equal to 0.7.

17 . The aluminum alloy wire rod according to claim 11 , wherein the aluminum alloy wire rod is an aluminum alloy wire having a diameter o

Assignees

• Furukawa Electric Co Ltd
• Furukawa Automotive Systems Inc

Inventors

• Yoshida Sho
• Sekiya Shigeki
• Mitose Kengo

Classifications

• C22F1/04

  of aluminium or alloys based thereon · CPC title

• H01R11/11

  End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member (H01R11/01 takes precedence) · CPC title

• H01B1/023 Primary

  Alloys based on aluminium · CPC title

• C22C21/02

  with silicon as the next major constituent · CPC title

• C22C21/00 Primary

  Alloys based on aluminium · CPC title