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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

  • US 20160358685A1
  • Filed: 08/23/2016
  • Published: 12/08/2016
  • Est. Priority Date: 03/06/2014
  • Status: Active Grant
First Claim
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-1. 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., andthe 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.

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