14-11-2019 дата публикации
Номер: US20190345594A1
An aluminum alloy wire rod has a chemical composition consisting of 0.1 to 1.0 mass % of Co, 0.2 to 0.5 mass % of Zr, 0.02 to 0.09 mass % of Fe, 0.02 to 0.09 mass % of Si, 0 to 0.2 mass % of Mg, 0 to 0.10 mass % of Ti, 0 to 0.03 mass % of B, 0 to 1.00 mass % of Cu, 0 to 0.50 mass % of Ag, 0 to 0.50 mass % of Au, 0 to 1.00 mass % of Mn, 0 to 1.00 mass % of Cr, 0 to 0.50 mass % of Hf, 0 to 0.50 mass % of V, 0 to 0.50 mass % of Sc, 0 to 0.50 mass % of Ni, the balance being Al and inevitable impurities, and a metal structure including Al crystal grains, an Al—Co—Fe compound and an Al-Zr compound. The Al crystal grains having a crystal grain diameter of 10 μm or less have an area ratio of 90% or more. The wire rod has a tensile strength of 150 MPa or more, an electrical conductivity of 55% IACS or more and when heated at 200 deg C. for 10 years, a strength of 90% or more of its initial state strength. 1. A wire rod made of an aluminum alloy , the aluminum alloy having a chemical composition consisting of 0.1 to 1.0 mass % of Co , 0.2 to 0.5 mass % of Zr , 0.02 to 0.09 mass % of Fe , 0.02 to 0.09 mass % of Si , 0 to 0.2 mass % of Mg , 0 to 0.10 mass % of Ti , 0 to 0.03 mass % of B , 0 to 1.00 mass % of Cu , 0 to 0.50 mass % of Ag , 0 to 0.50 mass % of Au , 0 to 1.00 mass % of Mn , 0 to 1.00 mass % of Cr , 0 to 0.50 mass % of Hf , 0 to 0.50 mass % of V , 0 to 0.50 mass % of Sc , 0 to 0.50 mass % of Ni , the balance being Al and inevitable impurities ,wherein the aluminum alloy has a metal structure including Al crystal grains, an Al—Co—Fe compound and an Al—Zr compound, andwherein an area ratio of a region occupied by the Al crystal grains having a crystal grain diameter of 10 μm or less is 90% or more.2. The aluminum alloy wire rod according to claim 1 , wherein in a cross section perpendicular to a longitudinal direction claim 1 , the number of the Al—Zr compounds per unit area is 500/100 μmor more.3. The aluminum alloy wire rod according to claim 1 , wherein in a cross ...
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