ALUMINUM ALLOY PLATE AND METHOD OF PRODUCING THE SAME

• Main Authors: ISHIKAWA NOBUHITO, TANAKA HIROKI, NAKANISHI HIDETAKA
• Format: Patent
• Language: English; Japanese
• Published: 11.04.2019
• Subjects: ALLOYS; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; TREATMENT OF ALLOYS OR NON-FERROUS METALS

To provide an aluminum alloy plate which combines high strength characteristics with excellent elongation, and is lower in production cost than conventional ones, and a method of producing the same.SOLUTION: An aluminum alloy plate 1 has a chemical component that contains Mg of 0.20-1.5 mass%, Si of 0.20-1.5 mass%, Cu of 0.010-1.0 mass%, Mn of 0.010-0.50 mass%, Cr of 0.010-0.50 mass%, Ti of 0.0050-0.50 mass%, and Fe regulated to 0.50 mass% or less, and Zn regulated to 0.50 mass% or less, and the balance Al with inevitable impurities. The aluminum alloy plate has a rolled texture in which a crystal grain length in a direction parallel to a rolling direction is 5.0 times or more a crystal grain length in a direction parallel to a plate thickness direction. Tensile strength is 280 MPa or more. Proof stress is 240 MPa or more. Elongation is 7% or more. Electric conductivity is 43-60%IACS.SELECTED DRAWING: Figure 1 【課題】高い強度特性と優れた伸びとを両立し、従来よりも製造コストの低いアルミニウム合金板及びその製造方法を提供する。【解決手段】アルミニウム合金板１は、Ｍｇ：０．２０〜１．５質量％、Ｓｉ：０．２０〜１．５質量％、Ｃｕ：０．０１０〜１．０質量％、Ｍｎ：０．０１０〜０．５０質量％、Ｃｒ：０．０１０〜０．５０質量％、Ｔｉ：０．００５０〜０．５０質量％を含有し、Ｆｅ：０．５０質量％以下、Ｚｎ：０．５０質量％以下に規制され、残部がＡｌ及び不可避的不純物からなる化学成分を有している。圧延方向に平行な方向の結晶粒長さが板厚方向に平行な方向の結晶粒長さの５．０倍以上である圧延集合組織を有している。引張強さが２８０ＭＰａ以上である。耐力が２４０ＭＰａ以上である。伸びが７％以上である。導電率が４３〜６０％ＩＡＣＳである。【選択図】図１