ALUMINUM ALLOY EXTRUSION MATERIAL AND MANUFACTURING METHOD THEREFOR

• Main Authors: ISHIDA KOICHI, TAMADA YUKO, HATTA HIDECHIKA
• Format: Patent
• Language: English; Japanese
• Published: 02.03.2017
• Subjects: ALLOYS; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

PROBLEM TO BE SOLVED: To provide an aluminum alloy extrusion material excellent in strength and creep resistance at high temperature and a manufacturing method therefor.SOLUTION: An aluminum alloy extrusion material contains, by mass%, Cu:2.5 to 3.3%, Mg:1.3 to 2.5%, Ni:0.50 to 1.3%, Fe:0.50 to 1.5%, Mn:less than 0.50%, Si:0.15 to 0.40%, Zr:0.06 to 0.20%, Ti:less than 0.05% and the balance Al with inevitable impurities. The aluminum alloy extrusion material has particle diameter of an intermetallic compound of 20 μm or less by equivalent circle diameter, density of intermetallic compound with particle diameter of 0.3 to 20 μm by equivalent circle diameter of 5×10/mmor more and average particle diameter of subgrain particle of 20 μm by equivalent circle diameter at a cross section.SELECTED DRAWING: None 【課題】高温での強度及び耐クリープ性に優れたアルミニウム合金押出材及びその製造方法を提供する。【解決手段】アルミニウム合金押出材は、質量％で、Ｃｕ：２．５〜３．３％、Ｍｇ：１.３〜２．５％、Ｎｉ：０．５０〜１．３％、Ｆｅ：０．５０〜１．５％、Ｍｎ：０．５０％未満、Ｓｉ：０．１５〜０．４０％、Ｚｒ：０．０６〜０．２０％、Ｔｉ：０．０５％未満を含有し、残部がＡｌ及び不可避的不純物からなる。アルミニウム合金押出材は、断面において、金属間化合物の粒径が円相当径で２０μｍ以下であり、粒径が円相当径で０．３〜２０μｍの金属間化合物の密度が５×１０３個／ｍｍ２以上であり、かつ、亜結晶粒の平均粒径が円相当径で２０μｍ以下である。【選択図】なし