发明名称 |
Method for manufacturing an extruded material of heat treatment type Al—Zn—Mg series aluminum alloy |
摘要 |
A casted ingot of a heat treatment type Al—Zn—Mg series aluminum alloy comprising Zn: 4.0-8.0% by mass, Mg: 0.5-2.0% by mass, Cu: 0.05-0.5% by mass, Ti: 0.01-0.1% by mass, and any one or more of Mn: 0.1-0.7% by mass, Cr: 0.1-0.5% by mass and Zr: 0.05-0.3% by mass, and the balance being aluminum and incidental impurities is extruded at a homogenization treatment temperature after a homogenization treatment without cooled, and a resulted extruded material is die quenched at a cooling rate equal to or more than 100° C./min and then subjected to an artificial aging treatment, wherein the homogenization treatment is carried out by heating to the homogenization treatment temperature as 430-500° C. at a heating rate less than 750° C./hr or by heating to the homogenization treatment temperature and held the homogenization treatment temperature for 3 hours. |
申请公布号 |
US8876993(B2) |
申请公布日期 |
2014.11.04 |
申请号 |
US201213419798 |
申请日期 |
2012.03.14 |
申请人 |
Kobe Steel, Ltd. |
发明人 |
Miyata Yukimasa;Yoshihara Shinji;Kang Minwoo |
分类号 |
C22F1/053 |
主分类号 |
C22F1/053 |
代理机构 |
Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A method for manufacturing an extruded material of a heat treatment type Al—Zn—Mg series aluminum alloy, comprising:
(a) heating a casted ingot of a heat treatment type Al—Zn—Mg series aluminum alloy comprising Zn: 4.0-8.0% by mass, Mg: 0.5-2.0% by mass, Cu: 0.05-0.5% by mass, Ti: 0.01-0.1% by mass, and any one or more of Mn: 0.1-0.7% by mass, Cr: 0.1-0.5% by mass and Zr: 0.05-0.3% by mass, and the balance being aluminum and incidental impurities, to a homogenization treatment temperature at a heating rate of equal to or more than 70° C./hr and equal to or less than 750° C./hr; (b) extruding the heated casting ingot from (a) at the homogenization treatment temperature; (c) die quenching the extruded material from (b) at a cooling rate equal to or more than 100° C./min; and (d) subjecting the die quenched material from (c) to an artificial aging treatment. |
地址 |
Kobe-shi JP |