| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an Al-Mg-based alloy plate that hardly generates an SS (stretcher strain) mark and is superior in press moldability without causing a new problem such as a decrease in bendability due to age hardening at room temperature. <P>SOLUTION: The structure of the alloy plate is made such that Mg is hardly diffused and serration less likely occurs by increasing the sum of the whole surface area of an aggregate of specific atoms containing Cu atoms of the Al-Mg aluminum alloy plate formed of a composition containing specific amount of Mg and Cu, and blocking (trapping) atomic vacancies with the aggregate of the atoms to make a plate organization, thereby preventing an SS mark from being generated during a press molding process. <P>COPYRIGHT: (C)2013,JPO&INPIT |
