ALUMINUM ALLOY EXTRUDED ARTICLE EXCELLENT IN SHOCK ABSORBING PROPERTY,申请号WO2003JP13588-传众专利搜索

ALUMINUM ALLOY EXTRUDED ARTICLE EXCELLENT IN SHOCK ABSORBING PROPERTY

申请公布号：WO2005040440(A1)

申请号：WO2003JP13588

申请日期：2003.10.23

申请公布日期：2005.05.06

申请人：

AISIN KEIKINZOKU CO., LTD.;MAKINO, SHINJI

发明人：MAKINO, SHINJI

分类号：B60J5/00;B60R19/04;C22C21/10;F16F7/12;(IPC1-7):C22C21/10

主分类号：B60J5/00

摘要：<p>A shock absorbing member, characterized in that it is prepared by a method which comprises providing an aluminum alloy having a chemical composition, in wt %: Zn: 5.6 to 6.6 %, Mg: 0.75 to 1.10 %, Cu: 0.10 to 0.25 wt %, Mn: 0.05 to 0.20 %, Cr: 0.03 to 0.15 %, Zr: 0.10 to 0.25 wt %, Si: 0.02 to 0.10 wt %, Fe: 0.05 to 0.17 wt %, the balance: Al and inevitable impurities, casting the alloy, to prepare a billet, extruding the billet into an extruded article having a hollow cross-sectional shape, and then subjecting the article to an artificial aging treatment so as for the article to have an 0.2 % offset yield strength in the range of 320 to 390 MPa. The shock absorbing member comprises an aluminum alloy extruded article and is excellent in absorbing characteristics for collision energy generating, for example, in the collision between automobiles.</p>