자동차의 도어 빔의 소재로서, 지금까지보다 높은 강도 영역(내력이 460MPa 이상)에 있어서 우수한 내SCC성을 구비한 7000계 알루미늄 합금 압출재를 제공한다. 7000계 알루미늄 합금 압출재가, Zn: 7.5∼9.0질량%, Mg: 1.3∼2.0질량%, Cu: 0.1∼0.7질량%, Si: 0.15질량% 이하, Fe: 0.3질량% 이하, Ti: 0.005∼0.2질량%, 추가로 Mn, Cr, Zr 중 1종 이상을 Mn: 0.3질량% 이하, Cr: 0.25질량% 이하, Zr: 0.25질량% 이하의 범위 내에서 0.1∼0.5질량%, 잔부 Al 및 불순물로 이루어지고, Fe계 정출물을 포함하며, 그 평균 Cu 함유량이 5.0질량% 이하이다.

    Provided is, as a material for an automotive door beam, a 7000-series aluminum alloy extruded material having excellent SCC resistance in a higher strength range (proof stress of 460 MPa or greater) than ever before. The 7000-series aluminum alloy extruded material comprises: 7.5-9.0 mass% of Zn; 1.3-2.0 mass% of Mg; 0.1-0.7 mass% of Cu; at most 0.15 mass% of Si; at most 0.3 mass% of Fe; 0.005-0.2 mass% of Ti; 0.1-0.5 mass% of at least one among Mn, Cr, and Zr within a range where Mn is 0.3 mass% or less, Cr is 0.25 mass% or less, and Zr is 0.25 mass% or less; and the remainder consisting of Al and impurities, wherein a Fe-based crystallized substance is contained, and the average Cu content thereof is 5.0 mass% or less.


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    Title :

    알루미늄 합금 압출재로 이루어지는 자동차의 도어 빔


    Contributors:

    Publication date :

    2021-10-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    C22C Legierungen , ALLOYS / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS , Verändern der physikalischen Struktur von Nichteisenmetallen oder Nichteisenlegierungen




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