The invention provides an Al-Mg-Si alloy material with ultrahigh toughness as well as a smelting process and application of the Al-Mg-Si alloy material. The Al-Mg-Si alloy material with the ultrahigh toughness is prepared from the following components in percentage by mass: 0.3 to 0.5 percent of silicon, 0.12 to 0.25 percent of iron, 0.07 to 0.12 percent of copper, 0.3 to 0.6 percent of magnesium, 0.02 to 0.1 percent of manganese, 0.02 to 0.05 percent of titanium and the balance of aluminum and inevitable impurities. The ultrahigh-toughness Al-Mg-Si alloy material is excellent in extrusion performance, small in extrusion resistance and long in service life of a mold, the bending angle is larger than or equal to 155 degrees in the extrusion direction, the bending angle is larger than or equal to 155 degrees in the vertical extrusion direction, the average grain size is smaller than or equal to 100 micrometers, T7 is free of cracks in crushing, and after T7 is subjected to 130 DEG C * 1000 h thermal stabilization, the tensile strength is larger than or equal to 205 MPa, the yield strength is larger than or equal to 180 MPa, and the ductility A50 is larger than or equal to 10%; when the aluminum alloy is used for preparing the automobile energy absorption box, the performance requirements of customers on the aluminum alloy for the energy absorption box can be met, and the requirements of the automobile energy absorption box on high plasticity and safety can be met.

    本发明提供一种超高韧性的Al‑Mg‑Si合金材料及其熔炼工艺与应用。本发明超高韧性的Al‑Mg‑Si合金材料,按质量百分比计,所述Al‑Mg‑Si合金材料包括以下组分:硅0.3‑0.5%、铁0.12‑0.25%、铜0.07‑0.12%、镁0.3‑0.6%、锰0.02‑0.1%、钛0.02‑0.05%,余量为铝及不可避免的杂质。本发明超高韧性的Al‑Mg‑Si合金材料挤压性能优异,挤压抗力小,模具寿命高,其中折弯角度:沿挤压方向≥155°,垂直挤压方向≥155°,平均晶粒尺寸:≤100μm,T7压溃无裂纹,T7经130℃*1000 h热稳定后性能:抗拉强度≥205 MPa,屈服强度≥180 MPa,延伸率A50≥10%,用于制备汽车吸能盒能够满足客户对吸能盒用铝合金的性能要求,能够满足汽车吸能盒对强塑性和安全性的要求。


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    Titel :

    Ultrahigh-toughness Al-Mg-Si alloy material as well as smelting process and application thereof


    Weitere Titelangaben:

    一种超高韧性的Al-Mg-Si合金材料及其熔炼工艺与应用


    Beteiligte:
    CHEN YUANYUAN (Autor:in) / WANG QINGQING (Autor:in) / PENG JUNFANG (Autor:in)

    Erscheinungsdatum :

    2023-08-08


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    C22C Legierungen , ALLOYS / B22D CASTING OF METALS , Gießen von Metallen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / C22B PRODUCTION OR REFINING OF METALS , Gewinnen oder Feinen von Metallen / 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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