| 摘要 |
<p>Disclosed is a method for producing aluminum vehicular structural parts or members such as from molten aluminum alloy using a continuous caster to cast the alloy into a slab. The method comprises providing a molten aluminum alloy consisting essentially of 2.7 to 3.6 wt.% Mg, 0.1 to 0.4 wt.% Mn, 0.02 to 0.2 wt.% Si, 0.05 to0.30 wt.% Fe, 0.1 wt.% max. Cu, 0.25 wt.% max. Cr, 0.2 wt.% max. Zn, 0.15 wt.% max. Ti, the remainder aluminum, incidental elements and impurities and providing a continuous caster such as a belt caster, block caster or roll caster for continuously casting the molten aluminum alloy. The molten aluminum alloy is cast into a slab which is rolled into 'a sheet product and then annealed. The sheet has an improved distribution of intermetallic particles (Al-Fe, Al-Fe-Mn or Mg2Si)and improved formability. Thereafter, the sheet product is formed into the vehicular structural part or member with sufficient strength and formability required by automotive industry.</p> |
