| 摘要 |
The invention concerns a bar composed of an aluminium solder alloy, with the following alloy constituent fractions in weight per cent: 4.5 % ≤ Si ≤ 12 %, and optionally with one or more of the following fractions as alloy constituents in weight per cent: Ti ≤ 0.2 %, Fe ≤ 0.8 %, Cu ≤ 0.3 %,Mn ≤ 0.10 %, Mg ≤ 2.0 %, Zn ≤ 0.20 %, Cr ≤ 0.05 %, balance aluminium and unavoidable impurities, individually at most 0.05 wt%, in total at most 0.15 wt%, with additionally boron provided as alloy constituent, the alloying of boron being such that the boron content is at least 100 ppm and the aluminium alloy is free from primary Si particles having a size of more than 20 μm, in particular 10 μm. The invention further relates to an aluminium alloy product at least partially composed of an aluminium alloy, to a bar made of an aluminium alloy, and to a method for producing an aluminium alloy. |
