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應用領域

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  由于鋁的密度低,僅為鋼的1/3;資源豐富;價格適中;可成型與加工性能好;強度也不低;又無磁性;可焊性也不錯,特別是有優秀的摩擦攪拌焊接(FSW)性能;抗蝕性強;無低溫脆性,其強度與塑性(伸長率、壓縮率、韌性)均隨著溫度的降低而均衡地上升,可在負200℃以下或更低的溫度下工作;高溫性能尚可,但不能在180℃以上長期工作;可回收性強,在現行應用的結構金屬材料中是再生回收率最高的;等等。

  為了改善客船旅客居住條件,必須擴大居住面積,增加上層建筑,由此船的穩定性可能下降。不過加寬船的寬度可以提高船的穩定性,但航速會下降,采用鋁合金制造上層建筑能有效地化解此矛盾,即在保持足夠的穩定性前提下,擴大上層建筑,達到改善居住條件的目的。

  采用鋁材制造貨船的船體及上層建筑可以提高載貨量或提高航速,從而降低運輸成本。由于鋁材的無磁性使它成為制造掃雷艇與特種用途船艦與裝置的上乘材料。


 
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