本发明提供一种Al‑Mg系铝合金板材、其制备方法和应用。该制备方法包括:步骤S1,将合金原料依次进行熔炼和铸造,得到铝合金铸锭;合金原料包括按质量百分比计的如下组分:Si含量≤0.4%;Fe含量≤0.4%;Mn含量0.2%~0.5%;Mg含量2.2%~6.0%;Cr含量≤0.3%;Cu含量0.05~0.5%,余量为Al及杂质,且杂质总量低于0.15wt%,每种杂质低于0.05wt%;步骤S2,将铝合金铸锭进行两级均匀化处理,得到均匀化铝合金铸锭;步骤S3,将均匀化铝合金铸锭依次进行热轧、一次冷轧、中间退火、最终冷轧和成品退火,得到铝合金板材。该制备方法提高了材料的磷化反应活性和抗晶间腐蚀性。
The disclosure relates an Al—Mg series aluminum alloy sheet, a preparation method and use thereof. The preparation method includes: step S1, melting and casting the alloy raw materials in sequence to obtain an aluminum alloy ingot; step S2, subjecting the aluminum alloy ingot to a two-stage homogenization treatment so as to obtain a homogenized aluminum alloy ingot; and step S3, subjecting the homogenized aluminum alloy ingot to hot rolling, primary cold rolling, intermediate annealing, final cold rolling, and finished product annealing in sequence to obtain the aluminum alloy sheet.
Al-Mg系铝合金板材、其制备方法和应用
2023-04-28
Patent
Elektronische Ressource
Chinesisch
IPC: | C22C Legierungen , ALLOYS / B62D MOTOR VEHICLES , Motorfahrzeuge / C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS , Verändern der physikalischen Struktur von Nichteisenmetallen oder Nichteisenlegierungen / C23C Beschichten metallischer Werkstoffe , COATING METALLIC MATERIAL |