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含有大量锂的铝合金是在一个大气压的二氧化碳和水蒸汽中进行热处理的,水蒸汽分压至少为4毫米汞柱。合金还可以含有镁或镁和铜。大气中的水蒸汽分压最好是4～250毫米汞柱,大气中杂质氮
Aluminum alloys containing large amounts of lithium are heat treated in an atmosphere of carbon dioxide and water vapor with a partial pressure of water vapor of at least 4 mmHg. The alloy may also contain magnesium or magnesium and copper. The partial pressure of water vapor in the atmosphere is preferably 4 to 250 mm Hg, and the impurity nitrogen in the atmosphere