论文部分内容阅读
采用浸镀金属锌对预处理后的硬铝ＬＹ１１合金加以表面改性；在大气环境、无中间层合金的条件下进行了超塑成形／扩散连接（ＳＰＦ／ＤＢ）工艺的研究，并对其机理进行了初步探讨。结果表明：在４７０℃、３６００ＭＰａ、４ｈ下，进行ＳＰＦ／ＤＢ工艺效果最佳。其扩散连接机理为：通过原子扩散实现连接界面的迁移；回复和再结晶引起原始连接界面的消失。
The pretreated hard aluminum LY11 alloy was surface modified with immersion zinc metal. The superplastic forming / diffusion bonding (SPF / DB) process was studied in the atmosphere without intermediate layer alloy. Mechanism of a preliminary discussion. The results showed that SPF / DB process was the best at 470 ℃, 3600MPa and 4h. The mechanism of its diffusion connection is that the migration of the connection interface is achieved by atomic diffusion; the recovery and recrystallization cause the disappearance of the original connection interface.