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在改进AlMgSi合金的韧度方面,添加锰的有效作用很早以前就有所报导。近来,用膜覆法从破断机构和断口显微观察入手,来研究脆性的破断过程。弥散分布的含锰质点能阻止滑移,避免了晶粒边界形成较高的应力集中所引起的危险的简单滑移。细小
The effective effect of adding manganese has been reported long ago in terms of improving the toughness of AlMgSi alloys. Recently, the film coating method was used to study the brittle breaking process from the breaking mechanism and fracture microscopic observation. Diffusions of manganese-containing particles prevent slippage and avoid the risk of simple slippage caused by the higher stress concentration at grain boundaries. small