摘要
铝合金是目前采用最多的轻金属合金材料,而Al-Si系列合金是铝合金系中应用最早最广泛的铝合金。本文从汽车轻量化出发,介绍了Al-Si系列合金在组织性能方面的国内外研究现状。组织结构是影响其性能的最重要因素,而冷却速度、变质处理对Al-Si系列合金微观组织结构的影响甚为深远,进而影响铝合金零部件的机械性能。最后,讨论了提高Al-Si系列合金性能的理论方法,并对铝合金组织性能的优化进行了展望。
Al alloy is one kind of light alloy materials which is used most extensively at present,and Al-Si series alloy is used the earliest and most comprehensively.In this paper,the researches on the microstructure and properties of Al-Si series alloy are introduced on the basis of lightweight of automobile.The microstructure is the most important factor influencing its properties.Moreover,cooling rate and modification have a far-reaching influence on microstructure of Al-Si series alloy,and then influence the mechanical properties of Al alloy parts.At last,the ways to strengthen alloys are discussed,and the future trends and performance optimization of cast Al alloy are previewed.
基金
山东省优秀中青年科学家科研奖励基金资助项目(BS2009ZZ010)
山东省高等学校科技计划项目(NoJ09LD11)
