摘要
全面评述了用于汽车轻量化的铸造铝和镁合金及铸造工艺的发展。已开发的汽车用新型合金有耐磨铝合金、抗蠕变镁合金及高强度/韧性镁合金。在工艺前沿方面,开发了真空辅助压铸和高真空压铸技术,用于生产高整体性的车体和底盘零件。用低压金属型铸造工艺生产结构用薄壁空心铸件。包覆铸造技术不断得到发展,使用混合材料设计汽车的子系统,例如发动机支架、仪表板梁成为可能。开发的模拟工具用来预测不同组分之间的界面相互反应和包覆铸造系统的结构完整性,并且已被铸造实验证实。
This paper provides an overview of alloy and process developments in aluminum and magnesium castings for lightweight automotive applications. Wear-resistant aluminum alloys, creep-resistant and high strength/ductility magnesium alloys have been developed for automotive applications. On the process front, vacuum-assisted die casting and high vacuum die casting technologies have been developed for high-integrity body and chassis applications. Thin-wall and hollow casting components are being produced by low-pressure die casting processes for structural applications. Overcasting technology is gaining traction and has enabled mixed material designs for automotive sub-systems such as engine cradles and instrument panel beams. Simulation tools developed to predict the interracial interactions of the dissimilar components and the structural integrity of the overcast systems are being validated in the casting trials.
出处
《铸造》
CAS
CSCD
北大核心
2011年第2期113-119,共7页
Foundry
关键词
汽车轻量化
铝合金
镁合金
压铸
lightweight automotive
aluminum alloy
magnesium alloy
die casting
作者简介
罗爱华（1964-），男，1993年获加拿大温莎大学工程材料博士学位，现任美国通用汽车公司全球研发中心技术院士，主持轻合金研究（铝，镁合金及金属基复合材料），汽车制造工艺（铸造，成形及连接）及汽车轻合金结构件的开发。E—mail：alan．luo@gin．com
