汽车轮毂用高强韧A356铝合金的成型与控制  

MOLDING AND CONTROLLING OF HIGH STRENGTH A356 ALUMINIUM ALLOY FOR AUTOMOBILE HUB

作　　者：杨传柱[1] 许德英[1] 彭继华[2] 彭淳[2] 

机构地区：[1]广州钢铁企业集团有限公司,广东广州510381 [2]华南理工大学,广东广州510640

出　　处：《冶金丛刊》2013年第4期5-7,共3页Metallurgical Collections

基　　金：广州市科技支撑计划(2009Z2-D221)

摘　　要：高强韧A356合金的研制成功解决了低压铸造汽车轮毂塑性和韧性较差的问题,可实现汽车轻量化。强韧化A356合金的熔铸工艺路线同传统铝合金的熔铸工艺基本一致,但严格控制各节点温度以及调制合金化元素含量,采用合适的热处理工艺将进一步提高其综合力学性能。研究表明,强韧化A356铝合金铸锭的拉伸强度、延伸率均比ASTM标准要求值提高20%,且疲劳强度、抗冲击韧性提高10%。High Strength A356 AHoy successfully solves the problem of poor ductility and toughness in automobile hub by low pressure casting, which could realize automobile lightening. The casting process of High Strength A356 Alloy is essentiaUy consistent with the traditional aluminum alloy, but the tempera- ture of each node and the content of alloying elements is strictly controlled, and its mechanical properties will be further improved with appropriate heat treatment. The result shows that： both the tensile strength and elongation of high strength A356 Alloy are increased by 20% as compared with ASTM standard, and also the fatigue strength and impact toughness are increased by 10%.

关 键 词：高强韧 铝合金 低压铸造 成型 控制 

分 类 号：TG249.28[金属学及工艺—铸造]