摘要
铝合金低压铸造轮毂的使用性能与其微观组织密切相关,铝合金的材料特性与低压铸造的工艺原理奠定了轮毂制造的基础,而工艺参数对轮毂的组织与性能有一定影响。在微观组织上,初晶硅和共晶硅的形貌、α-Al相的晶粒结构以及第二相粒子的存在和作用等都会对轮毂的性能产生影响。微观组织与轮毂的强度、塑性和韧性有密切的关系,其途径是影响晶界的强度和位错运动。通过采用优化合金成分设计、铸造工艺参数和改进热处理工艺的策略来改善轮毂的微观组织和增强轮毂的综合性能。
The performance of aluminum alloy low-pressure casting wheels is closely related to their microstructure.The material properties of aluminum alloy and the process principle of low-pressure casting lay the foundation for wheel hub manufacturing,and process parameters have a certain impact on the microstructure and performance of wheel hubs.At the microstructure level,the morphology of primary and eutectic silicon,the grain structure,α-Al phase,and the presence and action of second phase particles all have an impact on the performance of the wheel hub.The microstructure is closely related to the strength,plasticity,and toughness of the wheel hub by affecting the strength of grain boundaries and dislocation motion.By adopting strategies of optimizing alloy composition design,casting process parameters,and improving heat treatment processes,the microstructure of the wheel hub is improved and the overall performance of the wheel hub is enhanced.
作者
郑艳银
ZHENG Yanyin(Qinhuangdao Daika Xinglong Wheel Hub Co.,Ltd.,Qinhuangdao,Hebei,066000,China;Hebei Province Light Alloy Wheel Technology Innovation Center,Qinhuangdao,Hebei,066000,China)
关键词
铝合金
低压铸造
轮毂组织
力学性能
aluminum alloy
low pressure casting
wheel hub organization
mechanical properties
