摘要
通过调整过热处理温度研究了亚共晶铝合金Al Si7Mg0.6熔体的显微组织及力学性能变化规律。结果表明,Al Si7Mg0.6熔体经过过热处理后,Si形貌转变为细小的纤维状或粒状;合金基体的铁相形态由棱边尖锐的条状转变为骨骼状,减少了对基体的割裂作用。在800℃过热温度内,随着过热温度的增加,合金的抗拉强度和伸长率增大。
The microstructure and mechanical properties of the sub eutectic alloy AlSi7Mg0.6 melt were studied by the adjustment of superheating temperature. The results show that the morphology of Si is transformed into small fibrous or granular after superheating treatment of AlSi7Mg0.6 melt. The morphology of iron phase in the alloy matrix transforms from strip with sharp edge to skeletal shape, which reduces the fragmentation effect on the matrix. With the increase of the superheating temperature within 800℃, the tensile strength and elongation of the alloy increase.
出处
《热加工工艺》
CSCD
北大核心
2017年第17期105-106,共2页
Hot Working Technology
关键词
过热
显微组织
抗拉强度
伸长率
superheating
microstructure
tensile strength
elongation
