摘要
对铁路接触网用定位支座(材质AlSi7Mg0.6高强铝合金)进行了分析。采用两次氩气精炼配合锶变质的方式对合金熔体进行了处理,进行了合金的熔炼、成型和铸件的固溶时效。通过对比试验,确定了固溶温度535℃+时效170℃×5 h的T6处理工艺。经过T6处理的AlSi7Mg0.6合金抗拉强度达到310MPa,屈服强度达到258MPa,硬度达到104 HB。
The positioning support （AlSi7Mg0.6 high strength aluminum alloy） for the railway contact net was analyzed. The alloy melt treatment was performed by using two times the argon refining and Sr modification. Alloy smelting, molding and solid solution and aging of the castings were carried out. Through the contrast test, T6 treatment process of solid solution lemperature of 535℃ and aging at 170℃ for 5 h was ascertained. After T6 treatment, the tensile strength of AISiTMg0.3 alloy is 310 M Pa, theyield strength is 258 MPa, and the hardness is 104 HB.
出处
《热加工工艺》
CSCD
北大核心
2015年第7期108-109,112,共3页
Hot Working Technology
