Feature of flow stress of aluminum sheet used for can during hot compression

The flow stress feature of aluminum sheet used for pressure can during plastic deformation at elevated temperature was studied by isothermal compression test using Gleeble 1 500 dynamic materials testing machine. The experimental results show that the steady state deformation is remarkable when the material is deformed in the temperature range of 350～500 ℃ at strain rates within the range of 10 -2 ～10.0 s -1 . The material is sensitive to positive strain rate. A hyperbolic sine relationship is found to correlate well the flow stress with the strain rate, and an Arrhenius relationship with the temperature. Semi empirical constitutive equations of the flow stress are derived from all experimental data for tested material during plastic deformation at elevated temperature by polyelement linear regression analysis. [

罐用铝材的研究现状及存在的问题分析

分析了易拉罐和压力罐用铝材的国内外研究与发展现状及存在的主要问题 ,并指出压力罐用铝材国产化研究中的关键技术和解决的主要途径。

造纸法烟草薄片浆液、白水及成品中铝的测定

采用氟离子选择电极法测定造纸法烟草薄片浆液、白水及成品中的铝。研究了影响测定结果的主要因素，确定了适宜的测定条件。结果表明：当F^-的初始浓度为1×10^-3mol／L时，电极电位（E）与铝量（ρ）线性关系良好（R=0．9996），线性范围为2．0～10．0μg／mL，回收率为84．71％～88．42％，RSD为0．57％～3．1％。该法通过控制溶液中氟离子浓度从而实现铝的测定，方法适合于样品中铝的分析。