摘要
为了优化7B04铝合金厚板生产过程,对7B04铝合金厚板生产过程中淬火、压光、拉伸过程应力场的变化和分布情况进行了数值分析.结果表明:压光过程可以降低淬火应力并使淬火应力分布均匀化,但这种作用被后续的拉伸过程大大减弱,并且压光过程导致板材两端产生较大的应力集中区域;拉伸是降低铝板材应力和使应力均匀分布的关键环节;当纵向塑性延伸率为2.5%时,拉伸效果最好.
In order to optimize the manufacturing procedure of the thick 7B04 aluminum alloy, numerical simulation method is employed to analyze the stress field of thick 7B04 aluminum alloy board during manufacturing procedure of quenching, calendaring and stretching. Simulation results show that the calendaring procedure helps to decrease the stress and redistribute the stress uniformly, but this function is weaken greatly by stretching , and the calendaring procedure also leads to stress concentration at the two ends of the board, stretching is a key link in decreasing the stress and redistributing the stress uniformly, when the residual plastic deformation is about 2. 5% , the effect of the stretching is the best.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2005年第1期70-74,共5页
Materials Science and Technology