Моделирование эволюции структуры при горячей прокатке алюминиевых сплавов в программном комплексе Deform

摘要

The study provides modeling of aluminum alloy 5182 БТ (Al-Mg 4,5%) structure evolvementduring hot rolling in each stand of 5-stand continuous hot rolling mill. Mathematical modelingwas made in DEFORM software product, Johnson-Mehl-Avrami-Kolmogorov equation was usedfor recrystallization kinetics setup. DEFORM enables to consider recrystallization of three types:dynamic, meta-dynamic and static recrystallization. Proceeding from actual rolling processtemperature and speed parameters, the task was converted to static recrystallization calculation.Input coefficients were taken from literature data review. The output is volume of recrystallizedgrains and their sizes calculated throughout the rolling process.Description of processes related to grain size changes in rolling aluminum alloys is peculiar dueto lack of consistent patterns. This is explained by the fact that grain growth during rolling isinfluenced by many factors associated with both internal metal structure and individual processspecifics. That is why modeling results should be compared with industrial experimental data.In this case, texture and structure evolvement data received as a result of Hot Rolling Mill 2800forced stop with subsequent quenching of metal were used for comparison