Simulation of the Processes of Aluminum Alloys Preforms and Semifinished Products Manufacture under Influence of Technological Heredity and Phase Transitions
With occurrence of numerous computer programs, there appears the possibility of carrying out strength and other kinds of calculations with the purpose of decreasing material capacity of products, wide replacement of steels by light aluminum-based alloys. It essentially reduces expenses for physical modeling and shortens schedule times for technological and design preparation of manufacture. At the same time, final efficiency of any technological process depends on correctness of choosing the kind of initial preforms and efficiency of their manufacture. In the present work, there are presented the results of experimental studies on the basis of regression analysis and FEM-based modeling of the processes of aluminum alloys preforms and semifinished products manufacture including such widely known processes as cutting rolled products by shear and metal stamping during crystallization. It is investigated the influence of technological heredity created by variation of cant angle of end surfaces in cutting rolled products by shear on stability of the process of subsequent longitudinal upsetting while producing preforms for bulk stamping. As a result of studying the ways of increasing high-strength aluminum alloys technological plasticity, there is revealed the possibility of using phase transitions (from solid to liquid state and back) while manufacturing semifinished products in conditions close to superplastic deformation.
shear cutting technological heredity chamfer angle misalignment bulk isothermal stamping stamping of metal during crystallization threshold stress flow stress shear viscosity
N.L.Lisunets O.M.Smirnov M.A.Tsepin
Moscow Institute of Steel and Alloys4, Leninsky Prospect, 117936, Moscow, Russia
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）