摘要
采用有限元法研究了爆炸复合制备Al/Mg/Al叠层板的轧制过程。结果表明:280℃时AZ31、7A52两种合金流变应力接近,具有较好的塑性,有利于叠层板轧制的均匀变形;咬入后开始阶段应变主要集中在铝合金板上,而镁合金板只有少数部位出现应变;随时间延长,铝合金板与镁合金板均发生了较为均匀的变形,有利于整体形变强化;随压下率的增加,铝合金板和镁合金板各点最大应变、最大应力、轧制力、咬入时间均增加,确立了压下率与最大轧制力、压下率与咬入时间的关系。
The rolling processing of A1/Mg/A1 laminates fabricated by explosion cladding method was simulated by finite element methods. The results show that the flow stress ofAZ31 alloy is closed to that of 7A52 alloy when rolling temperature is 280 ℃, and the plastic of it is good. All points mentioned above show that there is a uniform strain distribution when rolling A1/Mg/A laminates at temperature 280 ℃. At the initial stage after entering, mainly strain occurs on the A1 alloy plate. With the rolling time increasing, strain uniform distributes on A1 plate and Mg plate, which can help for deformation strengthening. The maximum strain, stress, rolling force Fmax and entering time are increased, with reducing ratio. The relationship between rolling rate and maximum rolling force, rolling rate and entering time is established.
出处
《热加工工艺》
CSCD
北大核心
2011年第24期101-103,共3页
Hot Working Technology
基金
南京理工大学自主科研专项计划资助项目(2011XQTR04)
作者简介
顾春飞（1986-），男，江苏南通人，硕士研究生电话：13951652648； E-mail：xpzhang@mail．njust．edu．cn
张新平（1975-），男，江西万年人，副教授，博士生导师．主要研究方向为轻金属变形、数值模拟：电话：025．84303983；E-mail：xpzb．ang@mail．njust．edu．cn
