中文摘要：

提出基于固体颗粒介质成形（SGMF）工艺的镁合金板材差温拉深工艺,并展开试验研究。通过对AZ31B镁合金薄板进行差温拉深成形试验,研究了成形温度、拉深速度、压边力、压边间隙、凹模圆角和润滑条件对拉深性能的影响,确定AZ31B镁合金板料最佳成形工艺参数。结果表明：该工艺可显著提高镁合金板材的成形性能,成形温度及拉深速度对板料拉深性能影响较大,板料最佳成形温度区间为290～310℃,颗粒介质与板料理想温差为110～150℃;压边力和压边间隙对拉深性能产生联合影响;此外,凹模圆角和润滑条件也对拉深性能有一定的影响。当上述工艺参数达到最佳值时成功拉深出极限拉深比（LDR）为2.41的工件。

英文摘要：

The non-isothermal drawing of the magnesium alloy sheet in solid granular medium forming（SGMF） technology was put forward.The non-isothermal drawing experiment of the AZ31B magnesium alloy sheet was conducted,through which,the impacts of the forming temperature,the drawing speed,the blank holder force and the blank holder gap as well as the female die fillet and lubrication condition on the drawing performance were studied,then the optimal process parameters were determined for AZ31B magnesium alloy sheet.The results show that this process is beneficial to significantly enhance the formability of the magnesium alloy sheet,the forming temperature and the drawing speed have great impact on the drawing performance of the sheet metal,whose optimal forming temperature is 290-310 ℃,and the ideal temperature difference between the granular medium and the sheet metal is supposed to be 110-150 ℃.The blank holder force and the blank holder gap combine to make effects on the drawing performance.Besides,the female die fillet and lubrication condition also have certain impact on the drawing performance.The workpiece with limit drawing ratio（LDR） of 2.41 is successfully obtained when the previous parameters achieve the corresponding optimal values.