作　　者： ; ; (李卫）;

机构地区： 暨南大学理工学院材料科学与工程系

出　　处： 《材料热处理学报》 2007年第3期54-57,共4页

摘　　要： 为研究ZE10镁合金的成形性能,在20～300℃条件下对ZE10镁合金板进行拉伸力学性能、锥杯及扩孔试验.结果表明:随着变形温度的升高,ZE10镁合金板的抗拉强度逐渐下降而伸长率、'拉深+胀形'复合成形性能、扩孔成形性能显著提高.200℃、250℃锥杯实验时,ZE10镁合金试样可顺利拉深进入锥杯凹模底部直圆孔而不出现开裂,具有较小的锥杯值;而300℃时反而增加,说明在200℃、250℃时ZE10镁合金具有最佳的拉胀复合成形性能.150℃、200℃扩孔试验时,试样中心φ10 mm预制孔可胀大到凸模直径φ25 mm大小,成功实现翻边(翻边系数为0.37),显示ZE10镁合金具有很好的扩孔成形性能. In order to investigate the formability of ZE10 magnesium sheet, the tensile properties, conical cup value (CCV) and hole expansion experiments were carried out to the ZE10 magnesium alloy sheet in the temperatures ranging of 20-300°C. The results show that the tensile strength decreases while the plasticity, the drawing-bulging performance and hole expansion formability is significantly improved with the increasing of deformed temperature. When tested at 200°C and 250°C, ZE10 magnesium alloy conical cup samples can be drawn into the round hole at the underside of the conical cup die with no advents of fracture and exhibits a minimum CCV value. But tested at 300°C, the sample exhibits a increased CCV value reversely, implying that he drawing-bulging performance is declined at 300°C. When tested at 150°C and 200°C, ZE10 magnesium alloy exhibits good hole expansion property. The initial hole with a diameter of φ 10mm can be enlarged to the size of punch diameter and an upright flange with the hole flanging value of 0.37 is obtained.

关 键 词： 镁合金 拉深 胀形 复合成形 扩孔成形 性能

领　　域： [金属学及工艺] [一般工业技术] [金属学及工艺] [金属学及工艺]