含钛镁合金新能源汽车型材挤压工艺优化

Optimization of Extrusion Process for New Energy Automotive Profiles Made from Titanium-magnesium Alloy

采用不同的挤压温度、挤压速度和挤压比进行了Mg-Al-Zn-Ti新型含钛镁合金新能源汽车型材的挤压试验,并进行了力学性能的测试与分析。结果表明:随挤压温度升高(300°C到400 t)、挤压速度增快(1 m/min到5 m/min)、挤压比增大(10到26)时,试样的抗拉强度和屈服强度均先增大后减小。与300 t挤压相比,挤压温度360 t时试样的抗拉强度和屈服强度分别增大17%、31%;与1 m/min挤压速度进行比较,采用挤压速度4 m/min挤压时试样的抗拉强度增大,14%、屈服强度增大23%;与挤压比10相比,釆用挤压比22进行挤压时试样的抗拉强度增大9%、屈服强度增大14%。Mg-Al-Zn-Ti新型含钛镁合金新能源汽车型材的挤压工艺优化参数:挤压温度360°C、挤压速度4 m/min、挤压比22。

The extrusion tests of Mg-Al-Zn-Ti new titanium・containing magnesium alloy for new energy automobile profiles were carried out with different extrusion temperature,extrusion speed and extrusion ratio,and the mechanical properties were tested and analyzed.The results show that the tensile strength and yield strength of the samples increase firstly and then decrease when the extrusion temperature is increased from 300°C to 400七,the extrusion speed is increased from 1 m/min to 5 m/min,and the extrusion ratio is increased from 10 to 26.Compared with the results from extrusion at 300°C,the tensile strength and yield strength of the specimen are increased by 17%and 31%,respectively,at an extrusion temperature of 360 X.;compared with the results of extrusion speed of 1 m/min,the tensile strength and yield strength of the samples are increased by 14%and 23%,respectively when the extrusion speed is 4 m/min.Compared with the results of extrusion ratio of 10,the tensile strength and yield strength of the samples are increased by 9%and 14%,respectively,when the extrusion ratio was increased to 22.Therefore,the extrusion process optimization parameters of the new Mg-Al-Zn-Ti titanium-containing magnesium alloy for new energy automobile profiles are the extrusion temperature of 360°C,extrusion speed of 4 m/min,extrusion ratio of 22.