锻压技术

锻压态AZ80汽车轮毂用镁合金的组织和力学性能研究

英文标题：Study on microstructure and mechanical properties of forged magnesium alloy AZ80 for automobile hub

作者：袁苗达束海波

单位：重庆工业职业技术学院

分类号：TG316；TG113

出版年,卷(期):页码：2018,43(7):183-186

摘要：

为了研究锻压态AZ80汽车轮毂用镁合金的显微组织和力学性能，采用不同的始锻温度和终锻温度进行了合金的锻压试验，并进行了显微组织和室温力学性能的测试与分析。结果表明，当始锻温度为430~510 ℃、终锻温度为320~400 ℃ 时，始锻温度和终锻温度对AZ80汽车轮毂用镁合金的抗拉强度和屈服强度影响较大，对断后伸长率影响较小。合金锻压时的始锻温度和终锻温度分别优选为470和360 ℃。采用优选的始锻温度和终锻温度时，锻压态AZ80汽车轮毂用镁合金的平均晶粒尺寸达到最小值11.4 μm、抗拉强度达到最大值386 MPa、屈服强度达到最大值287 MPa。

In order to study microstructures and mechanical properties of forged magnesium alloy AZ80 for automobile hub, the forging tests were conducted at different initial forging temperatures and final forging temperatures, and the microstructures and mechanical properties at room temperature were tested and analyzed. The results show that when the initial forging temperature is in the range of 430 ℃ and 510 ℃, and the final forging temperature is between 320 ℃ and 400 ℃, both the initial forging temperature and the final forging temperature have great effect on the tensile strength and yield strength of magnesium alloy AZ80 for automobile hub, which have little effect on the elongation after fraction. Therefore, the initial forging temperature and the final forging temperature of alloy are optimized at 470 ℃ and 360 ℃, respectively. Furthermore, using the optimized initial forging temperature and final forging temperature, the average grain size of forged magnesium alloy AZ80 for automobile hub reaches the minimum value of 11.4 μm, and the tensile strength and yield strength of alloy reach the maximum value of 386 MPa and 287 MPa, respectively.

基金项目：

全国机械职业教育“十二五”规划专项研究课程（JXHZW20140106）

袁苗达（1973-），男，学士，副教授，E-mail：aw7220@163.com

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