论文部分内容阅读
采用不同的工艺参数进行了汽车用AZ91D镁合金的半固态压铸,并进行了显微组织、物相组成和疲劳性能的测试与对比分析。结果表明,选用合适的半固态压铸工艺参数,可以明显细化AZ91D镁合金的组织,提高其疲劳性能;在压射速度3.5~8.5 m/s、压射压力15~35 MPa范围内,采用6.5 m/s压射速度、25 MPa压射压力的半固态压铸AZ91D镁合金的疲劳性能最佳。
The semi-solid die casting of AZ91D magnesium alloy for automobile was carried out with different technological parameters, and the microstructure, phase composition and fatigue properties were tested and compared. The results show that the microstructure of AZ91D magnesium alloy can be obviously refined and its fatigue performance can be obviously refined by selecting proper semi-solid die-casting process parameters. When the injection speed is 3.5-8.5 m / s and the injection pressure is 15-35 MPa, m / s injection speed, 25 MPa injection pressure of semi-solid AZ91D magnesium alloy die-casting the best fatigue properties.