摘要
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3．5-8．5m／s、压射压力15-35MPa范围内，采用6．5m／s压射速度、25MPa压射压力的半固态压铸AZ91D镁合金的疲劳性能最佳。
AZ91D magnesium alloys for automobile were produced by semi-solid die casting with different process parameters, and the microstructure, phase composition and fatigue property were tested. The results show that appropriate process parameters of semi-solid die casting could refine the microstructure of AZ91D alloys for automobile by semi-solid die casting and improve its fatigue property. Moreover, when the injection speed is between 3.5 m/s and 8.5m/s and the injection pressure is between 15 MPa and 35MPa, the injection speed with 6.5m/s and injection pressure with 25MPa, can make the alloy obtain the best fatigue property.
出处
《热加工工艺》
CSCD
北大核心
2014年第11期84-86,共3页
Hot Working Technology
关键词
半固态压铸
镁合金
疲劳性能
工艺参数
semi-solid die casting
magnesium alloy
fatigue property
process parameters
