基于模糊控制的挤压铸造镁合金性能研究
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摘要
采用浇注温度的不同控制方式进行了AZ80镁合金的挤压铸造,并进行了合金显微组织和力学性能的测试与分析。结果表明,模糊控制可以有效细化合金的显微组织,提高合金的力学性能。与常规PID控制相比,采用模糊PID控制的挤压铸造AZ80镁合金晶粒得到细化,抗拉强度和屈服强度分别增大21、24 MPa,断后伸长率几乎不变。
Squeeze casting of AZ80 magnesium alloy was carried out by using different control ways of pouring temperature. The microstructure and mechanical properties of the alloy were tested and analyzed. The results show that fuzzy control can effectively refine the microstructure of the alloy and improve the mechanical properties of the alloy. Compared with that by conventional PID control, the grain size of squeeze casting AZ80 magnesium alloy controlled by fuzzy PID is refined, the tensile strength and yield strength are increased by 21 and 24 MPa, respectively, and the elongation after breaking is almost unchanged.
Squeeze casting of AZ80 magnesium alloy was carried out by using different control ways of pouring temperature. The microstructure and mechanical properties of the alloy were tested and analyzed. The results show that fuzzy control can effectively refine the microstructure of the alloy and improve the mechanical properties of the alloy. Compared with that by conventional PID control, the grain size of squeeze casting AZ80 magnesium alloy controlled by fuzzy PID is refined, the tensile strength and yield strength are increased by 21 and 24 MPa, respectively, and the elongation after breaking is almost unchanged.
引文
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[8]靳立强,石冠男,于雅静,等.基于零力矩点位置和模糊控制的商用车防侧翻控制[J].汽车工程,2017,39(9):1062-1067.
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[10]王斌锐,张斌,沈国阳,等.级联气动肌肉仿人肘关节建模与模糊控制[J].机器人,2017,39(4):474-480.
[2]杨洋,王震.锻造AZ80镁合金车轮热处理工艺优化[J].轻合金加工技术,2017,45(6):63-67.
[3]Guo Z H,Hou H,Zhao Y H,et al.Optimization of AZ80magnesium alloy squeeze cast process parameters using morphological matrix[J].Transactions of Nonferrous Metals Society of China,2012,22(2):411-418.
[4]薛勇,吴耀金,杨治辉,等.循环扩挤变形AZ80镁合金的组织、织构与力学性能[J].材料导报,2017,31(16):55-59.
[6]薛勇,吴耀金,杨治辉,等.循环扩挤工艺挤压AZ80镁合金的微观组织与力学性能[J].塑性工程学报,2017,24(3):57-61.
[5]陈雷,姜楠,孟令刚,等.稀土Nd对AZ80镁合金显微组织和力学性能的影响[J].特种铸造及有色合金,2017,37(5):576-580.
[7]李卫民,王荣.AZ80镁合金半固态挤压铸造成形件质量控制研究[J].铸造技术,2012,33(1):85-87.
[8]靳立强,石冠男,于雅静,等.基于零力矩点位置和模糊控制的商用车防侧翻控制[J].汽车工程,2017,39(9):1062-1067.
[9]贾玉文,段天英,徐启国,等.模糊控制应用于研究堆功率调节系统的研究[J].原子能科学技术,2017,51(3):474-479.
[10]王斌锐,张斌,沈国阳,等.级联气动肌肉仿人肘关节建模与模糊控制[J].机器人,2017,39(4):474-480.