1. 毕业设计（论文）的内容和要求

镁合金具有密度小（1.8g/cm3镁合金左右），比强度高，比弹性模量大，散热好，消震性好，承受冲击载荷能力比铝合金大，耐有机物和碱的腐蚀性能好的特点。

主要合金元素有铝、锌、锰、铈、钍以及少量锆或镉等。

az91d合金是铸造镁铝锌合金，它的强度高且耐蚀性相对较好，主要用于电器产品的壳体、小尺寸薄型或异型支架等。

2. 参考文献

1. Liu F, Chen X, Gu Y, et al. Effect of Pretreatment and Annealing on Aluminum Coating Prepared by Physical Vapor Deposition on AZ91D Magnesium Alloys[J]. 2016, 11(7):5655-5668. 2. Tahmasebifar A, Kayhan S M, Evis Z, et al. Mechanical, electrochemical and biocompatibility evaluation of AZ91D magnesium alloy as a biomaterial[J]. Journal of Alloys amp; Compounds, 2016, 687:906-919. 3. Fu Z, Zhao, Xiao H， et al. Microstructure and Mechanical Properties of CNT-Reinforced AZ91D Composites Fabricated by Ultrasonic Processing[J]. Acta Metallurgica Sinica, 2016, 29(7):652-660. 4. Zhen Z, Mao W, Chen H, et al. Effect of electro-magnetic stirring process parameters on the microstructure of semi-solid AZ91D alloy[J]. Journal of University of Science amp; Technology Beijing, 2003, 25(4):341-345. 5. Sun H, Ma S. Microstructural characteristics and protection performances of plasma-sprayed Al2O3#8211;Al composite coatings on AZ91D magnesium alloy[J]. Science amp; Engineering of Composite Materials, 2016, 23(5):467-474. 6. Kayhan S M, Tahmasebifar A, Koccedil; M, et al. Experimental and numerical investigations for mechanical and microstructural characterization of micro-manufactured AZ91D magnesium alloy disks for biomedical applications[J]. Materials amp; Design, 2015, 93:397-408. 7. Yao X, Xie P, Sun Y, et al. Properties of AZ91D Composite Ceramic Coatings Formed with Adding Al_2O_3 Colloid in MAO Electrolyte[J]. Rare Metal Materials amp; Engineering, 2016, 45(8):2092-2097. 8. Xu Y, Hu L, Jia J, et al. Microstructure evolution of a SIMA processed AZ91D magnesium alloy based on repetitive upsetting-extrusion (RUE) process[J]. Materials Characterization, 2016, 118:309-323.. 9. 李玉兰, 刘江, 彭晓东. 镁合金压铸件在汽车上的应用[J]. 特种铸造及有色合金, 1999(S1):124-126. 10. 虞炳西, 张绥生, 万晓景. Ti-6Al-4V合金的热盐应力腐蚀[J]. 金属学报, 1982(3):264-271. 11. 薛文斌, 邓志威, 来永春,等. ZM5镁合金微弧氧化膜的生长规律[J]. 材料热处理学报, 1998(3):42-45.

3. 毕业设计（论文）进程安排