研究了在直流磁场及频率为10 Hz、30 Hz交流磁场作用下AZ80镁合金凝固组织、合金元素在晶内含量及合金硬度的变化。结果表明,AZ80镁合金经交流磁场处理后,晶粒明显细化,晶界变窄,夹杂物的尺寸显著减小;经直流磁场处理后,晶粒大小没有明显变化,但晶界变窄,夹杂物的尺寸减小。无论经交流磁场还是直流磁场处理后,Al和Zn在晶粒内部的含量均比未经磁场处理有了明显增加。此外,经磁场处理后,合金硬度有一定程度的提高。初步阐明了这些现象产生的原因。
Solidification structure,alloy element content inside grain and hardness of AZ80 Mg alloy solidified under DC magnetic field and AC magnetic field with frequency of 10 Hz and 30 Hz were studied.The results show that compared to the sample without magnetic field,the grain of AZ80 Mg alloy is refined obviously,the grain boundary becomes thinner,and inclusions distribute more uniformly,size and amount of the inclusions are reduced in the sample treated with the AC magnetic field.After treatment with DC magnetic field,the size of grain in the alloy has no evident difference with that without magnetic field,but the grain boundary becomes thinner and the size of inclusions becomes smaller.Whether with the DC or AC magnetic field,Al and Zn content inside grain and hardness of the alloy are increased.Furthermore,the reason which leads to these phenomenon is primarily discussed.
参考文献
| [1] | 韩夏云,龙晋明,薛方勤,郭忠诚.镁及镁合金应用与表面处理现状及发展[J].轻金属,2003(02):48-51. |
| [2] | 訾炳涛,王辉.镁合金及其在工业中的应用[J].稀有金属,2004(01):229-232. |
| [3] | Mordike B L;Ebert T .Magnesium:Properties-applications-potential[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2001,302:37-45. |
| [4] | 曾荣昌,柯伟,徐永波,韩恩厚,朱自勇.Mg合金的最新发展及应用前景[J].金属学报,2001(07):673-685. |
| [5] | Han Y;Ban C Y;Guo S J et al.Alignment behavior of primary AI3Fe phase in AI-Fe alloy under a high magnetic field[J].Materials Letters,2007,61(04):983-986. |
| [6] | Asai S .Recent development and prospect ofelectromagnetic processing ofmaterials[J].Science and Technology of Advanced Materials,2000,1(04):191-200. |
| [7] | Dong J;Cui J Z;Yu F X et al.Effect of low-frequency electromagnetic casting on the castability,microstructure,and tensile properties of direct-chill cast AI-Zn-Mg-Cu alloy[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2004,35(08):2487-2494. |
| [8] | Canfeng FANG,Xingguo ZHANG,Hai HAO,Shouhua JI,Junze JIN.Effects of High Magnetic Field on Solidification and Corrosion Behaviors of Magnesium Alloy[J].材料科学技术学报（英文版）,2007(06):806-810. |
| [9] | 宫明龙,赵骧,宋建宇,王守晶,左良.强磁场对Fe-0.76%C合金共析点的影响[J].材料热处理学报,2009(05):1-4,18. |
| [10] | 王亚男,廖代强,武战军.稳恒磁场对铁素体转变的影响[J].材料热处理学报,2005(05):105-108. |
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