利用Fluent软件主要研究半固态A356稀土合金熔体在施加电磁搅拌后的温度场分布规律以及电磁场对半固态A356稀土合金熔体中初生α相形貌演变的影响.结果表明:在电磁搅拌相同时间(15 s)、不同频率下,熔体在40 Hz时的温度场较5 Hz、15 Hz和30 Hz时的分布更加均匀;半固态A356-Yb合金熔体经620℃浇注,在电流频率30 Hz时搅拌15s,并在590℃保温10 min,初生相的平均等积圆直径为62.3 μm,平均形状因子为0.78,此时,晶粒最圆整细小,组织形貌最佳.
参考文献
| [1] | 陈航;接金川;付莹;马红军;李廷举.直流脉冲磁场和孕育处理共同作用下纯铝的细化[J].中国有色金属学报（英文版）,2014(5):1295-1300. |
| [2] | 白云峰;周月明;严彪;张永杰;徐达鸣;郭景杰;傅恒志.电磁场在材料凝固加工领域的应用[J].铸造,2008(2):105-109. |
| [3] | S. W. Oh;J. W. Bae;C. G. Kang.Effect of Electromagnetic Stirring Conditions on Grain Size Characteristic of Wrought Aluminum for Rheo-forging[J].Journal of Materials Engineering and Performance,20081(1):57-63. |
| [4] | CHUL KYU JIN;CHANG HYUN JANG;CHUNG GIL KANG,.Effect of the Process Parameters on the Formability, Microstructure, and Mechanical Properties of Thin Plates Fabricated by Rheology Forging Process with Electromagnetic Stirring Method[J].Metallurgical and Materials Transactions, B. Process metallurgy and materials processing science,20141(1):193-211. |
| [5] | Hua-jie Wu;Ning Wei;Yan-ping Bao;Guo-xin Wang;Chao-ping Xiao;Jin-jin Liu.Effect of M-EMS on the solidification structure of a steel billet[J].矿物冶金与材料学报,2011(02):159-164. |
| [6] | 陈正周.引晶法制备半固态A356铝合金浆料[J].中国有色金属学报（英文版）,2012(06):1307-1312. |
| [7] | S Y GAO;Q C LE;Z Q ZHANG.Grain refinement of AZ31 magnesium alloy by electromagnetic stirring under effect of grain-refiner[J].Bulletin of Materials Science,20124(4):651-655. |
| [8] | Metan, V.;Eigenfeld, K..Controlling mechanical and physical properties of Al-Si alloys by controlling grain size through grain refinement and electromagnetic stirring[J].The European physical journal: Special topics,2013:139-150. |
| [9] | 朱艳丽;赵君文;李微;朱振宇;戴光泽;张鲲.电磁搅拌对7A04铝合金大体积半固态浆料组织的影响[J].中国有色金属学报,2014(11):2735-2742. |
| [10] | 张景新;张奎;刘国钧;徐骏;石力开.电磁搅拌制备半固态材料非枝晶组织的形成机制[J].中国有色金属学报,2000(4):511. |
| [11] | 陈钊;陈长乐;温晓莉;文军.旋转磁场对凝固组织形成的影响[J].物理学报,2008(10):6277-6282. |
| [12] | H. Mohammadi;M. Ketabchi;A. Kalaki.Microstructure Evolution of Semi-Solid 7075 Aluminum Alloy During Reheating Process[J].Journal of Materials Engineering and Performance,20117(7):1256-1263. |
| [13] | Z. Fan;G. Liu;M. Hitchcock.Solidification behaviour under intensive forced convection[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20050(0):229-235. |
| [14] | 刘政;周翔宇.分级电磁搅拌对半固态Al-Cu合金凝固组织的影响[J].中国有色金属学报,2015(1):49-57. |
| [15] | R. Ritwik;A. K. Prasada Rao;B. K. Dhindaw.Low-Convection-Cooling Slope Cast AlSi7Mg Alloy: A Rheological Perspective[J].Journal of Materials Engineering and Performance,20139(9):2487-2492. |
| [16] | ZHANG Zhifeng;CHEN Xingrun;XU Jun;SHI Likai.Numerical simulation on electromagnetic field, flow field and temperature field in semisolid slurry preparation by A-EMS[J].稀有金属（英文版）,2010(06):635-641. |
| [17] | 陈兴润;张志峰;徐骏;石力开.电磁搅拌法制备半固态浆料过程电磁场、流场和温度场的数值模拟[J].中国有色金属学报,2010(5):937-945. |
| [18] | 左玉波;朱庆丰;王向杰;崔建忠.低频电磁铸造过程中温度场的形成机理[J].东北大学学报：自然科学版,2012(8):1145-1149. |
| [19] | 王孟君;杨刚;黄长清;陈彬.6061铝合金在线淬火温度场和应力场模拟[J].中国有色金属学报（英文版）,2014(7):2168-2173. |
| [20] | 刘政;刘小梅;朱涛;谌庆春.低频电磁搅拌对半固态铝合金中稀土分布的影响[J].金属学报,2015(3):272-280. |
| [21] | 赵秀艳 .金属射流的MHD特性分析[D].山东农业大学,2009. |
| [22] | LIU Zheng;MAO Wei-min;LIU Xiao-mei.Effect of pouring temperature on fractal dimension of primary phase morphology in semi-solid A356 alloy[J].中国有色金属学报（英文版）,2009(05):1098-1103. |
| [23] | WANG Shun-cheng;CAO Fu-rong;WEN Jing-lin.Effect of original microstructures on microstructural evolution of A2017 semi-solid alloy billets during reheating[J].中国有色金属学会会刊（英文版）,2005(03):577-582. |
| [24] | 姜巨福;罗守靖.Reheating microstructure of refined AZ91D magnesium alloy in semi-solid state[J].中国有色金属学会会刊（英文版）,2004(6):1074-1081. |
| [25] | Weimin MAO;Chenglin GUI;Aimin ZHAO;Jilian YANG;Xueyou Zhong.Effect of Pouring Process on the Microstructures of Semi-Solid AlSi7Mg Alloy[J].材料科学技术学报(英文版),2001(06):615-619. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%