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OALib Journal期刊
ISSN: 2333-9721
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铝合金凝固过程枝晶破碎现象的定量化研究*
DOI: 10.11900/0412.1961.2014.00501, PP. 677-684
Keywords: 铝合金,X射线同步辐射,凝固,枝晶破碎,糊状区,电磁场
Abstract:
利用X射线同步辐射影像技术对Al-15%Cu(质量分数)合金凝固过程的枝晶生长和破碎现象进行了实时观察.通过加入脉冲电磁场和改变枝晶生长方向获得了大量不同实验条件下的动态影像.利用Matlab软件对实验结果进行定量化分析,开发了统计测量程序,统计了枝晶破碎数量随不同实验条件的变化,测量了枝晶破碎数量沿糊状区深度、糊状区固相率的分布关系.结果表明,加入电磁场、逆重力方向生长和生长速度快的枝晶会产生更多的枝晶破碎;枝晶破碎数量沿着糊状区深度、糊状区固相率呈一定的Gauss分布,且在固相率为0.45左右达到峰值.最后分析了速度场造成的缩颈断裂、重力场造成的溶质富积以及电磁场造成的晶间对流对上述定量化结果的影响程度.
| [1] | Jie W Q, Zhou Y H. J Northwest Polytech Univ, 1988; 6(1): 29 (介万奇, 周尧和. 西北工业大学学报, 1988; 6(1): 29)
|
| [2] | Grange G, Gastaldi J, Jourdan C, Billia B. J Cryst Growth, 1995; 151: 192
|
| [3] | Mathiesen R H, Arnberg L, Ramsoskar K, Weitkamp T, Rau C, Snigirev A. Metall Mater Trans, 2002; 33B: 613
|
| [4] | Mathiesen R H, Arnberg L. Mater Sci Eng, 2005; A413: 283
|
| [5] | Mathiesen R H, Arnberg L, Bleuet P, Somogyi A. Metall Mater Trans, 2006; 37A: 2515
|
| [6] | Limodin N, Salvo L, Suery M, DiMichiel M. Acta Mater, 2007; 55: 3177
|
| [7] | Campanella T, Charbon C, Rappaz M. Metall Mater Trans, 2004; 35A: 3201
|
| [8] | Li M J, Tamura T, Omura N, Miwa K. J Alloys Compd, 2010; 494: 116
|
| [9] | Wang T M, Zhu J, Chen Z N, Xu J J. Sci Sin Phy, Mech Astron, 2011; 41: 23 (王同敏, 朱 晶, 陈宗宁, 许菁菁. 中国科学: 物理学 力学 天文学, 2011; 41: 23)
|
| [10] | Liotti E, Liu A, Vincent R, Kumar S, Guo Z, Connolley T, Dolbnya I P, Hart M, Arnberg L, Mathiesen R H, Grant P S. Acta Mater, 2014; 70: 228
|
| [11] | Shu D, Sun B D, Mi J W, Grant P S. Phys Metall Mater Sci, 2012; 43A: 3755
|
| [12] | Mapelli C, Gruttadauria A, Peroni M. J Mater Process Technol, 2010; 210: 306
|
| [13] | Ruvalcaba D, Mathiesen R H, Eskin D G, Arnberg L, Katgerman L. Acta Mater, 2007; 55: 4287
|
| [14] | Pataric A, Mihailovic M, Gulisija Z. J Mater Sci, 2012; 47: 793
|
| [15] | Liu S, Lu S Z, Hellawell A. J Cryst Growth, 2002; 234: 740
|
| [16] | Yasuda H, Ohnaka I, Kawasaki K, Suglyama A, Ohmichi T, Iwane J, Umetani K. J Cryst Growth, 2004; 262: 645
|
| [17] | Stransky K, Kavicka F, Sekanina B, Stetina J, Gontarev V, Dobrovska J. Mater Technol, 2011; 45: 163
|
| [18] | Arnberg L, Mathiesen R H. JOM, 2007; 59(8): 20
|
| [19] | Ananiev S, Nikrityuk P, Eckert K. Acta Mater, 2009; 57: 657
|
| [20] | Schenk T, Thi H N, Gastaldi J, Reinhart G, Cristiglio V, Mangelinck-Noel N, Klein H, Hartwig J, Grushko B, Billia B. J Cryst Growth, 2005; 275: 201
|
| [21] | Zhu J, Wang T M, Chen Z N, Xu J J, Xie H L, Xiao T Q, Li T J. In: Ludwig A ed., IOP Conf Ser: Mater Sci Eng, 2012; 33: paper No.012039
|
| [22] | Guo Z, Mi J, Xiong S M, Grant P S. J Comput Phys, 2014; 257: 278
|
| [23] | Rack A, Weitkamp T, Riotte M, Grigoriev D, Rack T, Helfen L, Baumbach T, Dietsch R, Holz T, Kramer M, Siewert F, Meduna M, Cloetens P, Ziegler E. J Synchrotron Radiat, 2010; 17: 496
|
| [24] | Puncreobutr C, Phillion A B, Fife J L, Lee P D. Acta Mater, 2014; 64: 316
|
| [25] | Nielsen O, Arnberg L, Mo A, Thevik H. Metall Mater Trans, 1999; 30A: 2455
|
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