激光立体成形中熔池凝固微观组织的元胞自动机模拟

魏雷; 林鑫; 王猛; 黄卫东

doi:10.7498/aps.64.018103

摘要

本文通过采用自适应网格技术, 将激光立体成形的宏观温度场模型和凝固微观组织的低网格各向异性元胞自动机模型(cellular automaton, CA)结合, 建立了适用于激光立体成形的集成数值模型. 模型包括基材的温度场分布, 熔池形貌和熔凝过程的凝固微观组织. 模拟了激光扫描速度为15 mm/s时, 激光作用在Fe-C单晶基材上形成熔池的形状以及熔池内凝固微观组织. 计算结果揭示了熔池内固液界面从平界面失稳到胞\枝晶的非稳态凝固过程, 并得到了平界面组织形成的白亮带. 白亮带上方形成了外延生长的枝晶列.

关键词:

Abstract

A two-dimensional multiscale model is presented for simulating laser melting process, which is the same as laser solid forming (LSF) without the addition of metallic powders into the molten pool. The metallurgical process in molten pool is simulated, including the temperature distribution, the pool shape, and the solidification microstructure. The shape of the molten pool and the microstructure in Fe-C single crystal substrate at a laser scanning speed of 15 mm/s is simulated. Results reveal the instability from planar interface to cell\ dendrite morphologies in the molten pool. At the bottom of the molten pool, the growth morphology is planar interface, which is also called bonding zone. Epitaxial dendrite arrays can be seen to grow above the bonding zone.

Keywords:

作者及机构信息

1.
西北工业大学机电学院, 西安 710072;

2.
西北工业大学凝固技术国家重点实验室, 西安 710072

基金项目: 中国博士后科学基金(批准号: 2013M540771)、国家自然科学基金(批准号: 51271213), 国家重点基础研究发展计划(973) (批准号: 2011CB610402)、国家高技术研究发展计划(863计划) (批准号: 2013AA031103)和高等学校博士学科点专项科研基金(批准号: 20116102110016)资助的课题.

Authors and contacts

1.
School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;

2.
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China

Funds: Project supported by the China Postdoctoral Science Foundation (Drant No. 2013M540771), the National Natural Science Foundation of China (Grant No. 51271213), the National Basic Research Program of China (Grant No. 2011CB610402), the National High Technology Research and Development Program of China (Grant No. 2013AA031103), and the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20116102110016).

参考文献

[1]	Keicher D M, Smugeresk y J E, Romero J A, Griffith M L, Harwell L D 1997 SPIE 2293 91
[2]	Keicher D M, Smugeresky J E 1997 JOM 49 51
[3]	Magee J, Watkins K G, Steen W M 1998 Journal of Laser Application 10 235240
[4]	Lin X, Yue T M, Yang H O, Huang W D 2006 Acta Mater. 54 1901
[5]	Gremaud M, Wagmiere J D, Zryd A, Kurz W 1996 Surface Engineering 12 251
[6]	Gaumann M, Henry S, Cleton F, Wagniere J D, Kurz W 1999 Materials Science & Engineering A 271A 232
[7]	Tseng A A, Lee M, Zhao 1998 Proceeding s of the Third Pacific Rim International Conference on Advanced Materials and Processing, Honolulu, Hawaii, USA, July 12-16, 1998 p1611-1618
[8]	Li Y M, Huang W D, Feng L P, Chen J 1999 Acta Metall. Sinica (English Letters) 12 1025
[9]	Li Y M 2001 Ph. D. Dissertation (Xi'an: Northwestern Polytechnical University) (in Chinese) [李延民 2001 博士学位论文(西安: 西北工业大学)]
[10]	Wang L, Felicelli S 2006 Mater. Sci. Eng. A 435–436 625
[11]	Peyre P, Aubry P, Fabbro R, Neveu R, Longuet A 2008 J. Phys. D: Appl. Phys. 41 025403
[12]	Brown S, Song H 1992 J. Eng. Ind. Trans. ASME 114 441
[13]	Fallah V, Alimardani M, Corbin SF, Khajepour A 2011 Comput. Mater. Sci. 50 2124
[14]	Fallah V, Amoorezaei M, Provatas N, Corbin S F, Khajepour A 2012 Acta Mater. 60 1633
[15]	Yin H, Felicelli S D 2010 Acta Mater. 58 1455
[16]	Nastac L 1999 Acta Mater. 47 4253
[17]	Sanchez LB, Stefanescu D M 2004 Metall. Mater. Trans. 35 A2471
[18]	Zhu M F, Stefanescu D M 2007 Acta Mater. 55 1741
[19]	Wei L, Lin X, Wang M, Huang W D 2011 Appl. Phys. A 103 123
[20]	Wei L, Lin X, Wang M, Huang W D 2012 Comput. Mater. Sci. 54 66.
[21]	Wei L, Lin X, Wang M, Huang WD 2012 Physica B 407 2471
[22]	Wei L, Lin X, Wang M, Huang W D 2012 Acta Phys. Sin. 61 098104 (in Chinese) [魏雷, 林鑫, 王猛, 黄卫东 2012 物理学报 61 098104]
[23]	Zhang Y P, Lin X, Wei L 2012 Acta Phys. Sin. 61 228106 (in Chinese) [张云鹏, 林鑫, 魏雷等 2012 物理学报 61 228106]
[24]	Wang L L, Wang Z J, Lin X, Wang M, Huang W D 2012 Chin. Phys. B 21 066801
[25]	Wang Z J, Wang J C, Yang G C 2010 Chin. Phys. B 19 017305
[26]	Gueyffier D, Li J, Nadim A, Scardovelli R, Zaleski S 1999 J. Comput. Phys. 152 423
[27]	Zhang K, Wang S, Liu W, Shang X 2014 Materials & Design 55 104

施引文献

[1]	Keicher D M, Smugeresk y J E, Romero J A, Griffith M L, Harwell L D 1997 SPIE 2293 91
[2]	Keicher D M, Smugeresky J E 1997 JOM 49 51
[3]	Magee J, Watkins K G, Steen W M 1998 Journal of Laser Application 10 235240
[4]	Lin X, Yue T M, Yang H O, Huang W D 2006 Acta Mater. 54 1901
[5]	Gremaud M, Wagmiere J D, Zryd A, Kurz W 1996 Surface Engineering 12 251
[6]	Gaumann M, Henry S, Cleton F, Wagniere J D, Kurz W 1999 Materials Science & Engineering A 271A 232
[7]	Tseng A A, Lee M, Zhao 1998 Proceeding s of the Third Pacific Rim International Conference on Advanced Materials and Processing, Honolulu, Hawaii, USA, July 12-16, 1998 p1611-1618
[8]	Li Y M, Huang W D, Feng L P, Chen J 1999 Acta Metall. Sinica (English Letters) 12 1025
[9]	Li Y M 2001 Ph. D. Dissertation (Xi'an: Northwestern Polytechnical University) (in Chinese) [李延民 2001 博士学位论文(西安: 西北工业大学)]
[10]	Wang L, Felicelli S 2006 Mater. Sci. Eng. A 435–436 625
[11]	Peyre P, Aubry P, Fabbro R, Neveu R, Longuet A 2008 J. Phys. D: Appl. Phys. 41 025403
[12]	Brown S, Song H 1992 J. Eng. Ind. Trans. ASME 114 441
[13]	Fallah V, Alimardani M, Corbin SF, Khajepour A 2011 Comput. Mater. Sci. 50 2124
[14]	Fallah V, Amoorezaei M, Provatas N, Corbin S F, Khajepour A 2012 Acta Mater. 60 1633
[15]	Yin H, Felicelli S D 2010 Acta Mater. 58 1455
[16]	Nastac L 1999 Acta Mater. 47 4253
[17]	Sanchez LB, Stefanescu D M 2004 Metall. Mater. Trans. 35 A2471
[18]	Zhu M F, Stefanescu D M 2007 Acta Mater. 55 1741
[19]	Wei L, Lin X, Wang M, Huang W D 2011 Appl. Phys. A 103 123
[20]	Wei L, Lin X, Wang M, Huang W D 2012 Comput. Mater. Sci. 54 66.
[21]	Wei L, Lin X, Wang M, Huang WD 2012 Physica B 407 2471
[22]	Wei L, Lin X, Wang M, Huang W D 2012 Acta Phys. Sin. 61 098104 (in Chinese) [魏雷, 林鑫, 王猛, 黄卫东 2012 物理学报 61 098104]
[23]	Zhang Y P, Lin X, Wei L 2012 Acta Phys. Sin. 61 228106 (in Chinese) [张云鹏, 林鑫, 魏雷等 2012 物理学报 61 228106]
[24]	Wang L L, Wang Z J, Lin X, Wang M, Huang W D 2012 Chin. Phys. B 21 066801
[25]	Wang Z J, Wang J C, Yang G C 2010 Chin. Phys. B 19 017305
[26]	Gueyffier D, Li J, Nadim A, Scardovelli R, Zaleski S 1999 J. Comput. Phys. 152 423
[27]	Zhang K, Wang S, Liu W, Shang X 2014 Materials & Design 55 104

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