Directory

Qingyou Han Ph.D.

Professor

Campus: West Lafayette
Contact Form

Department: Mechanical Engineering Technology
Office: Knoy Hall of Technology, Room 129
Phone: 765.494.5866
hanq@purdue.edu
Fax:765.494.6219
Mailing Address:
401 North Grant Street
West Lafeyette, IN 47907-2021

Biography:

Education

Ph.D., Materials Science, Oxford University, 1994

M S., Metallurgy, Beijing University of Science and Technology, 1985

B S., Metallurgy, Wuhan Institute of Technology, 1982 

Professional Experience

2008 - present, FEF Key Professor of Mechanical Engineering Technology, Purdue University

2008 - present, Professor of Materials Engineering (Courtesy Appointment), Purdue University

2007 - 2011,  Associate Professor of Mechanical Engineering Technology, Purdue University

1999 - 2007,  Research Scientist, Metals and Science Division, Oak Ridge National Laboratory

1997 - 1999, Post-Doctorial Research Associate, Metals and Ceramic Division, Oak Ridge National Laboratory

1994 - 1997, Post-Doctorial Research Associate, Oxford University

Publications

Journals

1.     S. Zhang, Q. Han, and Z.K. Liu, “Thermodynamic Investigation of Alkali-Metal-Induced High Temperature Embrittlement in Al-Li Alloys,” Advanced Engineering Materials, 9 (2007), No.11, pp.981-986.

2.     S. Zhang, Q. Han, and Z.K. Liu, “Fundamental Understanding of Na-Induced High Temperature Embrittlement in Al-Mg Alloys,” Philosophical Magazine, 2007, vol. 87, no. 1, pp.147-157.

3.      Y. Cui, C. Xu, and Q. Han, “Microstructure Improvement in Weld Metal Using Ultrasonic Vibrations,” Advanced Engineering Materials, 9 (2007), No.3, pp. 161-163.

4.      H. Xu, T.T. Meek, and Q. Han, “Effects of Ultrasonic Field and Vacuum on Degassing of Molten Aluminum Alloy,” Materials Letters, 61 (2007), No. 4-5, pp. 1246-1250.

5.      Y. Cui, C.L. Xu, and Q. Han, “A Method of Eliminating the Unmixed Zone in AL-6XN Alloy Welds,” Scripta Materialia., 2006, vol.55, No.11, pp. 975-978.

6.      Q. Han, “Motion of Bubbles in the Mushy Zone,” Scripta Materialia., 2006, vol.55, No.10, pp. 871-874.

7.     S.J. Zhang, Q. Han, and Z.K. Liu, “Thermodynamic Modeling of the Al-Mg-Na System,” Journal of Alloys and Compounds, 2006, vol. 419, pp. 91-97.

8.      H. Xu, D.L. Xu, S. Zhang, and Q. Han, “Effect of the Alloy Composition on the Grain Refinement of Aluminum Alloys,” Scripta Materialia., 2006, vol. 54, n12, pp. 2191-2196.

9.      C. Xu, Z. Jia, D. Wu, Q. Han, and T.T. Meek, “Fabrication of nylon-6/Carbon Nanotube Composites,” Journal of Electronic Materials, 2006, Vol. 35, No. 5, p.954-957.

10.  C. Xu, J. Chen, Y. Cui, Q. Han, H. Coo, K. Liaw, and D. Wu, “Influence of the Surface Treatment on the Deposition of Platinum Nanoparticles on the Carbon Nanotubes,” Advanced Engineering Materials, 2006, Vol. 8, No.1-2, pp.73-77.

11.  X. Jian, T.T. Meek, and Q. Han, “Refinement of Eutectic Silicon Phase of Aluminum A356 Alloy Using High-Intensity Ultrasonic Vibration,” Scripta Materialia., 2006, vol. 54, n5, pp. 893-896.

12.  S.J. Zhang, C. Brubaker, C. Jiang, M. Yang, Y. Zhong, Q. Han, and Z.K. Liu, “A Combined First-Principles Calculation and Thermodynamic Modeling of the F-K-Na System,” Materials Science and Engineering, A418 (2006), pp. 161-171.

13.  P.E. King, B.M. Golchert, T. Li, M. Hassan, and Q. Han, “Energy Efficient Operation of Aluminum Furnaces,” Aluminum World, Issue 9, 2006.

14.  Y. Cui, C.L. Xu, Q. Han, H. Choo, and P.K. Liaw, “Formation of Dendritic Nanotubes under an Electric Field,” Advanced Engineering Materials, vol. 7, No.9, 2005, pp.827-829.

15.  Q. Han, M.I. Hassan, S. Viswanathan, K. Saito, and S.K. Das, “The Reheating-Cooling Method: A Technique for Measuring Mechanical Properties in the Nonequilibrium Mushy Zones of Alloys,” Metall Mater Trans 36A, 2005, pp. 2073-2080.

16.  Q. Han, and H. Xu, “Fluidity of Alloys under High Pressure Die Casting Conditions,” Scripta Materialia., 2005, vol. 53, pp. 7-10.

17.  X. Jian, H. Xu., T.T. Meek, and Q. Han, “Effect of Power Ultrasound on Solidification of Aluminum A356 Alloy,” Materials Letters, vol. 59, issues 2-3, 2005, pp. 190-193.

18.  Q. Han, B.K. Kad, and S. Viswanathan, “The Design Perspective of Magnesium Die Casting Alloys,” Philosophical Magazine, vol. 84, issue 36, 2004, pp. 3843-60.

19.  Q. Han, and S. Viswanathan, “The use of thermodynamic simulation for the selection of hypoeutectic aluminum-silicon alloys for semi-solid metal processing,” Materials Science and Engineering A, v 364, n 1-2, Jan 15, 2004, pp. 48-54.

20.  Cailu Xu, Gongwei Wu, Zheng Liu, Dehai Wu, Thomas T. Meek, Qingyou Han, Preparation of copper nanoparticles on carbon nanotubes by electroless plating method, Materials Research Bulletin, 39 (2004), pp. 1499-1505.

21.  H. Xu, X. Jian, T.T. Meek, and Q. Han, “Degassing of Molten Aluminum A356 Alloy Using Ultrasonic Vibration,” Materials Letters, v 58/29, 2004, pp. 3668-3672.

22.  Q. Han, J. Zeh, E. Hatfield, V.K. Sikka, “Dross formation during remelting of aluminum 5182 remelt secondary ingot (RSI),” Materials Science and Engineering A, v 363, n 1-2, Dec 20, 2003, pp. 9-14.

23.  Q. Han, A.J. Duncan, and S. Viswanathan, “Permeability Measurements of the Flow of Interdendritic Liquid in Equiaxed Aluminum-Silicon Alloys,” Metall. Mater. Trans., 34B (2003), pp. 25-28.

24.  Q. Han, and S. Viswanathan, “Analysis of the Mechanism of Die Soldering in Aluminum Die Casting,” Metall. Mater. Trans., 34A (2003), pp. 139-46.

25.  Q. Han, and S. Viswanathan, “Hydrogen Evolution during Directional Solidification and Its Effect on Porosity Formation in Aluminum Alloys,” Metall. Mater. Trans., 33A (2002), pp.2067-2072.

26.  Q. Han, S. Viswanathan, D.L. Spainhower, and S.K. Das, “The Nature of Surface Cracking in DC Cast Aluminum Alloy Ingots,” Metall. Mater. Trans., 32A (2001), pp.2209-11.

27.  A.J. Duncan, Q. Han and S. Viswanathan: “Measurement of Liquid Permeability in the Mushy Zones of Aluminum-Copper Alloys,” Metall. Mater. Trans. 30B (1999), pp. 745-750

28.  X. Wan, Q. Han and J.D. Hunt: “A Diffusion Solution for the Melting/Dissolution of a Solid at Constant Temperature and Its Use for Measuring the Diffusion Coefficient in Liquids,” Metall. Mater. Trans. 29A (1998), pp. 751-755.

29.  Q. Han: “Interaction of Particles with a Freezing Front,” (Invited) “Current Topics in Crystal Growth Research” 4(1998), pp. 147-154.

30.  Q. Han, H. Hu and X. Zhong: “Models for the isothermal Coarsening of the Secondary Dendrite arms in Multicomponent Alloys,” Metall Trans, 28B (1997), pp. 1185-1187.

31.  Q. Han and A. Hellawell: “Primary Particle Melting Rates and Equiaxed Grain Nucleation,” Metall Trans. 28B (1997), pp.169-173.

32.  X. Wan, Q. Han, and J.D. Hunt: “Experimental Studies on the Transition from Regular to Irregular Dendritic Growth,” Acta Metall Mater. 45 (1997), pp. 3975-3979.

33.  J.D. Hunt, Q. Han and X. Wan: “Growth of a Cellular/Dendritic Array,” (invited paper), J. Mater. Sci. Technol., 13 (1997) 161-172.

34.  Q. Han and J.D. Hunt: “Numerical Modeling of the Growth of a Cellular/Dendritic Array in Multi-component Alloys,” Matls Sci and Enging, A238 (1997), pp.192-195.

35.  Q. Han and J.D. Hunt: “Behavior of Particles near a Freezing Front,” Materials Review (Chinese), 10 (1996), pp.101-105.

36.  Q. Han, and J.D. Hunt: “On Particle Pushing During Solidification,” Acta Met. Sinica, 32 (1996) No.4, pp.1-6.

37.  X. Wan and Q. Han: “Theory of Array Growth of Cells/Dendrites,” Materials Review (Chinese), 10 (1996), pp.31-35.

38.  Q. Han, and J.D. Hunt: “Particle Pushing: The Critical Flow Speed Required to Put Particles Into Motion During Fluid Flow,” J. Crystal Growth, 152 (1995), pp. 221-227.

39.  Q. Han, and J.D. Hunt: “Redistribution of Particles during Solidification,” (Invited) ISIJ International (Special Issue on Recent Advances in Solidification), 35 (1995), pp. 693-699.

40.  Q. Han: “The Reasons for China’s Science & Technology Falling Behind the West in Modern Times,” Studies in Dialectics of Nature(Philosophy of Nature, Science and Technology, Science, Technology and Society)(Chinese), 11 (1995), No. 11, pp.9-14.

41.  Q. Han, and J.D. Hunt: “Particle Pushing: The Concentration of Particles near a Solid Interface During Fluid Flow,” J. Crystal Growth, 140 (1994), pp. 398-405.

42.  Q. Han, and J.D. Hunt: “Particle Pushing: The Attachment of Particles to the Solid-Liquid Interface During Fluid Flow,” J. Crystal Growth, 140 (1994), pp. 406-413.

43.  Q. Han, J.P. Lindsay, and J.D. Hunt: “The Effect of Fluid Flow on Particle Pushing,” Cast Metals, 6 (1994), pp. 237-.

44.  Q. Han: “The Phenomena of Particle Pushing and Its Mechanism,” Materials Review(Chinese), 8 (1994), pp. 91-96.

45.  Q. Han, and J.D. Hunt: “Particle Pushing: The Distribution of Particles in Liquid Near a Solid Surface,” Matls. Sci. and Enging, A173 (1993) pp.221-225.

46.  Q. Han, C. Zen, and H. Hu: “The Effects of Rare Earth Elements on the Properties and the Structure of Cast ZA-27 Alloy,” J.BUIST (Chinese), 14 (1992), No.1, pp.42-48.

47.  Q. Han, and H. Hu: “An Experimental Investigation into the Modification of the Corrosion Resistance of the ZA-27 Alloy with Rare Earth Elements,” J. Chinese Rare Earth, 10 (1992), No.3, pp.243-245.

48.  Q. Han, and H. Hu: “A Parameter for Evaluating the Ability of Solute Elements on Grain Refinement in Aluminium Alloy,” Cast Metals, 2, (1989) No.3, pp. 123-126.

49.  Y. Li, Q. Han, and X. Zhong: “The Magnetic Permeability of High Mn Cast Iron,” Foundry (Chinese), 1990, No.6, pp. 5-8.

50.  Q. Han: “A Mathematical Model for the Fluidity of Alloys,” J. BUIST(Chinese), 11(1989), No.4, pp.312-317.

51.  X. Zhong, and Q. Han: “Experimental Investigation Into the Possibility of Eliminating Annealing for Some Cast Iron Parts,” Foundry(Chinese), 1988, No.8, pp.22-24.

52.  X. Zhong. Q. Han, and W. Zhong: “The Influence of Macro-structure on the deformation of Gray Cast Iron,” Modern Casting (Chinese), 1988, No.1, pp.2-6.

53.  Q. Han, H. Hu, and X. Zhong: “The Effect of Ce on the Solidification Structure of Low Sulfur 16Mn Steel,” Acta Met. Sinica, 23 (1987), No.3, pp.176-181.

54.  Q. Han, H. Hu, and X. Zhong: “The Mathematical Models for the Isothermal Coarsening of Secondary Dendrite Arms,” Materials Science Progress (Chinese), 1 (1987), pp.33-39.

55.  Q. Han, and H. Hu: “The Effect of Solute Content on the Secondary Dendrite Arm Spacings for Multi-component Alloys,” J. BUIST(Chinese), 7 (1985), No.1, pp.1-11.

Refereed Conference Proceedings

1.      Q. Han, H. Xu, T.T. Meek, P. Ried, and P. Olson, “An Accelerated Method for Soldering Testing, “ NADCA Transactions 2007, paper T07-041.

2.      Q. Han, R. Dinwiddie, P. Sklad et al, “Comparison of Lost Foam Casting of AM60B Alloy and A356 Alloy, “ AFS Transactions 2007, Paper 07-147.

3.      Q. Han, “The Use of Power Ultrasound for Material Processing,” Materials Processing under the Influence of External Fields,” eds. Q. Han, G. Ludtka, and Q. Zhai, (Warrendale, PA: The Minerals, Metals & Materials Society, 2007), pp. 97-106.

4.      Q. Liu, Y Gao, F. Qi, Q. Zhai, and Q. Han, “Influence of Power Ultrasonic on Solidification Structure and Segregation of 1Cr18Ni9Ti Stainless Steel,” Materials Processing under the Influence of External Fields,” eds. Q. Han, G. Ludtka, and Q. Zhai, (Warrendale, PA: The Minerals, Metals & Materials Society, 2007), pp. 107-112.

5.      H. Xu, T.T. Meek, Q. Zhai, and Q. Han, “Degassing of Molten Aluminum Using Ultrasonic Vibrations,” Materials Processing under the Influence of External Fields,” eds. Q. Han, G. Ludtka, and Q. Zhai, (Warrendale, PA: The Minerals, Metals & Materials Society, 2007), pp. 123-132.

6.      Q. Han, R. Dinwiddie, P. Sklad, K. Currie, F. Vondra, M. Abdelrahman, G.V. Walford, D. Nolan, and T. Nedkova, “Lost Foam Casting of Magnesium Alloys,” Magnesium Technology 2007, eds. R.S. Beals, M.O. Pekguleryuz, A. Lou, and N.R. Needlameggham, (Warrendale, PA: The Minerals, Metals & Materials Society, 2007), pp. 115-120.

7.      S.J. Zhang, Q. Han, and Z.K. Liu, “Thermodynamic Investigation of Na-Induced Embrittlement in Mg-Li Alloys,” Symposium GG: Multiscale Modeling of Materials, MRS 2006 Fall Meeting, Boston, MA, USA, November 27-30, 2006.

8.      X. Jian, T.T. Meek, T. Geer, and Q. Han, “Effect of Power Ultrasound on Grain Refinement of Magnesium AM60B Alloy” Magnesium Technology 2006,, pp. 103-107.

9.      J. Clark III, A. Thekdi, S. Ninqileri, Q. Han, “Reconsideration of Natural-Gas Immersion Burners to Melt Recycled Aluminum,” Materials Science and Technology, Vol.3, Materials Science and Technology 2005 – Proceedings of the Conference, p. 3-9.

10.  A.L. Bowles, Q, Han, and J.A. Horton, “Castability of Magnesium Alloys,” Magnesium Technology 2005, pp. 99-104.

11.  H. Xu, T.T. Meek, and Q. Han, “Ultrasonic Degassing in Aluminum Alloys,” Materials Science and Technology, V1, Materials Science and Technology 2005-Proceedings of the Conference, Pittsburgh, PA, USA, 2005, pp.3-11.

12.  X. Jian, C. Xu, T.T. Meek, and Q. Han, “The Effect of Ultrasonic Vibration on the Solidification Structure of A356 Alloy,” AFS Transactions, 2005, Paper No. 05-085.

13.  Q. Han, “An Experimental Die for Testing the Castability of Die Casting Alloys,” NADCA Transaction, 2005, Paper No. 05-087.

14.  M. Du, Q. Han, and R. Peterson, “Detection of Water Content in Aluminum Scrap with a Fast Neutron Source (Cf-252)”, Light Metals 2005, ed. H. Kvande, (Warrendale, PA: The Minerals, Metals & Materials Society, 2005), pp. 855-859.

15.  B.M. Golchert, C.Q. Chou, A. Quenette, Q. Han, P.E. King, “Combustion Space Modeling of An Aluminum Furnace,” Light Metals 2005, ed. H. Kvande, (Warrendale, PA: The Minerals, Metals & Materials Society, 2005), pp. 887-892.

16.  P.E. King, M.C. Hayes, T. Li, Q. Han, M. Hassan, and B.M. Golchert, “Design and Operation of An Experimental Reverberatory Aluminum Furnace,” Light Metals 2005, ed. H. Kvande, (Warrendale, PA: The Minerals, Metals & Materials Society, 2005), pp. 899-904.

17.  H. Xu, X. Jian, T.T. Meek, and Q. Han, “Ultrasonic Degassing of Molten Aluminum under Reduced Pressure,” Light Metals 2005, ed. H. Kvande, (Warrendale, PA: The Minerals, Metals & Materials Society, 2005), pp. 915-919.

18.  Z. Long, Q. Han, S. Viswanathan, S. Ningileri, S.K. Das, K. Kuwana, M. Hassan, M. Khraisheh, A. Sabau, and K. Saito, “Integrated 3D Model to Simulate Solidification and Predict Hot Cracking during DC Casting of Aluminum Alloys,” Light Metals 2005, ed. H. Kvande, (Warrendale, PA: The Minerals, Metals & Materials Society, 2005), pp. 1057-1062.

22.  Q. Han, R.D. Peterson, and J. Zeh, “Some of the Factors that Affect Dross Formation in Aluminum 5182 RSI,” Light Metals 2004, ed. A.T. Tabereaux, (Warrendale, PA: The Minerals, Metals & Materials Society, 2004), pp. 163-168.

23.  Q. Han, M.I. Hassan, S. Viswanathan, K.Sato, and S.K. Das, “An Experimental Method for Determining Mechanical Properties in the Non-Equilibrium Mushy Zones of Alloys,” Solidification of Aluminum Alloys, eds. M.G. Chu, D.A. Granger, and Q. Han, (Warrendale, PA: The Minerals, Metals & Materials Society, 2004), pp. 211-220.

24.  X. Jian, Q. Han, H. Xu, and T.T. Meek, “Solidification of Aluminum Alloy A356 Under Ultrasonic Vibration”, Solidification of Aluminum Alloys, eds. M.G. Chu, D.A. Granger, and Q. Han, (Warrendale, PA: The Minerals, Metals & Materials Society, 2004), pp.73-79.

25.  H. Xu, X. Jian, T.T. Meek, Q. Han, “Investigation of Ultrasonic Degassing in Molten Aluminum A356 Alloy,” Light Metals 2004, ed. A.T. Tabereaux, (Warrendale, PA: The Minerals, Metals & Materials Society, 2004), pp. 731-735.

26.  Q. Han, “Dross Formation in Aluminum-Magnesium Alloy RSI,” LiMat-3^rd International Conference on Light Materials for Transportation Systems, Hawaii, USA, November 2-6, 2003.

27.  X. Jian, H. Xu, T.T. Meek, Q. Han, and S. Viswanathan, “Ultrasonic Solidification of Aluminum A356 Alloy,” LiMat-3^rd International Conference on Light Materials for Transportation Systems, Hawaii, USA, November 2-6, 2003.

28.  H. Xu, X. Jian, T.T. Meek, and Q. Han, “Ultrasonic Degassing in Aluminum A356 Alloy,” LiMat-3^rd International Conference on Light Materials for Transportation Systems, Hawaii, USA, November 2-6, 2003.

29.  T. Li, M. Hassan, K. Kuwana, K. Saito, S. Viswanathan, and Q. Han, “Thermodynamic Analysis of Energy Utilization and Pollutant Formation Control in Secondary Aluminum Melting Furnaces,” Energy Efficient Manufacturing Processes (The MPMD Fourth Global Innovations Symposium), eds, I.E. Anderson, T.G. Marechaux, and C. Cockrill, (Warrendale, PA: The Minerals, Metals & Materials Society, 2003), pp. 43-51.

30.  Q. Han, W.A. Simpson, J.L Zeh, E.A. Kenik, P. Angelini, and V.K.Sikka, “The Effect of Solidification Defect on the Dross Formation During Re-melting of Aluminum 5182 Alloy RSI,” Light Metals 2003, ed. P.N. Crepeau, (Warrendale, PA: The Minerals, Metals & Materials Society, 2003), pp. 773-777.

31.  Q. Han, and S. Viswanathan, “Optimization of Aluminum 357 Alloy for Semi-Solid Metal Casting,” NADCA Transactions, 2002, T02-32.

32.  Q. Han, and S. Viswanathan, “Mechanism of Die Soldering during Aluminum Die Casting,” NADCA Transactions, 2002, T02-034.

33.  S. Viswanathan, C.A. Blue, Q. Han, G. Engleman, and N.B. Dahotre, “High Density Infrared Coatings for Soldering Resistance,” NADCA Transactions, 2002, T02-044.

34.  Q. Han and S. Viswanathan, D.L. Spainhower, and S.K. Das, “Nature and Formation of Surface Cracks in DC Cast Ingots,” Light Metals 2002, ed. W. Scheider, (Warrendale, PA: The Minerals, Metals & Materials Society, 2002), pp. 975-979.

35.  S. Viswanathan, A.S. Sabau, Q. Han, and A.J. Duncan, “Prediction of Microporosity Distributions in Aluminum Alloy Castings,” Proceedings of the Merton C. Flemings Symposium on Solidification and Materials Processing, eds R. Abbaschian, H. Brody, and A. Mortensen, (Warrendale, PA: The Minerals, Metals & Materials Society, 2001), pp.379-384.

36.  Q. Han, E.A. Kenik, R. Agnew, and S. Viswanathan, “Solidification Behavior of Commercial Magnisum Alloys,” Magnesium Technology 2001, ed. J. Hryn, (Warrendale, PA: The Minerals, Metals & Materials Society, 2001), pp.81-86.

37.  E.A. Payzant, S.R. Agnew, Q. Han, and S. Viswanthan, “Mg₁₇Al₁₂ Phase Precipitation Kinetics in Die Casting Alloys AZ91D and AM60B,” Magnesium Technology 2001, ed. J. Hryn, (Warrendale, PA: The Minerals, Metals & Materials Society, 2001), pp. 183-188.

38.  S. R. Agnew, S. Viswanathan, E. A. Payzant, Q. Han, K. C. Liu, and E. A. Kenik, "Tensile and Compressive Creep Behavior of Magnesium Die Casting, Alloys Containing Aluminium," Magnesium Alloys and Their Applications, ed. K.U. Kainer, (Weinbein, Germany: Wiley-VCH Verlag, 2000) pp.687-692.

39.  Q. Han and S. Viswanathan, “Microstructure Prediction in A356 Alloy Castings,” Light Metals 2000, ed. R.D. Peterson, (Warrendale, PA: The Minerals, Metals & Materials Society, 2000), pp. 609-614.

40.  Q. Han, E.A. Kenik, and S. Viswanathan, “Die Soldering in Aluminum Die Casting,” Light Metals 2000, ed. R.D. Peterson, (Warrendale, PA: The Minerals, Metals & Materials Society, 2000), pp. 765-772.

41.  A.J. Duncan, Q. Han and S. Viswanathan: “Liquid Permeability Measurements in Solidifying Aluminum-Copper Alloys,” Fluid Flow Phenomena in Metals Processing, eds. N. El-Kaddah, D.G.C. Robertson, S.T. Johansen and V.R. Voller, (Warrendale, PA: The Minerals, Metals & Materials Society, 1999), pp.525-532.

42.  A.S. Sabau, Q. Han and S. Viswanathan: “Projection Methods for Interdendritic Flows,” Fluid Flow Phenomena in Metals Processing, eds. N. El-Kaddah, D.G.C. Robertson, S.T. Johansen and V.R. Voller, (Warrendale, PA: The Minerals, Metals & Materials Society, 1999), pp.403-411.

43.  S. Viswanathan, A.J. Duncan, S.A. Sabau, Q. Han, W.D. Porter and B.W. Riemer: “Modeling of Solidification and Porosity in Aluminum Alloy Castings,” AFS Transactions, 98-103 (1998), pp. 411-417.

44.  S. Viswanathan, A.S. Sabau, Q. Han and A.J.Duncan: “Modeling of Porosity in Aluminum Alloy Castings,” Proceedings from Materials Solutions Conference ’98 on Aluminum Casting Technology, 1998, pp. 135-138..

45.  S. Viswanathan, A.J. Duncan, A.S. Sabau and Q. Han: “Prediction of Microporosity in Aluminum Alloy Castings,” Modeling of Casting, Welding and Advanced Solidification Processes-VIII, Eds. B.G.Thomas and C. Beckermann, (Warrendale, PA: The Minerals, Metals & Materials Society, 1998), pp. 849-856.

46.  X. Wan, Q. Han, and J.D. Hunt: “Experimental Studies on the Transition from Regular to Irregular Dendritic Growth,” Solidification Processing 1997, eds. J. Beech and H. Jones, (Ranmoor House, Sheffield, England, 1997), pp. 397-400.

47.  Q. Han, X. Wan and J.D. Hunt: “Experimental Investigation on the Spacing of Dendrite Arrays,” TMS Spring Meeting, Anaheim, USA, Feb. 1996.

48.  Q. Han and J.D. Hunt: “Numerical Modeling of the Growth of a Cellular/Dendritic Array in Multi-component Alloys,” MRS Fall Meeting, Boston, USA.,Dec 3-7, 1996.

49.  Q. Han and J.D. Hunt: “Criteria for Particle Pushing,” Proceeding of the Second Young Scientist Congress, (Beijing, China, 1995), pp. 81-85.

50.  J. D. Hunt, Q. Han, and S-Z Lu: “Numerical Modeling of Cellular/Dendritic Array Growth,” Keynote paper at the International Symposia on Advanced Materials and Technology for the 21^st Century, JIM and TMS, Hawaii, USA, Dec.1995.

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