Research Terms
(1) Han, K.; Xin, Y.; Walsh, R.P.;
(2) Lu, J.; Walsh, R.P. and Han, K., Low temperature physical properties of a high Mn austenitic steel JK2LB, Cryogenics, 49 (3-4), 133-137 (2009)
(3) Yu-Zhang, K.; Embury, J.D.; Han K and Misra, A., “Transmission electron microscopy investigation of the atomic structure of interfaces in nanoscale Cu-Nb multilayers”, Philos. Mag. A, 88 (17), 2559-2567 (2008)
(4) Mao, P.; Han, K. and Xin, Y., “Thermodynamic assessmant of the Mo-Re binary system”, J. Alloy Compd., 464, 190-196 (2008)
(5) Downey S, Kalu P.N, Han K, “The effect of heat treatment on the microstructure stability of modified 316LN stainless steel”, MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING V 480, (1-2), 96-100, 2008
(6) Bonito-Oliva, A.; Bird, M.D.; Bole, S.T.; Cantrell, K.R.; Gavrilin, A.V.; Luongo, C.A.; Dixon, I.R.; Han, K.; Lu, J.; Miller, G.E.; Noyes. P.D.; Painter, T.A.; Weijers, H.W.; Walsh, R.P. and Zhai, Y., Development of the superconducting outserts for the Series-Connected-Hybrid program at the National High Magnetic Field Laboratory, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Volume: 18 Issue: 2 Pages: 529-535, 2008
(7) Lu J, Han K, Walsh RP, et al, Critical current longitudinal and transverse strain sensitivities of high J(C) Nb3Sn conductors,, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Volume: 18 Issue: 2 Pages: 1014-1017, 2008
(8) Davy CA, Han K, Kalu PN, et al, “Examinations of Cu-Ag composite conductors in sheet forms”, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Volume: 18 Issue: 2 Pages: 560-563, 2008
(9) Cui, B.Z.; Han, K.; Xin Y.; Waryoba D.R. and Mbaruku A.L., Highly textured and twinned Cu films fabricated by pulsed electrodeposition, Acta Mater., 55, 4429-4438 (2007)
(10) Downey ST, Bembridge N, Kalu PN, Kalu, Miller HM, Rohrer GS, Han K, “Grain boundary plane distributions in modified 316 LN steel exposed at elevated and cryogenic temperatures”, JOURNAL OF MATERIALS SCIENCE 42 (23): 9543-9547 (2007)
(11) Shen, T. D., Zhang, X., Han, K., Davy, C. A., Aujla, D., Kalu, P. N., Schwarz, R. B. “Structure and properties of bulk nanostructured alloys synthesized by flux-melting” JOURNAL OF MATERIALS SCIENCE 42 (5): 1638-1648 (2007)
(12) B.Z. Cui, Y. Xin and K. Han, “Structure and transport properties of nanolaminate Cu–Nb composite foils by a simple fabrication route”, Scripta Mater., 56 (2007) 879–882
(13) Jun Lu, Eun Sang Choi, Robert Walsh, Robert Goddard, Ke Han, and John R. Miller, “Characterization of Nb3Sn Type Superconductors for Hybrid Magnets”, IEEE Trans. Appl. Supercond., 17 (2), 2651 (2007).
(14) Zhao, Y.H.; Bingert, J.F.; Liao, X.-Z.; Cui, B.-Z.; Han, K.; Sergueeva, A.V.; Mukherjee, A.K.; Valiev, R.Z.; Langdon, T.G. and Zhu, Y.T., Simultaneously Increasing the Ductility and Strength of Ultra-Fine-Grained Pure Copper, Adv. Mater., 18, 2949–2953 (2006).
(15) B.Z.Cui; K. Han, Garmestani, H.; Schneider-Muntau, H.J., “Structure and magnetic properties of FePt and FePt–Ag nanostructured magnets by cyclic cold rolling”, J. Applied Physics, 99 (8), 08-910 (2006).
(16) B.Z.Cui; K. Han, Li, D.S.; Garmestani, H.; Liu, J.P.; Dempsey, N.M. and Schneider-Muntau, H.J., Magnetic-field-induced Crystallographic Texture Enhancement in Cold-deformed FePt Nanostructured Magnets, J. Applied Physics, 100 (1), 013902 (2006).
(17) Swenson, C.A.; Gavrilin, A.V.; Han, K.; Walsh, R.P.; Schneider-Muntau, H.J.; Rickel, D.G.; Schillig, J.B.; Ammerman, C.N. and Sims, J.R., Performance of 75T Prototype Pulsed Magnet, IEEE Trans. Appl. Supercond., 16 (NO.2, June), 1650-1655 (2006).
(18) Bird, M.D.; Gavrilin, A.V.; Gundlach, S.R.; Han, K.; Swenson, C.A. and Eyssa, Y.M., Design & Testing of a Repetitively Pulsed Magnet for Neuron Scattering, IEEE Trans. Appl. Supercond., 16 (NO.2, June), 1676-1679 (2006)
(19) Xin, Y.; Han, K.; Stampe, P.A. and Kennedy, R.J., The effect of oxygen pressure on the microstructures of Co doped rutile TiO2 thin films grown by pulsed laser deposition, J. Crystal Growth, 290, 459 (2006).
(20) J.P.Chen, K. Han.; Kalu, P.N. and Markiewicz, W.D., Deformation Behavior of Nb3Sn Type Superconductors, IEEE Trans. Appl. Supercond., 15 (2), 3568-3571 (2005).
(21) B. Z. Cui, C. T. Yu, K. Han, J. P. Liu, H. Garmestani, M. J. Pechan, H. J. Schneider-Muntau, “Magnetization Reversal and Nanostructure Refinement in Magnetically Annealed Nd2Fe14B/ α-Fe-type Nanocomposites”, J. Applied Physics 97, (10), 308 (2005).
(22) B.Z.Cui; K. Han, Garmestani, H.; Su, J.H.; Schneider-Muntau, H.J. and Liu, J.P., Enhancement of Exchange Coupling and Hard Magnetic Properties in Nanocomposites by Magnetic Annealing, Acta Mater., 53, 4155-4161 (2005).
(23) S. Cheng, E. Ma, Y. M. Wang, L. Kecskes, K. M. Youssef, C.C. Koch, U. P. Trociewitz and K. Han, “Tensile Properties of in-situ Consolidated Nanocrystalline Cu” Acta Materialia, 53(5), 1521-1533, (2005).
(24) B. Z. Cui, K. Han, Y. Zhang, J. P. Liu, H. Garmestani, S. Liu, and H. J. Schneider-Muntau, “Crystallization, Morphology and Magnetic Properties of Melt-Spun (Nd; Pr; Dy)2(Fe; Co;Mo)14B-a–Fe Nanocomposites”, IEEE Transactions on Magnetics, 40(4), 2867-2870, (2004).
(25) A. Ishmaku and K. Han, “Deformation Induced Nanostructure and Texture in MP35N Alloys”, J. Materials Science, 39 5417 – 5420, (2004).
(26) K. Han, J.R. Sims, C.A.Swanson, H.J. Schneider-Muntau “Reinforcement Materials for High Field Magnets” IEEE Tran. Applied Superconductivity, 14 (2): 1141-1144, (2004).
(27) K. Han, R.P. Walsh, A. Ishmaku, V. Toplosky, and J. D.Embury, “High Strength and High Electrical Conductivity Bulk Cu”, Phil. Mag., 84 (34), 3705-3716, (2004).
(28) K. Han, A.C. Lawson, J.T.Wood, J.D.Embury, R. B. Von Dreele and J. W. Richardson, Jr, “Microstructure and Internal Stresses in Cold-deformed Cu-Ag and Cu-Nb Wires”, Phil. Mag., 84(24), 2579-2593 (2004).
(29) C. A. Swenson, W.S.Marshall, A.V. Gavrilin, K.Han, J. Schillig, Sims JR, Schneider-Muntau HJ, “Progress of the Insert Coil for the US-NHMFL 100T Multi-shot pulse magnet”, Pysica B-Condensed Matter, 346: 561-565, (2004).
(30) C. A. Swenson, W. S. Marshall, E.L. Miller, K.W. Pickard, A.V. Gavrilin, K. Han, H.J. Schneider-Muntau, “Pulse Magnet Development Program at NHMFL, IEEE Tran. Applied Superconductivity, 14 (2): 1233-1236, (2004).
(31) K. Han and K.Yu-zhang, “Transmission electron Microscopy Study of Metallic Multilayers”, Scripta Mater., 50 (6), 781-786 (2004), (Invited Paper).
(32) H.J. Schneider-Muntau, K. Han, N.A. Bednar, C.A. Swenson, R. Walsh “Materials for 100 T Monocoil Magnets”, IEEE Tran. Applied Superconductivity, 14 (2): 1153-1156, (2004).
(33) Y. Leprince-Wang , K. Han , Y. Huang and K. Yu-Zhang “Microstructure in Cu-Nb Microcomposites”, Materials Science and Engineering, 351, 1-2, 214-223 June 2003.
(34) K. Han, A. A. Vasquez, Y. Xin, and P.N.Kalu “ Microstructure and Tensile Properties of Nanostructured Cu-25wt%Ag”, Acta Materiala, 51, 767-780 (2003).
A process for age hardening nickel-based alloys to create desirable properties with reduced energy expenditure. The process introduces isolated atom nucleation sites to accelerate the nucleation rate by approximately 36 times, thereby permitting age hardening to occur in significantly less time and with significantly less energy expenditure.
A single-step Direct-Cast Hardening (DiCH) method for making property-gradient low-carbon steel at a lower cost by saving energy and manpower. An ultra-hard layer is introduced at the surface with free oxygen content before solidification and a specific cooling rate during solidification. Samples subjected to hardness tests after processing showed ultra-high levels (4.2GPa Vickers hardness and 6.3GPa nanoindentation hardness). Ultra-high hardness is achieved by a proper mix of acicular ferrite and ultra-fine lath-structured grains (LSG) and a specific cooling rate, which produces refined microstructure and high surface hardness.
