List of Publications

Journals

• Yan L., Y. Liu, E.J. Liu. Wear behaviour of martensitic NiTi shape memory alloy under ball-on-disk sliding tests, Tribology International (2013) accepted.

• Yang S.Y., Y. Liu, C.P. Wang, Z. Shi, X.J. Liu. The mechanism clarification of Ni-Mn-Fe-Ga alloys with excellent and stable functional properties, Journal of Alloys and Compounds 560 (2013) 84-91.

• Wang B.M., Y. Liu. Exchange bias and inverse magnetocaloric effect in Co and Mn co-doped Ni2MnGa shape memory alloy, Metals 3(1) (2013) 69-76. Open access.

• Zhao T., Y. Li, Y. Liu, X. Zhao. Nano-hardness, wear resistance and pseudoelasticity of hafnium implanted NiTi shape memory alloy, Journal of the Mechanical Behavior of Biomedical Materials 13 (2012) 174–184.

• Yang S.Y., Y. Liu, C.P. Wang, X.J. Liu. Martensite stabilization and thermal cycling stability of two-phase NiMnGa-based high-temperature shape memory alloys, Acta Materialia 60/10 (2012) 4255–4267.

• Wang B.M., Y. Liu, B. Xia, P. Ren and L. Wang. Large exchange bias obtainable through zero-field cooling from an unmagnetized state in Ni-Mn-Sn Journal of Applied Physics 111 (2012) 043912.

• Wang B.M., Y. Liu, P. Ren, B. Xia, K.B. Ruan, J.B. Yi, J. Ding, X.G. Li, and L. Wang. Large exchange bias after zero-field cooling from an unmagnetized state, Physical Review Letters 106 (2011) 077203. Supplementary Information.

• Zarinejad M., Y. Liu, T. Liu, T. White, P. Yang, Q. Chen. Evolution of Local Atomic Structure in a Melt-Spun Ni₂₅Ti₅₀Cu₂₅ Shape Memory Alloy during Crystallization, Philosophical Magazine 91/3 (2011) 404–420.

• Tong Y.X., Y. Liu. Effect of precipitation on two-way shape memory effect of melt-spun Ti50Ni25Cu25 ribbon, Materials Chemistry and Physics 120 (2010) 221-224.

• Wang, B.M., P. Ren, Y. Liu, L. Wang. Enhanced magnetoresistance through magnetic-field-induced phase transition in Ni2MnGa co-doped with Co and Mn, Journal of Magnetism and Magnetic Materials 322 (2010) 715-717. 

• Wang B.M., L. Wang, Y. Liu, B. C. Zhao, Y. Zhao, Y. Yang, H. Zhang. Strong thermal-history-dependent magnetoresistance behavior in Ni_49.5Mn_34.5In_16, Journal of Applied Physics 106 (2009) 063909.

• Zarinejad M., Y. Liu, Y.X. Tong. Transformation temperature changes due to second phase precipitation in NiTi-based shape memory alloys, Intermetallics 17 (2009) 914–919.

• Ma Y.Q., S.Y. Yang, Y. Liu, X.J. Liu. The ductility and shape memory properties of Ni-Mn-Co-Ga high-temperature shape-memory alloys, Acta Materialia 57/11 (2009) 3232-3241.

• Wang B.M., L. Wang, Y. Liu, B.C. Zhao. A second-order ferromagnetic transition in the martensitic state of Ni_49.5Mn_32.5Cu₄Sn₁₄: A critical behavior study, Journal of Applied Physics 105 (2009) 023913.

• Tong Y.X., Y. Liu. Effect of annealing on martensitic transformation and superelasticity of Ti50Ni25Cu25 ribbons, Rare Metal Materials and Engineering 37 (S3) (2008) 600-603.

• Wang B.M., Y. Liu, L. Wang, S.L. Huang, Y. Zhao, Y. Yang, H. Zhang. Exchange bias and its training effect in the martensitic state of bulk polycrystalline Ni_49.5Mn_34.5In₁₆, Journal of Applied Physics 104 (2008) 043916.

• Zarinejad M., Y. Liu, T. White. The crystal chemistry of martensite in NiTiHf shape memory alloys, Intermetallics 16 (2008) 876–883.

• Wada K., Y. Liu. On the two-way shape memory behavior in NiTi alloy - An experimental analysis, Acta Materialia 56 (2008) 3266-3277.

• Zarinejad M., Y. Liu. Dependence of Transformation Temperatures of NiTi-based Shape Memory Alloys on the Number and Concentration of Valence Electrons, Advanced Functional Materials 18/18 (2008) 2789-2794.

• Tong Y.X., Y. Liu, Z.L. Xie, M. Zarinejad. Effect of precipitation on the shape memory effect of Ti50Ni25Cu25 melt-spun ribbon, Acta Materialia 56/8 (2008) 1721-1732.

• Tong Y.X., Y. Liu, J.M. Miao. Phase transformation in NiTiHf shape memory alloy thin films, Thin Solid Films 516 (2008) 5393-5396.

• Wada K., Y. Liu. Thermomechanical training and the shape recovery characteristics of NiTi alloys, Materials Science & Engineering A 481-2 (2008) 166–169.

• Wada K., Y. Liu. Two-way memory effect in NiTi shape memory alloys, Advances in Science and Technology 59 (2008) 77-85.

• Tong Y.X., Y. Liu, Z.L. Xie. Characterization of a rapidly annealed Ti50Ni25Cu25 melt-spun ribbon, Journal of Alloys and Compounds 456 (2008) 170-177.

• Ji G., Z. Zhang, Y. Liu, X.D. Ding, J. Sun, X.B. Ren. Effect of oxidation on detwinning stress and transformation temperature of Ti-50Ni shape memory alloy, Journal of Alloys and Compounds 448 (2008) 171-176.

• Xiong F., Y. Liu. Effect of stress-induced martensitic transformation on the crack tip stress intensity factor in Ni-Mn-Ga shape memory alloy, Acta Materialia 55/16 (2007) 5621-5629.

• Xie Z.L., G.P. Cheng, Y. Liu. Microstructure and texture development in Ti50Ni25Cu25 melt-spun ribbon, Acta Materialia 55/1 (2007) 361-369.

• Li G., Y. Liu. Stress-induced change of magnetization in a Ni-Mn-Ga single crystal under magnetomechanical training, Applied Physics Letters 88, 232504 (2006).

• Xiong F., Y. Liu. Thermomechanical stability of Ni-Mn-Ga single crystal, Materials Science & Engineering A 432/1-2 (2006) 178-183.

• Cheng G.P., Z.L. Xie, Y. Liu. Texture and shape memory property of annealed  Ti50Ni25Cu25 ribbons, Mater. Sci. Eng. A 425/1-2 (2006) 268-271.

• Tong Y.X., Y. Liu. Crystallization behavior of a Ti50Ni25Cu25 melt-spun ribbon, Journal of Alloys and Compounds 449 (2008) 152-155.

• Wada K., Y. Liu. On the mechanisms of two-way memory effect and stress-assisted two-way memory effect in NiTi shape memory alloy, Journal of Alloys and Compounds 449 (2008) 125-128.

• Liu Y., Z.L. Xie. The rational nature of type II twin in NiTi shape memory alloy, invited paper for a special issue of Journal of Intelligent Material Systems and Structures 17/12 , (2006) 1083-90.

• Li G. Y. Liu, B. Ngoi. Electrical Transport and Thermal Properties of Ferromagnetic Shape Memory Alloy Ni49.4Mn30Ga20.6, Journal of Magnetism and Magnetic Materials 303/1 (2006) 261-265.

• Liu Y., Z.L. Xie, Y.X. Tong, C.W. Lim. Properties of rapidly annealed Ti50Ni25Cu25 melt spun ribbon, Journal of Alloys and Compounds 416/1-2 (2006) 188-193.

• Xiong F., Y. Liu and E. Pagounis. Thermally induced fracture of single crystal Ni-Mn-Ga ferromagnetic shape memory alloy, Journal of Alloys and Compounds 415/1-2 (2006) 188-192.

• Cheng G.P., Z.L. Xie, Y. Liu. Transformation characteristics of annealed Ti50Ni25Cu25 melt spun ribbon, Journal of Alloys and Compounds 415/1-2, (2006) 182-187

• Li G., Y. Liu, B. Ngoi. Some aspects of strain-induced change of magnetization in a Ni-Mn-Ga single crystal, Scripta Materialia 53/7 (2005) 829-834.

• Wada K. and Y. Liu. Shape recovery of NiTi shape memory alloy under various pre-strain and constraint conditions, Smart Materials and Structures 14 (2005) S273-S286.

• Wada K. and Y. Liu. Factors affecting the generation of stress-assisted two-way memory effect in NiTi shape memory alloy, Journal of Alloys and Compounds 400/1-2 (2005) 163-170 .

• Tong Y.X., Y. Liu, J.M. Miao, L.C. Zhao. Characterization of a nanocrystalline NiTiHf high temperature shape memory alloy thin film, Scripta Materialia 52/10 (2005) 983-987.

• Xiong F., Y. Liu and E. Pagounis. Fracture mechanism of a Ni-Mn-Ga ferromagnetic shape memory alloy single crystal, Journal of Magnetism and Magnetic Materials 285 (2005) 410-416.

• Huang X. and Y. Liu. Surface morphology of sputtered NiTi-based shape memory alloy thin films, Surface & Coatings Technology 190 (2005) 400-405.

• Liu Y. The work production of shape memory alloy, Smart Materials and Structures 13 (2004) 552-561.

• Xie Z.L. and Y. Liu. HRTEM study of <011> type II twin in shape memory alloy, Phil. Mag. 32/11 (2004) 3497-3507.

• Liu Y. and X. Huang. Substrate-induced stress and transformation characteristics of a deposited NiTiCu thin film, Phil. Mag. 84/19 (2004) 1919-1936.

• Yin Yanling, Shih-Fu Ling and Y. Liu. A dynamic indentation method for characterizing soft incompressible viscoelastic materials, Mater. Sci. Eng. A 379/1-2 (2004) 334-340.

• Liu Y. and X. Huang, Transformation characteristics of sputter deposited SMA thin film, presented at IUMRS-ICAM2003, Transactions of Japan Institute of Metals 29/7 (2004) 2981-2984.

• Liu Y. and Z.L. Xie. Twinning and detwinning of <011> type II twin in shape memory alloy, Acta Materialia 51/18 (2003) 5529-5543.

• Liu Y. and Z.L. Xie. TEM in-situ study of the pre-strained NiTi shape memory alloy – driving force for shape recovery? Mater. Sci. Eng. A 361/1-2 (2003) 185-190.

• Xie Z.L. and Y. Liu. Twinning and detwinning of <011> type II twins in NiTi shape memory alloy, Materials Science Forum 426-432 (2003) 2291-2296.

• Liu Y. Mechanical and Thermomechanical Properties of Ti₅₀Ni₂₅Cu₂₅ melt-spun ribbon, Mater. Sci. Eng. A 354 (2003) 286-291.

• Liu Y. Erratum to “Mechanical and thermomechanical properties of a Ti50Ni25Cu25 melt spun ribbon”, Mater. Sci. Eng. A 369 (2004) 314–316.

• Huang X., Y. Liu, S.F. Ling, H.H. Zhang and W.M. Huang. Effect of SiO₂ buffer layer on properties of sputter-deposited NiTi shape memory alloy thin films, Surface & Coatings Technology, 167/2-3 (2003) 148-153.

• Huang X. and Y. Liu. Substrate-induced stress and the transformation behavior of sputter-deposited NiTi thin films, Mater. Sci. Eng. A 352 (2003) 314-317.

• Liu Y., Y-L Li, and K-T Ramesh. Rate dependence of deformation mechanisms in shape memory alloy, Phil. Mag. A 82 (2002) 2461-2473.

• Liu Y., Y-L Li, Z. L. Xie, and K-T Ramesh. Dynamic deformation of shape memory alloy: evidence of domino detwinning? Phil. Mag. Let. 82 (2002) 511-517.

• Liu Y. Strengthening of virgin martensite through cryogenic deformation, Metall. and Mater. Trans. A 33A (2002) 3576-3578.

• Liu Y. and W. K. Kow. Superelasticity of TiNi₂₅Cu₂₅ Shape Memory Alloy, presented in ICOMAT'02, June 2002, Finland, J. de Physique IV 112 (2003) 885-888.

• Xie Z.L., Y. Liu and E. Stach. In-Situ TEM Study of the Shape Recovery Process in Predeformed NiTi Shape Memory Alloy, presented in ICOMAT'02, June 2002, Finland, J. de Physique IV 112 (2003) 769-772.

• Zheng Q-S and Y. Liu. Prediction of the detwinning anisotropy in textured NiTi shape memory alloy, Phil. Mag. A 82 (2002) 665-683.

• Huang X. and Y. Liu. Effect of Annealing on the Transformation Behavior and Superelasticity of NiTi Shape Memory Alloy, Scripta Materialia, 45/2 (2001) 153-160.

• Liu Y., Z. L. Xie, J. Van Humbeeck, L. Delaey and Y-N Liu. On the deformation of twinned domain in NiTi shape memory alloys, Phil. Mag. A 80 (2000) 1935-1953.

• Van Humbeeck J. and Y. Liu. Shape memory alloys as damping materials, Materials Science Forum 327-328 (2000) pp. 331-338. Invited paper, International Symposium on Shape Memory Materials, Kanazawa, Japan, May, 1999.

• Liu Y., Z. L. Xie, J. Van Humbeeck and L. Delaey. Effect of texture orientation on the martensite deformation of NiTi shape memory alloys, Acta Materialia 47/2 (1999) 645-660.

• Liu Y-N, Y. Liu and Jan Van Humbeeck. Two-way memory effect developed by martensite deformation in NiTi, Acta Materialia, 47/1 (1999) 199-209.

• Liu Y., Y. L. Li, K. T. Ramesh and J. Van Humbeeck. High rate deformation of martensitic NiTi shape memory alloys, Scripta Materialia, 41 (1999) 89-95.

• Liu Y. Z. L. Xie, J. Van Humbeeck and L. Delaey. Deformation of shape memory alloys via twinned domain re-configurations, Mater. Sci. Eng. A 273-275 (1999) 679-684.

• Liu Y., Z. L. Xie and J. Van Humbeeck. Cyclic deformation of NiTi shape memory alloys, Mater. Sci. Eng. A 273-275 (1999) 673-678.

• Liu Y., Z. L. Xie, J. Van Humbeeck and L. Delaey (1999). Some results on the detwinning process in NiTi shape memory alloys, Scripta Materialia 41 1273-1281.

• Liu Y., Z. L. Xie, J. Van Humbeeck and L. Delaey. Asymmetry of stress-strain curves under tension and compression for NiTi SMAs, Acta Materialia 46 (1998) 4325-4338.

• Xie Z. L., Y. Liu and J. Van Humbeeck. Microstructure of NiTi shape memory alloy due to cyclic deformation, Acta Materialia 46 (1998) 1989-2000.

• Liu Y-N, Y. Liu and J. Van Humbeeck. Lüders-like deformation associated with martensite reorientation in NiTi, Scripta Materialia 38 (1998) 1047-1055.

• Liu Y., J. Van Humbeeck, R. Stalmans and L. Delaey. Some aspects of the properties of NiTi shape memory alloy, J. of Alloys and Compounds 247 (1997) 115-121.

• Xie Z. L., J. Van Humbeeck, Y. Liu and L. Delaey. TEM study of Ti₅₀Ni₂₅Cu₂₅ melt spun ribbons. Scripta Materialia 37 (1997) 363-371.

• Liu Y., H. Hänninen and J. Foct. Internal friction of Fe-N martensite at low temperature, Mater. Sci. Eng. A231 (1997) 183-188.

• Liu Y. and J. Van Humbeeck. On the damping behavior of NiTi shape memory alloy, J. de Physique IV (1997) C5-519-524.

• Liu Y., Z. L. Xie, H. Hänninen, J. Van Humbeeck, J. Pietikäinen (1995). Isothermal martensitic transformation as an internal-stress-increasing process, J. de Physique IV C8, pp. 179 - 184.

• Xie Z. L., Y. Liu, H. Hänninen. Stabilization of austenite associated with prior martensitic transformations, J. de Physique IV C8 (1995) 333 - 338.

• Liu, Y. Internal friction associated with dislocation relaxations in virgin martensite, II. Interpretation. Acta Metallurgica et Materialia 42 (1994) 621-630.

• Xie, Z. L., Y. Liu and H. Hänninen. Stabilization of retained austenite due to partial martensitic transformations. Acta Metallurgica et Materialia 42 (1994) 4117-4133.

• Liu, Y. Internal friction associated with dislocation relaxations in virgin martensite, I. Experiments. Acta Metallurgica et Materialia 41 (1993) 3277-3287.

• Liu, Y. Effects of martensite morphology on the aging behavior of virgin martensite. Acta Metallurgica et Materialia 41 (1993) 1587-1593.

• Liu, Y. and J. Pietikäinen. Zig-zag martensite formed at low temperatures. Scripta Metallurgica et Materialia 27 (1992) 887-892.

• Liu Y. and J. Pietikäinen. Influence of martensitic morphology on the behavior of virgin martensite at low temperatures, Scripta Metallurgica et Materialia 25 (1991) 1345-1350.

• Liu Y., K. Ullakko, V. Gavriljuk, V. Nadutov, J. Pietikäinen. Internal friction behavior of Fe-Ni-C alloys during low temperature aging, Materials Science Forum 56-58 (1990) 207-212.

Book Chapters, Monograph

• Liu Y. Some factors affecting the transformation hysteresis in shape memory alloys, Book Chapter in Shape Memory Alloys: Manufacture, Properties and Applications, Ed. HR Chen, Nova Science Publishers, Inc. 2010, ISBN: 978-1-60741-789-7, pp. 361-369.

• Zarinejad M., Y. Liu. Dependence of transformation temperatures of shape memory alloys on the number and concentration of valence electrons, Book Chapter in Shape Memory Alloys: Manufacture, Properties and Applications, Ed. HR Chen, Nova Science Publishers, Inc. 2010, ISBN: 978-1-60741-789-7, pp. 339-360.

• Liu Y. and Z. L. Xie. Detwinning in shape memory alloy, chapter in Progress in Smart Materials and Structures, Nova Science Publishers, Inc., ISBN 1-60021-106-2, pp.29-65, 2007.

• Van Humbeeck J. and Y. Liu. The high damping capacity of shape memory alloys, chapter in Shape Memory Implants, ed. L. Yahia, Springer-Verlag Berlin Heidelberg New York 2000. pp 46 - 60.

• Romu J., Y. Liu, H. Hänninen, Nitrogen alloyed martensitic stainless steels, 108 pages, (1994) 951-22-2135-7, ISSN 0785-1294, Helsinki University of Technology.

Conference Proceedings

• Seow A. K., Y. Liu, W.K. Yeo (2008). Shape Memory Alloy as Actuator to Deflect a Wing Flap, Proceedings of the 49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 7 - 10 April 2008, Schaumburg, IL, USA, MS AIAA 2008-1704.

• Wada K. and Y. Liu (2006). Some factors affecting the shape recovery properties of NiTi SMA, Proceedings of the 14th AIAA/ASME/AHS Adaptive Structures Conference, 1 - 4 May 2006, Newport, Rhode Island, USA, MS AIAA-2006-1969, pp. 1-17.

• Tong Y. X. and Y. Liu (2006). Properties of Ti50Ni25Cu25 melt-spun ribbon, Proceedings of the 47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 1 - 4 May 2006, Newport, Rhode Island, USA, MS AIAA-2006-1769, pp. 1-6.

• Huang X. and Y. Liu (2002) Some factors affecting the properties of sputter deposited NiTi-base shape memory alloy thin films, Smart Materials II, A.R. Wilson, V.V. Varadan, Editors, Proceedings of SPIE, Vol. 4934 (2002) pp. 210-218.

• Liu Y. On the Detwinning Mechanism in Shape Memory Alloys, IUTAM Symposium on Mechanics of Martensitic Phase Transformation in Solids, Ed. Q-P Sun, Kluwer Academic Publishers, Dordrecht, ISBN 1-4020-0741-8, July 2002, pp. 37-44.

• Liu Y. (2001). Detwinning process and its anisotropy in shape memory alloys. In Smart Materials, A.R. Wilson, H. Asanuma, Editors, Proceedings of SPIE Vol. 4234, pp. 82-93.

• Zheng Q-S and Y. Liu (2000). Anisotropy of detwinning process in textured NiTi shape memory alloy. Proceedings of SPIE, Vol. 3992, Smart Structure and Materials 2000: Active Materials: Behavior and Mechanics, Ed. Christopher S. Lynch, pp. 560-571.

• Liu Y. and J. Van Humbeeck (1999). Damping capacity of shape memory alloys, Memory Alloys for New Seismic Isolation and Energy Dissipation Devices, Proceedings of MANSIDE Project Workshop, January 28-29,1999, Rome, Italy, pp. II-59-72.

• Liu Y. and J. Van Humbeeck (1999). Damping of NiTi shape memory alloys under cyclic deformation, CDROM Proc. of the 13th ASCE Engineering Mechanics Conference, June 13^th-16^th, 1999, Baltimore, USA.

• Liu, Y, J. Van Humbeeck, R. Stalmans, L. Delaey (1998). Damping related properties of NiTi shape memory alloy, Proceedings of the 1996 International Conference on Displacive Phase Transformations and their Applications in Materials Engineering, pp. 245-250.

• Liu Y., Z. L. Xie and J. Van Humbeeck (1998). Damping capacity of shape memory alloy, Proc. of the 3rd Annual Conference of the China Association of Science and Technology, Aug. 19-22, 1998, Beijing, China, pp. 207-213.

• Vichev R. G., Y. Liu and J. Van Humbeeck, B. Blanpain, J. P. Celis (1997). Thermally grown oxide films on NiTi shape memory alloys, Proc. 7th European Conference on Applications of Surface and Interface Analysis, Göteborg, Sweden, June 16-20, 1997, pp. 679-682.

• Liu Y., Hänninen H, Pietikäinen J (1993), Internal friction behavior of virgin dislocated martensite , International Conf. on Martensitic Transformations (ICOMAT-92), Monterey, USA, pp. 569-574.

• Liu Y., Ullakko K, Pietikäinen J, (1991). Computer simulation of internal friction peaks associated with interaction between carbon atoms and dislocations in Fe-Ni-C martensite during low temperature aging, 6th Int. Conf. on Mechanical Behavior of Materials, Kyoto, Japan, pp. 123-128.

• Ullakko K, Liu Y., Xie Z.L., (1991), 1990 solar eclipse as "seen" by a torsion pendulum, XXV Annual Conf. of the Finnish Physical Society, Finland, p. 184.

• Liu Y., Ullakko K, Pietikäinen J, (1991), Internal friction associated with interactions between carbon atoms and dislocations at low temperatures, XXV Annual Conf. of the Finnish Physical Society, Finland, p. 105.

• Liu Y., Ullakko K, Pietikäinen J, (1990). Anelastic relaxation of ferrous martensite at low temperatures, Report 7-90, XXIV Annual Conf. of the Finnish Physical Society, Finland, p. 14:9

• Liu Y., Xie Z. L., Ullakko K, Pietikäinen J, (1990). Zig-zag martensite formed at low temperatures during two-step cooling. Report 7-90, XXIV Annual Conf. of the Finnish Physical Society, Finland, p. 14:11.