Abstract
Laser micro cladding deposition manufacturing (LμCDM) is a newly developed rapid manufacturing method for metals. The LμCDM technology adopts a novel powder feeding method based on alternating friction and inertia force, and this powder feeding method can effectively improve the accuracy and orientation of the powder injection, resulting in a smaller molten pool size and a higher cooling rate of liquid metal. Therefore, the components fabricated by LμCDM could obtain the finer microstructures and the improved mechanical properties. It is found that the components fabricated by LμCDM are fully dense free of cracks or pores and exhibit columnar prior β grains with a finer acicular α′ phase microstructure. The microhardness (HV0.2) of the thin-wall component is HV 400–HV 500 in the majority part of the cross section and can reach about HV 850 in the top region. The ultimate tensile strength (UTS) and elongation show insignificant dependence on the testing directions of the tensile specimens. The UTS is between 1,002 and 1,100 MPa, and the elongation is between 10.0 % and 14.7 %.
Similar content being viewed by others
References
Zhang K, Liu WJ, Shang XF. Research on the processing experiments of laser metal deposition shaping. Opt Laser Technol. 2007;39(3):549.
Kobryn PA, Moore EH, Semiatin SL. The effect of laser power and traverse speed on microstructure, porosity, and build height in laser deposited Ti-6Al-4V. Scr Mater. 2000;43(4):299.
Huang FX, Jiang ZH, Liu XM, Lian JS, Chen L. Microstructure and properties of thin wall by laser cladding forming. J Mater Process Technol. 2009;209(11):4970.
Liu XT, Lei WB, Li J, Ma Y, Wang WM, Zhang BH, Liu CS, Cui JZ. Laser cladding of high-entropy alloy on H13 steel. Rare Met. 2014;33(6):727.
Milewski JO, Lewis GK, Thoma DJ, Keel GI, Nemec RB, Reinert RA. Directed light fabrication of a solid metal hemisphere using 5-axis powder deposition. J Mater Process Technol. 1998;75(1–3):165.
Lewis GK, Schlienger E. Practical considerations and capabilities for laser assisted direct metal deposition. Mater Des. 2000;21:417.
Wu X, Mei J. Near net shape manufacturing of components using direct laser fabrication technology. J Mater Process Technol. 2003;135:266.
Collins PC. A combinatorial approach to the development of composition microstructure property relationships in titanium alloys using directed laser deposition. Ohio: The Ohio State University; 2004. 20.
Zhang WY, Hou LY. Scientific and technological problems of digitalization of microfluids (part i): concepts, methods and results. Sci Technol Rev. 2005;23(8):4.
Zhang WY, Hou LY. Scientific and technological problems of digitalization of microfluids (part ii): conceptual study of digitalization of matter and integrated digitalization of matter-energy-information. Sci Technol Rev. 2006;24(3):41.
Wang Z, Li J, Hua YX, Zhang Z, Zhang Y, Ke PC. Research progress in production technology of titanium. Chin J Rare Met. 2014;38(5):915.
Yao B, Lin F, Ma XL, Zhang ZP, Wu T. Study on the powder feeding technique during laser micro cladding deposition manufacturing of TC4 powder. Electromaching Mould. 2011;4:57.
Naveed Ahsana M, Pinkerton AJ, Moat RJ, Shackleton J. A comparative study of laser direct metal deposition characteristics using gas and plasma-atomized Ti-6Al-4V powders. Mater Sci Eng A. 2011;528(25–26):7648.
Mok SH, Bi G, Folkes J, Pashby I, Segal J. Deposition of Ti-6Al-4V using a high power diode laser and wire, part II: investigation on the mechanical properties. Surf Coat Technol. 2008;202(19,25):4613.
Baufeld B, Brandl E, Van der Biest O. Wire based additive layer manufacturing: comparison of microstructure and mechanical properties of Ti-6Al-4V components fabricated by laser-beam deposition and shaped metal deposition. J Mater Process Technol. 2011;211(6):1146.
Kumar Swarnakar A, Van der Biest O, Baufeld B. Thermal expansion and lattice parameters of shaped metal deposited Ti-6Al-4V. J Alloys Compd. 2011;509(6,10):2723.
Martina F, Mehnen J, Williams SW, Colegrove P, Wang F. Investigation of the benefits of plasma deposition for the additive layer manufacture of Ti-6Al-4V. J Mater Process Technol. 2012;212(6):1377.
Baufeld B, van der Biest O, Gault R. Additive manufacturing of Ti-6Al-4V components by shaped metal deposition: microstructure and mechanical properties. Mater Des. 2010;31(S1):106.
Chen J, Zhang SY, Xue L, Yang HO, Lin X, Huang WD. Mechanical properties of Ti-6Al-4V alloy by laser rapid forming. Rare Met Mater Eng. 2007;36(3):475.
Acknowledgments
This study was financially supported by the National Natural Science Foundation of China (No. 50975152).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yao, B., Ma, XL., Lin, F. et al. Microstructure and mechanical properties of Ti-6Al-4V components fabricated by laser micro cladding deposition. Rare Met. 34, 445–451 (2015). https://doi.org/10.1007/s12598-015-0461-1
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12598-015-0461-1