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Microstructures and properties of direct laser sintered tungsten carbide (WC) particle reinforced Cu matrix composites with RE–Si–Fe addition: A comparative study

Published online by Cambridge University Press:  31 January 2011

Dongdong Gu  and
Yifu Shen
Dongdong Gu*
Affiliation:
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, People’s Republic of China; and Fraunhofer Institute for Laser Technology ILT/Chair for Laser Technology LLT, RWTH, D-52074, Aachen, Germany
Yifu Shen
Affiliation:
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, People’s Republic of China
*
a) Address all correspondence to this author.e-mail: [email protected]
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Abstract

The poor wettability between ceramics and metals is a main obstacle in obtaining high-performance metal-matrix composites (MMCs) parts using direct metal laser sintering (DMLS). Rare earth (RE) elements, due to their unique physical and chemical properties, have high potential for improving laser processability of MMCs. In this work, a comparative study was performed to investigate the influence of RE–Si–Fe addition on microstructural features and mechanical properties of DMLS processed tungsten carbide (WC) particle reinforced Cu MMCs parts. It showed that by adding 3 wt% RE–Si–Fe, the WC reinforcing particles were refined, the particle dispersion state was homogenized, and the particle/matrix interfacial compatibility was enhanced. The RE–Si–Fe-containing WC/Cu MMCs parts possessed significantly elevated mechanical properties, i.e., densification level of 95.7%, microhardness of 417.6 HV, fracture strength of 201.8 MPa, and friction coefficient of 0.8. The metallurgical functions of the RE–Si–Fe additive for the improvement of DMLS quality of MMCs parts were discussed.

Keywords

CompositeLaserPowder metallurgy
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 11 , November 2009 , pp. 3397 - 3406
Copyright
Copyright © Materials Research Society 2009

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References

1.Zhang, J. and Zhou, Y.C.: Microstructure, mechanical, and electrical properties of Cu–Ti3AlC2 and in situ Cu–TiCx composites. J. Mater. Res. 23, 924 (2008).Google Scholar
2.Deshpande, P.K. and Lin, R.Y.: Wear resistance of WC particle reinforced copper matrix composites and the effect of porosity. Mater. Sci. Eng., A 418, 137 (2006).CrossRefGoogle Scholar
3.Deshpande, P.K., Li, J.H., and Lin, R.Y.: Infrared processed Cu composites reinforced with WC particles. Mater. Sci. Eng., A 429, 58 (2006).Google Scholar
4.Gusmano, G., Bianco, A., Polini, R., Magistris, P., and Marcheselli, G.: Chemical synthesis and sintering behaviour of highly dispersed W/Cu composite powders. J. Mater. Sci. 36, 901 (2001).Google Scholar
5.Gu, D.D. and Shen, Y.F.: Influence of Cu-liquid content on densification and microstructure of direct laser sintered submicronW–Cu/ micron Cu powder mixture. Mater. Sci. Eng., A 489, 169 (2008).Google Scholar
6.Xing, H.W., Cao, X.M., Hu, W.P., Zhao, L.Z., and Zhang, J.S.: Interfacial reactions in 3D-SiC network reinforced Cu-matrix composites prepared by squeeze casting. Mater. Lett. 59, 1563 (2005).CrossRefGoogle Scholar
7.Rathod, S., Modi, O.P., Prasad, B.K., Chrysanthou, A., Vallauri, D., Deshmukh, V.P., and Shah, A.K.: Cast in situ Cu–TiC composites: Synthesis by SHS route and characterization. Mater. Sci. Eng., A 502, 91 (2009).Google Scholar
8.Agarwala, M., Bourell, D., Beaman, J., Marcus, H., and Barlow, J.: Direct selective laser sintering of metals. Rapid Prototyping J. 1, 26 (1995).Google Scholar
9.Kruth, J.P., Levy, G., Klocke, F., and Childs, T.H.C.: Consolidation phenomena in laser and powder-bed based layered manufacturing. CIRP Ann. Manuf. Technol. 56, 730 (2007).Google Scholar
10.Kruth, J.P., Froyen, L., Rombouts, M., Van Vaerenbergh, J., and Mercells, P.: New ferro powder for selective laser sintering of dense parts. CIRP Ann. Manuf. Technol. 52, 139 (2003).Google Scholar
11.Kruth, J.P., Kumar, S., and Van Vaerenbergh, J.: Study of laser-sinterability of ferro-based powders. Rapid Prototyping J. 11, 287 (2005).CrossRefGoogle Scholar
12.Kumar, S. and Kruth, J.P.: Effect of bronze infiltration into laser sintered metallic parts. Mater. Des. 28, 400 (2007).Google Scholar
13.Kumar, S.: Manufacturing of WC–Co moulds using SLS machine. J. Mater. Process. Technol. 209, 3840 (2009).CrossRefGoogle Scholar
14.Simchi, A. and Godlinski, D.: Effect of SiC particles on the laser sintering of Al–7Si–0.3Mg alloy. Scr. Mater. 59, 199 (2008).CrossRefGoogle Scholar
15. Fraunhofer ILT Annual Report 2007, http://www.ilt.fraunhofer. de/eng/ilt/pdf/eng/JB2007-eng.pdf.Google Scholar
16.Das, S.: Physical aspects of process control in selective laser sintering of metals. Adv. Eng. Mater. 5, 701 (2003).Google Scholar
17.Gåå rd, A., Krakhmalev, P., and Bergström, J.: Microstructural characterization and wear behavior of (Fe, Ni)–TiC MMC prepared by DMLS. J. Alloys Compd. 421, 166 (2006).Google Scholar
18.Wu, C.M.L., Yu, D.Q., Law, C.M.T., and Wang, L.: Properties of lead-free solder alloys with rare earth element additions. Mater. Sci. Eng., R 44, 1 (2004).Google Scholar
19.Niu, Y., Fu, G.Y., and Gesmundo, F.: The corrosion of a Fe–15 wt% Ce alloy in coal gasification type atmospheres at 600 to 800°C. J. Phase Equilib. 23, 61 (2002).CrossRefGoogle Scholar
20.Shen, N.F., Zhang, D.J., and Li, Z.D.: New Handbook of Metallic Materials, 1st ed. (Science Press, Beijing, 2003), p. 329.Google Scholar
21.Simchi, A. and Pohl, H.: Effects of laser sintering processing parameters on the microstructure and densification of iron powder. Mater. Sci. Eng., A 359, 119 (2003).Google Scholar
22.Yuan, Z.F., Ke, J.J., and Li, J.: Surface Tension of Metals and Alloys, 1st ed. (Science Press, Beijing, 2006), p. 29.Google Scholar
23.Hafner, J. and Spišá k, D.: Structure and stability of the low-index surfaces of Fe3Si: Ab initio density functional investigations. Phys. Rev. B 75, 195411 (2007).Google Scholar
24.Homma, Y., Kobayashi, Y., Ogino, T., Takagi, D., Ito, R., Jung, Y.J., and Ajayan, P.M.: Role of transition metal catalysts in single-walled carbon nanotube growth in chemical vapor deposition. J. Phys. Chem. B 107, 12161 (2003).CrossRefGoogle Scholar
25.Niu, H.J. and Chang, I.T.H.: Instability of scan tracks of selective laser sintering of high speed steel powder. Scr. Mater. 41, 1229 (1999).Google Scholar
26.Tian, Y.S., Chen, C.Z., Chen, L.X., and Huo, Q.H.: Effect of RE oxides on the microstructure of the coatings fabricated on titanium alloys by laser alloying technique. Scr. Mater. 54, 847 (2006).CrossRefGoogle Scholar
27.Gu, D.D. and Shen, Y.F.: Influence of phosphorus element on direct laser sintering of multicomponent Cu-based metal powder. Metall. Mater. Trans. B 37, 967 (2006).Google Scholar