Abstract
This study investigated the microstructure and the room and high temperature mechanical properties of Fe–Cr–B alloy manufactured by metal injection molding. In addition, hot isostatic pressing was performed to increase the density of the material, and a comparison of properties was made. Microstructural observation confirmed a bi-continuous structure composed of a three-dimensional network of α-Fe phase and (Cr,Fe)2B phase. The HIPed specimen featured a well-formed adhesion between the α-Fe phase and boride, and the number of fine pores was significantly reduced. The tensile results confirmed that the HIPed specimen (RT to 900 °C) had higher strengths compared to the as-sintered specimen, and the change of elongation starting from 700 °C was significantly greater in the HIPed specimen. Fractography suggested that cracks propagated mostly along the interface between the α-Fe matrix and boride in the as-sintered specimen, while direct fracture of boride was observed in addition to interface separation in the HIPed specimen.
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References
A. Bose, The technology and commercial status of powder injection molding. JOM 47, 26 (1995)
R.M. German, Powder Injection Molding (MPIF, Princeton, 1990)
J.H. Do, Ph. D. Thesis (Pohang University of Science and Technology, Pohang, 2012), p. 2–18
A.A. Sorour, Ph. D. Thesis (McGill University, Québec, 2014), p. 19–29
C.K. Kim, C.Y. Son, D.J. Ha, T.S. Yoon, S.H. Lee, N.J. Kim, Korean J. Met. Mater. 45, 80 (2007)
C.Y. Son, T.S. Yoon, S.H. Lee, Metall. Mater. Trans. A 40A, 1110 (2009)
I. McCue, S. Ryan, K. Hemker, X. Xu, N. Li, M. Chen, J. Erlebacher, Adv. Eng. Mater. 18, 46 (2016)
X.F. Zhang, H.Y. Liu, J.D. Guo, J.K. Shang, J. Mater. Sci. Technol. 27, 1072 (2011)
K.U. Kainer, Metal Matrix Composites: Custom-made Materials for Automotive and Aerospace Engineering (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2006)
E.S. Yoon, J.S. Lee, T.S. Yoon, Korean J. Met. Mater. 9, 235 (2002)
A. Bondar, “Boron–Chromium–Iron” in Iron Systems, Part 1, Landolt-Brnstein—Group IV Physical Chemistry (Springer, Berlin, 2008)
J.H. Do, H.J. Lee, C.W. Jeon, D.J. Ha, C.N. Paul Kim, B.J. Lee, S.H. Lee, Y.S. Shin, Metall. Mater. Trans. A 43A, 2237 (2012)
H.J. Kim, S. Grossi, Y.G. Kweon, Met. Mater. Int. 5, 63 (1999)
H.J. Kim, B.H. Yoon, C.H. Lee, Wear 249, 846 (2002)
K.H. Lee, D.H. Nam, S.H. Lee, C.N. Paul Kim, Mater. Sci. Eng. A 428, 124 (2006)
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This work was supported by Inha University Research Grant.
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Lee, KA., Gwon, JH. & Yoon, TS. Microstructure and High Temperature Mechanical Property of Fe–Cr–B Based Metal/Ceramic Composite Manufactured by Metal Injection Molding Process. Met. Mater. Int. 24, 381–389 (2018). https://doi.org/10.1007/s12540-018-0054-2
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DOI: https://doi.org/10.1007/s12540-018-0054-2