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Effects of Cr and B Contents on Volume Fraction of (Cr,Fe)2B and Hardness in Fe-Based Alloys Used for Powder Injection Molding

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Abstract

In the current study, Fe-based alloys were used for powder injection molding (PIM) parts with various qualities and hardness ranges by varying chemical compositions according to thermodynamically calculated phase diagrams. Their microstructure and hardness values were analyzed and compared with those of the PIM specimens made from conventional Fe-based alloy powders or stainless steel powders. The Cr-to-B ratio (X Cr/X B) and the sum of Fe, Cr, and B content (X Fe+X Cr+X B) were varied to design nine Fe-based alloy compositions based on the composition of Armacor “M” alloy powders (Liquidmetal Technologies, Lake Forest, CA). According to the microstructural analysis results of the cast and heat-treated Fe-based alloys, large amounts of (Cr,Fe)2B were formed in the tempered martensite matrix. The volume fraction of (Cr,Fe)2B was varied from 42 pct to 91 pct with alloy compositions, and these results were well matched with the thermodynamically calculated volume fractions of (Cr,Fe)2B. The hardness of the fabricated alloys was varied from 300 VHN to 1600 VHN with alloy compositions, and this value increased linearly with the increasing volume fraction of (Cr,Fe)2B. From the correlation data between the volume fraction of (Cr,Fe)2B and hardness, the high-temperature equilibrium phase diagram, which could be used for the design of Fe-based alloys with various fractions and hardness values of (Cr,Fe)2B, was made.

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References

  1. Z.Y. Liu, N.H. Loh, K.A. Khor, and S.B. Tor: Mater. Lett., 2000, vol. 45, pp. 32–38.

    Article  CAS  Google Scholar 

  2. H.J. Sung, T.K. Ha, S. Ahn, and Y.W. Chang: J. Mater. Pro. Tech., 2002, vol. 130, pp. 321–27.

    Article  Google Scholar 

  3. P. Suri, S.V. Atre, R.M. German, and J.P. de Souza: Mater. Sci. Eng. A, 2003, vol. A356, pp. 337–44.

  4. C. Binet, D.F. Heaney, R. Spina, and L. Tricarico: J. Mater. Pro. Tech., 2005, vol. 164, pp. 1160–66.

    Article  Google Scholar 

  5. R.P. Koseski, P. Suri, N.B. Earhardt, R.M. German, and Y.S. Kwon: Mater. Sci. Eng. A, 2005, vol. A390, pp. 171–77.

    CAS  Google Scholar 

  6. L.A. Dobrzanski, G. Matula, G. Herranz, A. Varez, B. Levenfeld, and J.M. Torralba: J. Mater. Pro. Tech ., 2006, vol. 175, pp. 173–78.

    Article  CAS  Google Scholar 

  7. G. Shibo, Q. Xuanhui, H. Xinbo, Z. Ting, and D. Bohua: J. Mater. Pro. Tech., 2006, vol. 173, pp. 310–14.

    Article  Google Scholar 

  8. M.-U. Kim, D.-H. Kim, S.-H. Han, E. Fleury, and H.-K. Seok: Metall. Mater. Int., 2011, vol. 17, pp. 283–89.

    Article  CAS  Google Scholar 

  9. Y.J. Kim, J.S. Bae, and H. Chung: Kor. Powder Metall. Inst., 1996, vol. 3, pp. 181–87.

    Google Scholar 

  10. K.M. Kulkarni: Met. Powder Rep., 1990, vol. 45, pp. 629–33.

    Article  Google Scholar 

  11. G.J. Shu, K.S. Hwang, and Y.T. Pan: Acta Mater., 2006, vol. 54, pp. 1335–42.

    Article  CAS  Google Scholar 

  12. Y.X. Wu, D. Blaine, B. Marx, C. Schlaefer, and R.M. German: Metall. Mater. Trans. A, 2002, vol. 33A, pp. 2185–94.

    Article  CAS  Google Scholar 

  13. K.C. Hsu, C.C. Lin, and G.M. Lo: Powder Metall., 1994, vol. 37, pp. 272–76.

    CAS  Google Scholar 

  14. M. Dourandish and A. Simchi: J. Mater. Sci., 2009, vol. 44, pp. 1264–74.

    Article  CAS  Google Scholar 

  15. A. Basu, A.N. Samant, S.P. Harimkar, J.D. Majumdar, I. Manna, and N.B. Dahotre: Surf. Coat. Tech., 2008, vol. 202, pp. 2623–31.

    Article  CAS  Google Scholar 

  16. C.Y. Son, T.S. Yoon, and S. Lee: Metall. Mater. Trans. A, 2009, vol. 40A, pp. 1110–17.

    Article  CAS  Google Scholar 

  17. H.T. Jeong, W. Yook, B.J. Kim, W.T. Kim, and D.H. Kim: Metall. Mater. Int., 2010, vol. 16, pp. 517–22.

    Article  CAS  Google Scholar 

  18. K.A. Khalil and S.W. Kim: Metall. Mater. Int., 2006, vol. 12, pp. 101–06.

    Article  CAS  Google Scholar 

  19. H.W. Jin, C.G. Park, and M.C. Kim: Mater. Sci. Eng. A, 2001, vols. A304–306, pp. 321–26.

  20. K. Lee, C.Y. Son, J.S. Kim, S. Lee, K.Y. Kim, and C.P. Kim: Mater. Sci. Eng. A, 2006, vol. A441, pp. 291–98.

    CAS  Google Scholar 

  21. I. Manna, P.P. Chattopadhyay, F. Banhart, J. Croopnick, and H.-J. Fecht: Wear, 2008, vol. 264, pp. 940–46.

    Article  CAS  Google Scholar 

  22. B. Sundman, B. Jansson, and J.-O. Andersson: CALPHAD, 1985, vol. 9, pp. 153–90.

    Article  CAS  Google Scholar 

  23. M. Lee, H.-K. Kim, and J.-C. Lee: Metall. Mater. Int., 2010, vol. 15, pp. 877–81.

    Article  Google Scholar 

  24. H.-G. Kim and H.J. Jang: Metall. Mater. Int., 2010, vol. 16, pp. 581–85.

    Article  CAS  Google Scholar 

  25. I. Manna, J.D. Majumdar, B.R. Chandra, S. Nayak, and N.B. Dahotre: Surf. Coat. Tech., 2006, vol. 201, pp. 434–40.

    Article  CAS  Google Scholar 

  26. TCFE2000: The Thermo-Calc Steels Database, upgraded by B.-J. Lee and B. Sundman, KTH, Stockholm, Sweden, 1999.

  27. P. Villars, A. Prince, and H. Okamoto: Handbook of Ternary Alloy Phase Diagrams, ASM International, Materials Park, OH, 1995.

  28. B.-J. Lee, N.M. Hwang, and H.M. Lee: Acta Mater., 2006, vol. 45, pp. 1867–74.

    Article  Google Scholar 

  29. D. Kotzott, M. Ade, and H. Hillebrecht: Solid State Sci., 2008, vol. 10, pp. 291–302.

    Article  CAS  Google Scholar 

  30. H.X. Li, S.L. Wang, S. Yi, Z.B. Jiao, Y. Wu, and Z.P. Lu: J. Mag. Mag. Mater., 2009, vol. 321, pp. 2833–37.

    Article  CAS  Google Scholar 

  31. London Metal Exchange, http://www.lme.com, 2010.

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Acknowledgments

This work was supported by POSCO under a contract No. 2010Y023.

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Authors and Affiliations

  1. Center for Advanced Aerospace Materials, Pohang, Korea

    Jeonghyeon Do (Research Assistant), Hyuk-Joong Lee (Research Assistant), Changwoo Jeon (Research Assistant), Dae Jin Ha (Postdoctoral Research Associate) & Choongnyun Paul Kim (Research Professor)

  2. Center for Advanced Aerospace Materials and Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, 790-784, Korea

    Byeong-Joo Lee (Professor) & Sunghak Lee (Professor)

  3. New Growth Technology Strategy Department, POSCO, Seoul, 135-777, Korea

    Yang Su Shin (Team Leader)

Authors
  1. Jeonghyeon Do
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  2. Hyuk-Joong Lee
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  3. Changwoo Jeon
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  5. Choongnyun Paul Kim
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Correspondence to Sunghak Lee.

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Manuscript submitted June 11, 2011.

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Do, J., Lee, HJ., Jeon, C. et al. Effects of Cr and B Contents on Volume Fraction of (Cr,Fe)2B and Hardness in Fe-Based Alloys Used for Powder Injection Molding. Metall Mater Trans A 43, 2237–2250 (2012). https://doi.org/10.1007/s11661-012-1086-8

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