Advertisement

Analyzing the Effect of CeB6 on Microstructure and Mechanical Properties of High-Speed Steel Consolidated by Powder Metallurgy

  • Qi Ouyang
  • Peng Luo
  • Fengli Zhang
  • Qinqiu He
  • Ying Wang
  • Songlin Li
Article
  • 20 Downloads

Abstract

By adding various amounts of CeB6, high-speed steel (M3:2) was consolidated by powder metallurgy in the form of sintering. The addition of CeB6 improved the density of the sintered steel and the formation of M6C phase in microstructure. It is speculated that CeB6 was decomposed into boron and cerium. Boron atoms were enriched in M6C carbide phases, but cerium atoms were mainly clustered on grain boundary while they were converted to oxides, whereby the mechanical properties were improved. For example, upon the sintering at 1210 °C, relative density ~ 98.5% and average grain size ~ 18 μm were obtained with CeB6 content at 0.3 wt.%. Excellent mechanical properties, e.g., the Rockwell hardness ~ 52 HRC, flexural strength ~ 3.05 GPa, and fracture toughness ~ 40.92 MPa m1/2, were achieved in the sample containing 0.3 wt.% CeB6, which implies accordingly remarkable increases by 23.5, 38.1, and 23.7%, of the properties compared with those in the sample free of CeB6.

Keywords

high-speed steel microstructure mechanical property powder metallurgy 

Notes

Acknowledgments

This study is supported by the National High Technology Research and Development Program of China (863 Program) under the Grant Number 2013AA031102. One of the authors (PL) gratefully acknowledges the financial support from Shanghai Collaborative Innovation Center for Heavy Casting/Forging Manufacturing Technology.

References

  1. 1.
    E.M. Ruiz-Navas, R. Garcí, E. Gordo, and F.J. Velasco, Development and Characterization of High-Speed Steel Matrix Composites Gradient Materials, J. Mater. Process. Technol., 2003, 143–144, p 769–775CrossRefGoogle Scholar
  2. 2.
    Z.Y. Liu, N.H. Loh, K.A. Khor, and S.B. Tor, Mechanical Alloying of TiC/M2 High Speed Steel Composite Powders and Sintering Investigation, Mater. Sci. Eng., A, 2001, 311, p 13–21CrossRefGoogle Scholar
  3. 3.
    F. Velasco, R. Isabel, N. Antón, M.A. Martínez, and J.M. Torralba, TiCN-High Speed Steel Composites: Sinterability and Properties, Compos. A, 2002, 33, p 819–827CrossRefGoogle Scholar
  4. 4.
    H. Fu, Q. Xiao, and J.D. Xing, A Study on the Crack Control of a High-Speed Steel Roll Fabricated by a Centrifugal Casting Technique, Mater. Sci. Eng., A, 2008, 474, p 82–87CrossRefGoogle Scholar
  5. 5.
    Y. Xiang, Z. Chen, X. Wei, and Z. Wu, Influence of Ce on Microstructure and Properties of High-Carbon High-Boron Steel, Rare Met. Mater. Eng., 2015, 44, p 1335–1339CrossRefGoogle Scholar
  6. 6.
    Q. Zhang, Y. Jiang, W. Shen, H. Zhang, Y. He, N. Lin, C.T. Liu, H. Huang, and X. Huang, Direct Fabrication of High-Performance High Speed Steel Products Enhanced by LaB6, Mater. Des., 2016, 112, p 469–478CrossRefGoogle Scholar
  7. 7.
    R. Zhou, D. Wang, J. Shen et al., Effect of Carbon Addition on the Microstructure and Properties of M3:2 High Speed Steels Processed by Powder Metallurgy, Adv. Mater. Res., 2007, 29–30, p 153–158CrossRefGoogle Scholar
  8. 8.
    G. Steven, A.E. Nehrenberg, and T.V. Philip, High Performance High Speed Steel by Design, Trans. ASM, 1964, 57, p 925–948Google Scholar
  9. 9.
    R.M. German, Supersolidus Liquid Phase Sintering of Prealloyed Powders, Metall. Mater. Trans. A, 1997, 28, p 1553–1567CrossRefGoogle Scholar
  10. 10.
    S.J.L. Kang, Sintering: Densification, Grain Growth, and Microstructure, J. Phys. IV, 2005, 7, p 674–742Google Scholar
  11. 11.
    M.M. Serna and J.L. Rossi, MC Complex Carbide in AISI, M2 High-Speed Steel, Mater. Lett., 2009, 63, p 691–693CrossRefGoogle Scholar
  12. 12.
    H.Y. Wang, H.P. Ren, Z.L. Jin et al., Effect of Rare Earth on Microstructure and Impact Toughness of Low Carbon Steel Based on Compact Strip Production Process, Adv. Mater. Res., 2011, 189–193(8), p 1753–1756CrossRefGoogle Scholar
  13. 13.
    R. Hara, M. Yamamoto, G. Ito, K. Kamimiyada, I. Narita, and H. Miyahara, Effect of Nitrogen on the Microstructure and Hardness of High-Carbon High-Speed Tool Steel Type Alloys, Mater. Trans., 2016, 57, p 1945–1951CrossRefGoogle Scholar
  14. 14.
    G. Herranz, A. Romero, V. de Castro, and G.P. Rodriguez, Processing of AISI, M2 High Speed Steel Reinforced with Vanadium Carbide by Solar Sintering, Mater. Des., 2014, 54, p 934–946CrossRefGoogle Scholar
  15. 15.
    N.S. Myers and R.M. German, Supersolidus Liquid Phase Sintering of Injection Molded M2 Tool Steel, Int. J. Powder Metall., 1999, 35, p 45–51Google Scholar
  16. 16.
    T.T. Shen, D.H. Xiao, X.Q. Ou, M. Song, Y.H. He, N. Lin, and D.F. Zhang, Effects of LaB6 Addition on the Microstructure and Mechanical Properties of Ultrafine Grained WC-10Co Alloys, J. Alloys Compd., 2011, 509, p 1236–1243CrossRefGoogle Scholar
  17. 17.
    M. Godec, B.Š. Batič, D. Mandrino, A. Nagode, V. Leskovšek, S.D. Škapin, and M. Jenko, Characterization of the Carbides and the Martensite Phase in Powder-Metallurgy High-Speed Steel, Mater. Charact., 2010, 61, p 452–458CrossRefGoogle Scholar
  18. 18.
    L. Karlsson, H. Nordén, and H. Odelius, Non-equilibrium Grain Boundary Segregation of Boron in Austenitic Stainless Steel-I. Large Scale Segregation Behavior, Acta Metall., 1988, 36, p 1–12CrossRefGoogle Scholar
  19. 19.
    V. Astini, Y. Prasetyo, and E.R. Baek, Effect of Boron Addition on the Microstructure and Mechanical Properties of 6.5%V-5%W High Speed Steel, Met. Mater. Int., 2012, 18, p 923–931CrossRefGoogle Scholar
  20. 20.
    G. Cai and C. Li, Effects of Ce on Inclusions, Microstructure, Mechanical Properties, and Corrosion Behavior of AISI, 202 Stainless Steel, J. Mater. Eng. Perform., 2015, 24, p 3989–4009CrossRefGoogle Scholar
  21. 21.
    C. Tonnes, Full Density Sintering of Martensitic Stainless Steel with Boron Additions, Met. Powder Rep., 1992, 47(11), p 1880–1886CrossRefGoogle Scholar

Copyright information

© ASM International 2018

Authors and Affiliations

  • Qi Ouyang
    • 1
  • Peng Luo
    • 2
  • Fengli Zhang
    • 1
  • Qinqiu He
    • 1
  • Ying Wang
    • 1
  • Songlin Li
    • 1
  1. 1.State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaPeople’s Republic of China
  2. 2.Shanghai Collaborative Innovation Center for Heavy Casting/Forging Manufacturing Technology, School of MaterialsShanghai Dianji UniversityShanghaiPeople’s Republic of China

Personalised recommendations