Characterization of a New Fe-C-Mn-Si-Cr Bearing Alloy: Tempered Martensite Embrittlement Susceptibility

  • J. B. MarcominiEmail author
  • H. Goldenstein


Bearing steels containing 1% C and 1.5% Cr have been the usual material of choice for machine components submitted to rolling and contact fatigue, for more than a century. As a rule these steels are quenched from the intercritical gamma + carbide region and tempered at low temperatures (less than 250 °C), in order to retain the high hardness of the martensite matrix and avoid the tempered martensite embrittlement (TME) phenomena, which compromise the toughness of steels tempered at higher temperatures. A new high Si alloy was developed for bearing applications. The inhibiting and/or retarding effect of Si on the kinetics of cementite precipitation leads to a higher temperature of TME occurrence, allowing the tempering of the components at a higher temperature, thus increasing the toughness, without sacrificing the high hardness. The purpose of this work was to confirm the TME resistance of the new alloy. In this work, impact tests result for commercial SAE/AISI 52100 (0.25% Si) and for a modified 52100 containing 1.74% Si, were compared. No evidence of TME was detected on the Si-modified steel.


alloy embrittlement martensite tempering 



The authors thank Bardella SA Mechanical Industries, University of São Paulo, NSK do Brazil, Thyssenkrupp M. Campo Limpo and the partial support from CNPq (National Research Council).


  1. 1.
    L.C. Briant and S.K. Banerji, Intergranular Failure in Steel: The Role of Grain-Boundary Composition, Int. Met. Rev., 1978, 23, p 164–199CrossRefGoogle Scholar
  2. 2.
    W. Hertzberg, Deformation and Fracture Mechanic of Engineering Materials, 4th ed., Wiley, New York, 1996Google Scholar
  3. 3.
    R.M. Horn and R.O. Ritchie, Mechanism of Tempered Martensite Embrittlement in Low Alloy Steel, Metall. Trans. A, 1978, 9, p 1039–1053CrossRefGoogle Scholar
  4. 4.
    A. Nakashima and J.F. Libsch, Fracture Mechanism of Tempered Martensite Embrittlement, Trans. ASM, 1961, 53, p 753Google Scholar
  5. 5.
    J. Pietikainen, Considerations About Tempered Martensite Embrittlement, Mater. Sci. Eng. A, 1999, A273–275, p 466–470CrossRefGoogle Scholar
  6. 6.
    W.S. Owen, The Effect of Silicon on the Kinetics of Tempering, Trans. ASM, 1954, 46, p 812–829Google Scholar
  7. 7.
    C.J. Altstetter, M. Cohen, and B.L. Averbach, Effect of Silicon on the Tempering of AISI, 43XX Steels, Trans. ASM, 1962, 55, p 287Google Scholar
  8. 8.
    G.R. Speich and W.C. Leslie, Tempering of Steel, Metall. Mater. Trans., 1972, 3, p 1043–1054CrossRefGoogle Scholar
  9. 9.
    R.S. Hyde, D.K. Matlock, and G. Krauss, Quench Embrittlement: Intergranular Fracture Due to Cementite and Phosphorus in Quenched Carbon and Alloy Steels, 40th MWSP Conference Proceedings, ISS, 1998, p 921–92Google Scholar
  10. 10.
    R.C. Tokimatsu and I. Ferreira, A complexidade do mecanismo de fragilização da martensita revenida, contribuição técnica apresentada no 50º Congresso Anual da ABM-01 a 04 de outubro de 1995 (in portuguese)Google Scholar
  11. 11.
    A. Reguly, T.R. Strohaecker, G. Krauss, and D.K. Matlock, Quench Embrittlement of Hardened 5160 Steel as Function of Austenitizing Temperature, Metall. Mater. Trans. A, 2004, 35A, p 153–162CrossRefGoogle Scholar
  12. 12.
    N. Eliaz et al., Characteristics of Hydrogen Embrittlement, Stress Corrosion Cracking and Tempered Martensite Embrittlement in High-Strength Steels, Eng. Fail. Anal., 2002, 9, p 167–184CrossRefGoogle Scholar
  13. 13.
    F.Z. Ebrahimi and G. Krauss, The Evaluation of Tempered Martensite Embrittlement in 4130 Steel by Instrumented Charpy V-Notch Testing, Metall. Mater. Trans. A, 1983, 14, p 1109–1119CrossRefGoogle Scholar
  14. 14.
    H.K.D.H. Bhadeshia and D.V. Edmonds, Tempered Martensite Embrittlement: Role of Retained Austenite and Cementite, Met. Sci., 1979, 13, p 325–334Google Scholar
  15. 15.
    D.H. Sherman et al., Characterization of the Carbon and Retained Austenite Distributions in Martensitic Medium Carbon, High Silicon Steel, Metall. Mater. Trans. A, 2007, 38A, p 1698–1711CrossRefGoogle Scholar
  16. 16.
    S. Lee et al., Correlation of Microstructure and Tempered Martensite Embrittlement in Two 4340 Steel, Metall. Mater. Trans. A, 1989, 20A, p 1089CrossRefGoogle Scholar

Copyright information

© ASM International 2013

Authors and Affiliations

  1. 1.University of São PauloLorenaBrazil
  2. 2.University of São PauloSão PauloBrazil

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