Effect of Carbon Content on Bainite Transformation Start Temperature on Fe–9Ni–C Alloys

  • Hiroyuki KawataEmail author
  • Toshiyuki Manabe
  • Kazuki Fujiwara
  • Manabu Takahashi
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


Upper bainite in steels has many common features with lath martensite in steels. But there are some studies that indicate that bainite transformation start temperature (Bs) is greater than T0 on steels containing high carbon content. We measured Bs on Fe–9 mass% Ni alloys containing 0.003–0.89 mass% C. In low carbon alloys, Bs is below T0, and the increasing of carbon content decreases Bs standing in a line that is parallel to T0. On the other hand, in high carbon alloys, carbon content does not affect Bs which stands around 753 K. The border between these two tendencies and Bs in high carbon alloys seem to correspond to the intersection point between the line of Bs on low carbon alloys and the calculated γ/(γ + θ) phase boundary.


Bainite Transformation T0 Cementite Driving force 



The authors would like to express their sincere thanks to Dr. Goro Miyamoto (Tohoku University, Japan) and Dr. Tadashi Maki (Honorary Professor of Kyoto University, Japan) for their valuable comments and stimulating discussions.


  1. 1.
    Bhadeshia HKDH (2001) Bainite in steels, 2nd edn. IOM Communications Ltd, LondonGoogle Scholar
  2. 2.
    Furuhara T, Kawata H, Morito S, Maki T (2006) Mater Sci Eng A A431:228Google Scholar
  3. 3.
    Ohmori Y, Ohtani H, Kunitake T (1971) Trans ISIJ 11:250Google Scholar
  4. 4.
    Morito S, Tanaka H, Konishi R, Furuhara T, Maki T (2003) Acta Mater 51:1789CrossRefGoogle Scholar
  5. 5.
    Bhadeshia HKDH (1981) Acta Mater 29:1117CrossRefGoogle Scholar
  6. 6.
    Aaronson HI, Domian HA, Pound GM (1966) Trans Met Soc AIME 236:753Google Scholar
  7. 7.
    Tsuzaki K, Fujiwara K, Maki T (1991) Mater Trans JIM 32:667CrossRefGoogle Scholar
  8. 8.
    Ohmori Y, Ohtsubo H, Georgima K, Maruyama N (1993) Mater Trans JIM 34:216CrossRefGoogle Scholar
  9. 9.
    Kawata H, Hayashi K, Sugiura N, Yoshinaga N, Takahashi. M (2010) Mater Sci Forum 638–642:3307CrossRefGoogle Scholar
  10. 10.
    Santofimia MJ, Zhao L, Sietsma. J (2011) Metall Mater Trans A 42A:3620CrossRefGoogle Scholar
  11. 11.
    Kawata H, Fujiwara K, Takahashi M (2017) ISIJ Int 57:1866–1873CrossRefGoogle Scholar
  12. 12.
    Kawata H, Manabe T, Fujiwara K, Takahashi M (2018) ISIJ Int 58 (in press)Google Scholar
  13. 13.
    Goldenstein H, Aaronson HI (1990) Metall Trans A 21A:1465CrossRefGoogle Scholar
  14. 14.
    Yin J, Hillert M, Borgenstam A (2017) Metall Mater Trans A 48:4006CrossRefGoogle Scholar
  15. 15.
    Kinsman KR, Aaronson HI (1970) Metall Trans 1:1485CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2018

Authors and Affiliations

  • Hiroyuki Kawata
    • 1
    Email author
  • Toshiyuki Manabe
    • 1
  • Kazuki Fujiwara
    • 2
  • Manabu Takahashi
    • 1
  1. 1.Steel Research LaboratoriesNippon Steel & Sumitomo Metal Corporation20-1 Shintomi, Futtsu, ChibaJapan
  2. 2.Advanced Technology Research LaboratoriesNippon Steel & Sumitomo Metal Corporation1-8 Fuso-Cho, AmagasakiJapan

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