Strength of Materials

, Volume 51, Issue 2, pp 291–299 | Cite as

Ductile-to-Brittle Transition and Impact Fracture Behavior of 3Mn–Si–Ni Low Carbon Martensitic Steel

  • Y. J. ZhaoEmail author
  • Y. M. Su
  • M. Liu
  • Z. L. Hu
  • P. Tang

Impact behavior related to crack initiation and growth of low carbon martensitic 3Mn–Si–Ni steel was investigated by instrumented impact Charpy V-notch tests. Load–displacement curves were acquired, so significant characteristic load parameters and impact absorbed energies in different fracture phases from 20~(−70)°C were determined. The ductile–brittle transition temperature (DBTT) was also investigated and the corresponding fractograph was obtained. The DBTT of the 3Mn–Si–Ni steel is −50°C. With the temperature decreased from 20 to −70°C, the maximum force Fm increases and the difference between the Fm and the crack stable propagation initial force Fiu decreases. Higher force was used to trigger the crack and tended to be brittle fracture at lower temperature, such as −50 and −70°C. Also once the crack initiated, it will extend rapidly until fracture when the tested steel serves at very low temperature, especially below −20°C. With the impact temperature decreasing to −70°C, the crack unstable growth final force Fa decreased to nearly zero and there isn’t distinct secondary fiber area.


ductile–brittle transition temperature impact fracture behavior instrumented Charpy impact martensitic steel 



This work was financially supported by the National Natural Science Foundation of China (No. 51661004), Guangxi Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials of China (No. GXYSSF1809), and Guangxi Natural Science Foundation of China (No. 2017GXNSFAA198271).


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Y. J. Zhao
    • 1
    • 2
    Email author
  • Y. M. Su
    • 1
  • M. Liu
    • 1
  • Z. L. Hu
    • 2
  • P. Tang
    • 1
    • 2
  1. 1.School of Resources, Environment and MaterialsGuangxi UniversityNanningChina
  2. 2.Guangxi Key Laboratory of Processing for Non-Ferrous Metal and Featured MaterialsNanningChina

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