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The addition of aluminum to brittle martensitic steels in order to increase ductility by forming a grain boundary ferritic microfilm

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Abstract
The addition of 2 wt% of aluminum to a Fe-0.4 wt% C martensitic steel led to the formation of a ferritic microfilm along the prior austenitic grain boundaries after austenitization and quenching. Both materials with and without Al exhibited a similar bulk hardness of 580 HV3 owing to their predominantly martensitic microstructure. Bending tests and the analysis of the corresponding fracture surfaces revealed a ductile fracture of the ferritic microfilm opposed to an intergranular fracture behavior of the samples without Al, which translated into a significantly increase in the bulk ductility of the Al-alloyed steel by more than 100%. These results open up new grain boundary engineering opportunities to increase the ductility of hard and otherwise brittle steels.
Keywords
Condensed Matter Physics, General Materials Science, Mechanics of Materials, Metals and Alloys, Mechanical Engineering, Aluminum, Ductility, Fractography, Martensite, Microfilm, TRANSFORMATION, BAINITE, KINETICS

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MLA
Pinson, Margot, et al. “The Addition of Aluminum to Brittle Martensitic Steels in Order to Increase Ductility by Forming a Grain Boundary Ferritic Microfilm.” SCRIPTA MATERIALIA, vol. 213, 2022, doi:10.1016/j.scriptamat.2022.114606.
APA
Pinson, M., Das, S. M., Springer, H., Depover, T., & Verbeken, K. (2022). The addition of aluminum to brittle martensitic steels in order to increase ductility by forming a grain boundary ferritic microfilm. SCRIPTA MATERIALIA, 213. https://doi.org/10.1016/j.scriptamat.2022.114606
Chicago author-date
Pinson, Margot, Saurubh M. Das, Hauke Springer, Tom Depover, and Kim Verbeken. 2022. “The Addition of Aluminum to Brittle Martensitic Steels in Order to Increase Ductility by Forming a Grain Boundary Ferritic Microfilm.” SCRIPTA MATERIALIA 213. https://doi.org/10.1016/j.scriptamat.2022.114606.
Chicago author-date (all authors)
Pinson, Margot, Saurubh M. Das, Hauke Springer, Tom Depover, and Kim Verbeken. 2022. “The Addition of Aluminum to Brittle Martensitic Steels in Order to Increase Ductility by Forming a Grain Boundary Ferritic Microfilm.” SCRIPTA MATERIALIA 213. doi:10.1016/j.scriptamat.2022.114606.
Vancouver
1.
Pinson M, Das SM, Springer H, Depover T, Verbeken K. The addition of aluminum to brittle martensitic steels in order to increase ductility by forming a grain boundary ferritic microfilm. SCRIPTA MATERIALIA. 2022;213.
IEEE
[1]
M. Pinson, S. M. Das, H. Springer, T. Depover, and K. Verbeken, “The addition of aluminum to brittle martensitic steels in order to increase ductility by forming a grain boundary ferritic microfilm,” SCRIPTA MATERIALIA, vol. 213, 2022.
@article{8743429,
  abstract     = {{The addition of 2 wt% of aluminum to a Fe-0.4 wt% C martensitic steel led to the formation of a ferritic microfilm along the prior austenitic grain boundaries after austenitization and quenching. Both materials with and without Al exhibited a similar bulk hardness of 580 HV3 owing to their predominantly martensitic microstructure. Bending tests and the analysis of the corresponding fracture surfaces revealed a ductile fracture of the ferritic microfilm opposed to an intergranular fracture behavior of the samples without Al, which translated into a significantly increase in the bulk ductility of the Al-alloyed steel by more than 100%. These results open up new grain boundary engineering opportunities to increase the ductility of hard and otherwise brittle steels.}},
  articleno    = {{114606}},
  author       = {{Pinson, Margot and Das, Saurubh M. and Springer, Hauke and Depover, Tom and Verbeken, Kim}},
  issn         = {{1359-6462}},
  journal      = {{SCRIPTA MATERIALIA}},
  keywords     = {{Condensed Matter Physics,General Materials Science,Mechanics of Materials,Metals and Alloys,Mechanical Engineering,Aluminum,Ductility,Fractography,Martensite,Microfilm,TRANSFORMATION,BAINITE,KINETICS}},
  language     = {{eng}},
  pages        = {{4}},
  title        = {{The addition of aluminum to brittle martensitic steels in order to increase ductility by forming a grain boundary ferritic microfilm}},
  url          = {{http://dx.doi.org/10.1016/j.scriptamat.2022.114606}},
  volume       = {{213}},
  year         = {{2022}},
}

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