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Influence of heterogeneities with different length scale on the plasticity of Fe-base ultrafine eutectic alloys

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Abstract

The evolution of microstructure and its influence on the mechanical properties of high-strength ultrafine eutectic Fe–(Ti, Zr)–(B, Co) alloys has been studied. The addition of B or Co improves the room temperature compressive plasticity from 1% to ∼8.5% or ∼14%, respectively, due to the formation of a heterogeneous microstructure with distinctly different length scales, which can delay the propagation of shear bands and promotes the activation of multiple shear bands.

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Acknowledgments

This work was supported by the Global Research Laboratory Program of the Korea Ministry of Education, Science and Technology. Additional funding was supported from the Center for Advanced Materials Processing (CAMP) of the 21st Century Frontier R&D Program funded by the Ministry of Knowledge Economy (MKE), Republic of Korea.

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Authors and Affiliations

  1. Center for Non-Crystalline Materials, Department of Metallurgical Engineering, Yonsei University, Seoul, 120-749, Korea

    Jin Man Park & Do Hyang Kim

  2. Department of Advanced Materials Engineering, Sejong University, Seoul, 143-747, Korea

    Ki Buem Kim

  3. Leibniz Institute for Solid State and Materials Research Dresden, Institute for Complex Materials, D-01171, Dresden, Germany

    Min Ha Lee & Jürgen Eckert

  4. Advanced Materials Division, Korea Institute of Industrial Technology, Incheon, 406-840, Korea

    Min Ha Lee

  5. Division of Applied Science, Cheongju University, Cheongju, 360-764, Korea

    Won Tae Kim

  6. TU Dresden, Institute of Materials Science, D-01062, Dresden, Germany

    Jürgen Eckert

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  1. Jin Man Park
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  2. Do Hyang Kim
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Correspondence to Do Hyang Kim.

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Park, J.M., Kim, D.H., Kim, K.B. et al. Influence of heterogeneities with different length scale on the plasticity of Fe-base ultrafine eutectic alloys. Journal of Materials Research 23, 2003–2008 (2008). https://doi.org/10.1557/JMR.2008.0252

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  • DOI: https://doi.org/10.1557/JMR.2008.0252

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