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Effect of Hot Rolling on Bonding Characteristics and Impact Behavior of a Laminated Composite Material Based on UHCS-1.35 Pct C

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Abstract

Two different hot rolling routes were developed to study the influence of thermomechanical factors on interface bonding, characterized by shear tests, and impact behavior of laminates containing five layers of ultrahigh carbon steel (UHCS-1.35C) and five layers of mild steel (MS-0.091C). The relationship between processing and microstructure has been studied by scanning electron microscopy (SEM) and electron dispersive spectroscopy examinations. It has been observed that the path for thickness reduction in the hot roll processing affects fundamentally the bond between layers. Specifically, a “severe” initial thickness reduction of 25 pct in the first cycle, allowing an important processing temperature drop (from 765 °C to 600 °C), produces a strong bond, which prevents delamination. On the contrary, the application of “soft” and gradual thickness reductions results in less tough bonds that permit delamination and, therefore, multiply the impact resistance.

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Acknowledgments

The authors gratefully acknowledge the support of Comunidad de Madrid under Grant No. 07N/0006/2001 and 07N/0065/2002 and also MCYT under Grant No. MAT2003-01172. One of the authors (MP) is grateful for financial support through a “Fulbright” scholarship by the Fulbright Program and Spanish Ministry of Education and Science. Thanks are given to L. del Real Alarcón for the welding work and to F.F. González Rodríguez and J. Chao for assistance during hot rolling and Charpy testing, respectively.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, University of California, Los Angeles, CA, 90095-1595, USA

    M. Pozuelo (Postdoctoral Researcher)

  2. Departamento de Metalurgia Física, CENIM, CSIC, 28040, Madrid, Spain

    F. Carreño (Staff Researcher), C.M. Cepeda-Jiménez (Postdoctoral Researcher) & O.A. Ruano (Professor)

Authors
  1. M. Pozuelo
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  2. F. Carreño
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  3. C.M. Cepeda-Jiménez
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  4. O.A. Ruano
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Corresponding author

Correspondence to M. Pozuelo.

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Manuscript submitted July 27, 2007.

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Pozuelo, M., Carreño, F., Cepeda-Jiménez, C. et al. Effect of Hot Rolling on Bonding Characteristics and Impact Behavior of a Laminated Composite Material Based on UHCS-1.35 Pct C. Metall Mater Trans A 39, 666–671 (2008). https://doi.org/10.1007/s11661-007-9441-x

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  • DOI: https://doi.org/10.1007/s11661-007-9441-x

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