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Mn-Depleted Zone Formation in Rapidly Cooled High-Strength Low-Alloy Steel Welds

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Abstract

The mechanism of formation of an Mn-depleted zone (MDZ) near the inclusion in a steel weld was elucidated based on quantification of MDZ depth and thermodynamic calculations. The effective inclusion phase for intragranular nucleation, which increased as a function of increasing chemical driving force, satisfied the requirements for presence of a considerable quantity of Mn in the phase, and a lower precipitation temperature compared with the solidus temperature of the matrix.

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This work was supported by the Fundamental R&D Program for the Core Technology of Materials (K0006030, Development of joining materials by the control of phase transformation and critical energy) funded by the Ministry of Trade, Industry & Energy (MI, Korea).

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Authors and Affiliations

  1. Division of Materials Science and Engineering, Hanyang University, Seoul, 133-791, Republic of Korea

    Yongjoon Kang, Kyutae Han & Changhee Lee

  2. Department of Materials Engineering, Hanyang University, Ansan, 426-791, Republic of Korea

    Joo Hyun Park

Authors
  1. Yongjoon Kang
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  2. Kyutae Han
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  3. Joo Hyun Park
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  4. Changhee Lee
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Corresponding author

Correspondence to Changhee Lee.

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Manuscript submitted February 4, 2014.

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Kang, Y., Han, K., Park, J.H. et al. Mn-Depleted Zone Formation in Rapidly Cooled High-Strength Low-Alloy Steel Welds. Metall Mater Trans A 45, 4753–4757 (2014). https://doi.org/10.1007/s11661-014-2470-3

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