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Liquation behavior in the weld HAZ of high Si nodular iron

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Abstract

In the present study, liquation behavior including the constitutional liquation phenomena in the weld heataffected zone (HAZ) of nodular cast iron with 4% Si was investigated. The thermal cycle of the weld HAZ was simulated using a Gleeble simulator at various peak temperatures and a fast heating rate of 1000 °C/sec was selected to observe the constitutional liquation phenomenon. Differential thermal analysis has shown that the eutectic constituents of γ + Laves and γ + Fe3C begin to melt at 1120 °C and 1140 °C, respectively. Meanwhile, constitutional liquation by γ/graphite reaction occurred above 1140 °C, due to carbon enrichment around the graphite nodules.

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Authors and Affiliations

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

    Kyutae Han, Sanghoon Kim & Changhee Lee

  2. POSCO Technical Research Lab., 1, Pohang, 790-785, Korea

    Seunggab Hong

Authors
  1. Kyutae Han
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  2. Sanghoon Kim
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  3. Seunggab Hong
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  4. Changhee Lee
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Correspondence to Changhee Lee.

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Han, K., Kim, S., Hong, S. et al. Liquation behavior in the weld HAZ of high Si nodular iron. Met. Mater. Int. 18, 371–377 (2012). https://doi.org/10.1007/s12540-012-2024-4

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  • DOI: https://doi.org/10.1007/s12540-012-2024-4

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