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Profiling Microstructure Evolution Roadmap in Heat-Affected Zones of EH36 Shipbuilding Steel Under Controlled Thermal Simulation

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Abstract

Microstructural evolution roadmap in heat-affected zones of EH36 shipbuilding steel has been investigated at different welding heat inputs. Quantified results show that resultant microstructures transform from fine bainite accompanied by acicular ferrite at low heat input, to coarse bainite at medium heat input, and to polygonal ferrite and pearlite at high heat input. In addition, it is found that heat input does not have significant influence over the characteristics of potent inclusions promoting acicular ferrite nucleation.

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The authors would like to acknowledge the support from the National Natural Science Foundation of China (51622401, 51861130361, 51861145312 and 51850410522), Newton Advanced Fellowship by Royal Society (RP12G0414), Research Fund for Central Universities (N172502004), Xingliao Talents Program (XLYC1807024 and XLYC1802024), and Global Talents Recruitment Program endowed by the Chinese Government. X.Z. also appreciates the auspices from China Scholarship Council (No. 201806080143) and Chinese Association for Science and Technology.

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Authors and Affiliations

  1. School of Metallurgy, Northeastern University, Shenyang, 110819, China

    Xiaodong Zou, Jincheng Sun & Cong Wang

  2. Department of Materials Engineering, The University of Tokyo, Tokyo, 113-8656, Japan

    Xiaodong Zou & Hiroyuki Matsuura

  3. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110819, China

    Cong Wang

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  1. Xiaodong Zou
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  2. Jincheng Sun
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  4. Cong Wang
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Correspondence to Cong Wang.

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Manuscript submitted December 10, 2019.

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Zou, X., Sun, J., Matsuura, H. et al. Profiling Microstructure Evolution Roadmap in Heat-Affected Zones of EH36 Shipbuilding Steel Under Controlled Thermal Simulation. Metall Mater Trans A 51, 3392–3397 (2020). https://doi.org/10.1007/s11661-020-05816-y

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