Tuning Weld Metal Mechanical Responses via Welding Flux Optimization of TiO2 Content: Application into EH36 Shipbuilding Steel

  • Jin Zhang
  • Ju Leng
  • Cong WangEmail author


A series of TiO2-containing basic-fluoride-type agglomerated fluxes was applied to join EH36 shipbuilding steel under high heat input SAW. The effects of TiO2 content on composition, microstructure features, inclusions characteristics, and mechanical properties of ensuing weld metals (WMs) were systematically investigated. 6 wt pct TiO2 leads to the most optimal mechanical properties. Such behaviors were elucidated via transfer of alloying elements, which enables a good combination of acicular ferrites (AFs) and accompanying microstructures.


We thank the National Natural Science Foundation of China (Grant Nos. 51622401, 51628402, 51861130361, 51861145312, and 51850410522), the Newton Advanced Fellowship by the Royal Society (Grant No. RP12G0414), the Research Fund for Central Universities (Grant No. N172502004), the National Key Research and Development Program of China (Grant No. 2016YFB0300602), and the Global Talents Recruitment Program endowed by the Chinese government for their financial support. We also thank the State Key Laboratory of Solidification Processing, Northwestern Polytechnical University (Grant No. SKLSP201805), Shagang Steel, and Lincoln Electric China.


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© The Minerals, Metals & Materials Society and ASM International 2019

Authors and Affiliations

  1. 1.School of MetallurgyNortheastern UniversityShenyangChina

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