alexa The Role of Inclusions in Controlling HSLA Steel Weld Microstructures
Materials Science

Materials Science

Journal of Material Sciences & Engineering

Author(s): S LIU, D L OLSON

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The effects of inclusions on acicular ferrite formation in niobium microalloyed steel submerged arc weld metal were investigated using experimen- tal chemical reagent grade fluxes from the CaF 2 -CaO-Si0 2 system. Five different electrode wires were used. Direct rela- tionships between (1) weld metal oxygen and inclusion content and (2) inclusion density and weld metal microstructure were established in this investigation, explaining why it is possible to relate microstructure to weld metal oxygen content, although the inclusion density correlation would be fundamentally more correct. Finer particles and larger size variations were seen in the high oxygen weld metal. The mean particle

This article was published in SUPPLEMENT TO THE WELDING JOURNAL, and referenced in Journal of Material Sciences & Engineering

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