Coarsening of oxide inclusions in low alloy steel welds

S. S. Babu; S. A. David; T. DebRoy

doi:10.1179/stw.1996.1.1.17

Coarsening of oxide inclusions in low alloy steel welds

S. S. Babu, S. A. David, T. DebRoy

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Oxide inclusions that form in low alloy steel weld metal influence the microstructure development. This work investigates the mechanisms of inclusion coarsening in low alloy steel melts considering fluid flow in the melt. Controlled isothermal localised melting experiments on low alloy steel weld metal samples showed rapid inclusion coarsening as a result of collision and coalescence. The average diameter of the inclusions increased rapidly, resulting in a decrease in the overall number density of the inclusions as a function of holding time. These results are examined to understand weld metal inclusion formation in the presence of convective fluid flow. Investigation of the feasibility of oxide formation showed no oxidation reaction in the solid state.

Original language	English (US)
Pages (from-to)	17-27
Number of pages	11
Journal	Science and Technology of Welding and Joining
Volume	1
Issue number	1
DOIs	https://doi.org/10.1179/stw.1996.1.1.17
State	Published - 1996

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics

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10.1179/stw.1996.1.1.17

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title = "Coarsening of oxide inclusions in low alloy steel welds",

abstract = "Oxide inclusions that form in low alloy steel weld metal influence the microstructure development. This work investigates the mechanisms of inclusion coarsening in low alloy steel melts considering fluid flow in the melt. Controlled isothermal localised melting experiments on low alloy steel weld metal samples showed rapid inclusion coarsening as a result of collision and coalescence. The average diameter of the inclusions increased rapidly, resulting in a decrease in the overall number density of the inclusions as a function of holding time. These results are examined to understand weld metal inclusion formation in the presence of convective fluid flow. Investigation of the feasibility of oxide formation showed no oxidation reaction in the solid state.",

author = "Babu, {S. S.} and David, {S. A.} and T. DebRoy",

note = "Funding Information: ACKNOWLEDGEMENTS The authors thank Drs G. M. Goodwin and S. Viswanathan for their helpful comments, Mr R. W. Reed for his help in making welds and Gleeble experiments, and Ms Kathy Spence for editing the manuscript. Research is sponsored by the Division of Materials Sciences, US Department of Energy, under contract DE-AC05-960R22464 with Lockheed Martin Energy Research Corporation.",

year = "1996",

doi = "10.1179/stw.1996.1.1.17",

language = "English (US)",

volume = "1",

pages = "17--27",

journal = "Science and Technology of Welding and Joining",

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T1 - Coarsening of oxide inclusions in low alloy steel welds

AU - Babu, S. S.

AU - David, S. A.

AU - DebRoy, T.

N1 - Funding Information: ACKNOWLEDGEMENTS The authors thank Drs G. M. Goodwin and S. Viswanathan for their helpful comments, Mr R. W. Reed for his help in making welds and Gleeble experiments, and Ms Kathy Spence for editing the manuscript. Research is sponsored by the Division of Materials Sciences, US Department of Energy, under contract DE-AC05-960R22464 with Lockheed Martin Energy Research Corporation.

PY - 1996

Y1 - 1996

N2 - Oxide inclusions that form in low alloy steel weld metal influence the microstructure development. This work investigates the mechanisms of inclusion coarsening in low alloy steel melts considering fluid flow in the melt. Controlled isothermal localised melting experiments on low alloy steel weld metal samples showed rapid inclusion coarsening as a result of collision and coalescence. The average diameter of the inclusions increased rapidly, resulting in a decrease in the overall number density of the inclusions as a function of holding time. These results are examined to understand weld metal inclusion formation in the presence of convective fluid flow. Investigation of the feasibility of oxide formation showed no oxidation reaction in the solid state.

AB - Oxide inclusions that form in low alloy steel weld metal influence the microstructure development. This work investigates the mechanisms of inclusion coarsening in low alloy steel melts considering fluid flow in the melt. Controlled isothermal localised melting experiments on low alloy steel weld metal samples showed rapid inclusion coarsening as a result of collision and coalescence. The average diameter of the inclusions increased rapidly, resulting in a decrease in the overall number density of the inclusions as a function of holding time. These results are examined to understand weld metal inclusion formation in the presence of convective fluid flow. Investigation of the feasibility of oxide formation showed no oxidation reaction in the solid state.

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Coarsening of oxide inclusions in low alloy steel welds

Abstract

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