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Formation of Mn-depleted zone in Ti-containing weld metals

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Abstract

Characteristics of non-metallic inclusions are studied using three shielded metal arc (SMA) weld metals which differ greatly in Ti content and are correlated with the acicular ferrite contents measured in the as-deposited weld microstructure. Correlation is found between the inclusion phases present and the amount of acicular ferrite formed in each weld. In the 5 ppm Ti weld, the weld microstructure is extremely low in acicular ferrite content and this microstructure can be correlated with the amorphous Mn-silicate phase that formed abundantly in the inclusions of this weld. At 410 and 580 ppm Ti, the weld microstructure contains very high amount of acicular ferrite, and this microstructure can be explained by the presence of a Mn-depleted zone (MDZ), likely formed associating with the formation of inclusions dominant with Ti2O3 and MnTiO3. The possible mechanisms for MDZ formation are discussed.

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References

  1. Evans GM (1996) Microstructure and properties of ferritic steel welds containing Ti and B. Weld J 75(8):251s–260s

    Google Scholar 

  2. Blais C, L’Esperance G, Evans GM (1999) Characterization of inclusions found in C-Mn steel welds containing titanium. Sci Tech Weld Join 4(3):143–150

    Article  Google Scholar 

  3. Yamada T, Terasaki H, Komizo Y (2009) Relation between inclusion surface and acicular ferrite in low carbon low alloy steel weld. ISIJ Int 49(7):1059–1062

    Article  Google Scholar 

  4. Takada A, Terasaki H, Komizo Y (2013) Effect of aluminum content on acicular ferrite formation in low carbon steel weld metals. Sci Tech Weld Join 18(2):91–97

    Article  Google Scholar 

  5. Seo JS, Kim HJ, Lee C (2013) Effect of Ti addition on weld microstructure and inclusion characteristics of bainitic GMA welds. ISIJ Int 53(5):880–886

    Article  Google Scholar 

  6. Lee T-K, Kim HJ, Kang BY, Hwang SK (2000) Effect of inclusion size on the nucleation of acicular ferrite in welds. ISIJ Int 40(12):1260–1268

    Article  Google Scholar 

  7. Park K-T, Hwang SW, Ji JH, Lee CH (2011) Inclusions nucleating intergranular polygonal ferrite and acicular ferrite in low alloyed carbon manganese steel welds. Met Mater Int 17(2):349–356

    Article  Google Scholar 

  8. Byun J-S, Shim J-H, Cho YW, Lee DN (2003) Non-metallic inclusion and intragranular nucleation of ferrite in ti-killed C-Mn steel. Acta Mater 51:1593–1606

    Article  Google Scholar 

  9. Ricks RA, Howell PR, Barritte GS (1982) The nature of acicular ferrite in HSLA steel weld metals. J Mater Sci 17:732–740

    Article  Google Scholar 

  10. Babu SS (2004) The mechanism of acicular ferrite in weld deposits. Curr Opin Solid State Mater Sci 8:267–278

    Article  Google Scholar 

  11. Sarma DS, Karasev AV, Jonsson PG (2009) On the role of non-metallic inclusions in the nucleation of acicular ferrite in steels. ISIJ Int 49(7):1063–1074

    Article  Google Scholar 

  12. Shim J-H, Cho YW, Chung SH, Shim J-D, Lee DN (1999) Nucleation of intragranular ferrite in low carbon steel. Acta Mater 47(9):2751–2760

    Article  Google Scholar 

  13. Shim J-H, Oh Y-J, Suh J-Y, Cho YW, Shim J-D, Byun J-S, Lee DN (2001) Ferrite nucleation potency of non-metallic inclusions in medium carbon steels. Acta Mater 49:2115–2122

    Article  Google Scholar 

  14. Gregg JM, Bhadeshia HKDH (1994) Bainite nucleation from mineral surfaces. Acta Metall Mater 42(10):3321–3330

    Article  Google Scholar 

  15. Gregg JM, Bhadeshia HKDH (1994) Titanium-rich mineral phases and the nucleation of bainite. Met Meter Trans A 25A(8):1603–1611

    Article  Google Scholar 

  16. Kang Y-B, Lee H-G (2010) Thermodynamic analysis of Mn-depleted zone near Ti oxide inclusions for intragranular nucleation of ferrite in steel. ISIJ Int 50(4):501–508

    Article  Google Scholar 

Download references

Acknowledgments

The authors would like to thank Mrs. K. H. Kim for her valuable support on TEM work. This work has been financially supported by KITECH.

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Authors and Affiliations

  1. Department of Advanced Materials & Chemical Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, Republic of Korea

    Kangmyung Seo

  2. Korea Institute of Industrial Technology, Advanced Welding & Joining R&BD Group, Gaetbeol-ro156, Yeonsu-gu, Incheon Metropolitan City, 406-840, Republic of Korea

    Young-min Kim & Hee Jin Kim

  3. West Kirby, Merseyside, UK

    G. M. Evans

  4. Division of Materials Science and Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, Republic of Korea

    Changhee Lee

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  1. Kangmyung Seo
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  2. Young-min Kim
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  3. G. M. Evans
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  4. Hee Jin Kim
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  5. Changhee Lee
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Correspondence to Hee Jin Kim.

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Doc. IIW-2519, recommended for publication by Commission II “Arc Welding and Filler Metals”.

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Seo, K., Kim, Ym., Evans, G.M. et al. Formation of Mn-depleted zone in Ti-containing weld metals. Weld World 59, 373–380 (2015). https://doi.org/10.1007/s40194-014-0207-y

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  • DOI: https://doi.org/10.1007/s40194-014-0207-y

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