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Effect of the notch location on the Charpy-V toughness results for robotic flux-cored arc welded multipass joints

  • Uğur Gürol ORCID logo EMAIL logo , Ozan Çoban

    Ozan Çoban, MSc, is a PhD candidate in the Department of Metallurgical and Materials Engineering at Istanbul Technical University. He has been working as research assistant in Department of Metallurgical and Materials Engineering at Istanbul Gedik University since 2015. His research interests are hydrometallurgy, combustion synthesis of advanced ceramics, nanoparticle synthesis in the field of extractive metallurgy; and microstructural characterization, failure analysis of cobalt-based superalloys, characterization of welded armour steels and mechanical metallurgy in the field of materials science.

     ORCID logo     , İbrahim Can Coşar

    İbrahim Can Coşar, born in 1994, recently graduated in Metallurgical and Materials Engineering Department from İstanbul Gedik University. He has been working as sales manager in a company that works on welding consumables for 7 years.

     ORCID logo     and Mustafa Koçak ORCID logo
Published/Copyright: September 6, 2022
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Materials Testing
From the journal Materials Testing Volume 64 Issue 9

Abstract

In this study, the effect of the notch locations on the Charpy-V toughness values of the all-welded joint obtained using robotic flux-cored arc welding was investigated with respect to microstructures at the notch locations. Charpy impact tests were performed through the thickness with notch location at the centerline as well as off-set regions of the weld metal in addition to the microhardness measurements conducted. The detailed weld metal characterization was conducted using a stereo microscope, optical microscope, and scanning electron microscope at the same location where the Charpy tests and microhardness tests were performed. The sub-zero impact toughness test results indicated that the columnar weld metal regions exhibited low toughness values while the centerline microstructure consisting of mainly reheated regions displayed much higher toughness values even at the test temperature of −60 °C, satisfying the toughness requirement of the requested 47 J value. It is concluded that a small variation of the through-thickness notch position may result in different toughness values for the same weld metal. On this basis, the notching procedure of the Charpy-V samples for the multi-pass weld metal should be conducted with care and obtained results should be explained with respective notch position and microstructure.

Keywords: all-weld metal; flux-cored arc welding; mechanical properties; microstructural characterization; notch position
Corresponding author: Uğur Gürol, Metallurgical and Materials Engineering Department, İstanbul Gedik University, İstanbul, Turkey, E-mail:

About the authors

Ozan Çoban

Ozan Çoban, MSc, is a PhD candidate in the Department of Metallurgical and Materials Engineering at Istanbul Technical University. He has been working as research assistant in Department of Metallurgical and Materials Engineering at Istanbul Gedik University since 2015. His research interests are hydrometallurgy, combustion synthesis of advanced ceramics, nanoparticle synthesis in the field of extractive metallurgy; and microstructural characterization, failure analysis of cobalt-based superalloys, characterization of welded armour steels and mechanical metallurgy in the field of materials science.

İbrahim Can Coşar

İbrahim Can Coşar, born in 1994, recently graduated in Metallurgical and Materials Engineering Department from İstanbul Gedik University. He has been working as sales manager in a company that works on welding consumables for 7 years.

Acknowledgement

Authors wish to acknowledge the valuable contributions of Mrs. Nurten Güleçyüz for assisting the robotic welding operations.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

References

[1] B. Cevik, “Analysis of welding groove configurations on strength of S275 structural steel welded by FCAW,” J. Polytech., vol. 21, no. 2, pp. 489–495, 2018, https://doi.org/10.2339/politeknik.389642.Search in Google Scholar

[2] H. T. Serindag, C. Tardu, I. O. Kircicek, and G. Çam, “A study on microstructural and mechanical properties of gas tungsten arc welded thick cryogenic 9% Ni alloy steel butt joint,” CIRP J. Manuf. Sci. Technol., vol. 37, pp. 1–10, 2022, https://doi.org/10.1016/j.cirpj.2021.12.006.Search in Google Scholar

[3] R. Yılmaz and M. Tümer, “The effect of shielding gases on the microstructure and toughness of stainless steels weldments by FCAW,” in 63rd Annual Assembly & International Conference of the International Institute of Welding, Proc. of AWST, Istanbul, Turkey, 2010, pp. 847–852 [Online]. Available at: https://www.gedikegitimvakfi.org.tr/wp-content/uploads/2013/12/FCAW.pdf.Search in Google Scholar

[4] D. Katherasan, P. Sathiya, and A. Raja, “Shielding gas effects on flux cored arc welding of AISI 316L (N) austenitic stainless steel joints,” Mater. Des., vol. 45, pp. 43–51, 2013, https://doi.org/10.1016/j.matdes.2012.09.012.Search in Google Scholar

[5] H. D. Gençkan, S. Keskinkılıç, E. Saracoğlu, and M. Koçak, “The comparison of microstructure and mechanical properties of flux-cored wires (FCW),” in 2010, 63rd Annual Assembly & International Conference of the International Institute of Welding, Proc. of AWST-2010, Istanbul, Turkey, 2010, pp. 19–24.Search in Google Scholar

[6] A. O’Brien, American Welding Society (AWS), Welding Handbook, Welding Processes Part 1, vol. 2, 9th ed., American Welding Society (AWS), Miami, 2004, pp. 210–254 [Online]. Available at: https://gedikegitimvakfi.org.tr/wp-content/uploads/2013/12/FCW.pdf.Search in Google Scholar

[7] R. Yılmaz and M. Tümer, “Microstructural studies and impact toughness of dissimilar weldments between AISI 316 L and AH36 steels by FCAW,” Int. J. Adv. Manuf. Technol., vol. 67, pp. 1433–1447, 2013, https://doi.org/10.1007/s00170-012-4579-0.Search in Google Scholar

[8] S. Mukhopadhyay and T. K. Pal, “Effect of shielding gas mixture on gas metal arc welding of HSLA steel using solid and flux-cored wires,” Int. J. Adv. Manuf. Technol., vol. 29, pp. 262–268, 2006, https://doi.org/10.1007/s00170-005-2510-7.Search in Google Scholar

[9] T. Mert, N. Gültekin, and A. Karaaslan, “Mechanical and microstructural evaluation of DMAG welding of structural steel,” Adv. Mech. Eng., vol. 7, no. 1, pp. 1–9, 2015, https://doi.org/10.1155/2014/371212.Search in Google Scholar

[10] T. Mert, N. Gultekin, and A. Karaaslan, “Fillet welding of austenitic stainless steel using the double channel shielding gas method with cored wire,” Mater. Test., vol. 57, no. 1, pp. 91–94, 2015, https://doi.org/10.3139/120.110682.Search in Google Scholar

[11] T. Mert, N. Gultekin, and A. Karaaslan, “Evaluation of double channel GMAW fillet welds of low carbon steel using solid wire,” Mater. Test., vol. 57, nos. 7–8, pp. 680–684, 2015, https://doi.org/10.3139/120.110765.Search in Google Scholar

[12] T. Mert, N. Gultekin, and A. Karaaslan, “Characteristics of austenitic stainless steel T-joints welded using the DMAG process with solid wire,” Mater. Test., vol. 58, no. 9, pp. 778–781, 2016, https://doi.org/10.3139/120.110915.Search in Google Scholar

[13] L. E. Stridh, “Flux cored arc welding,” in MIG Welding Guide, K. Weman and G. Linden, Eds., Cambridge, England, Woodhead Publishing, 2006, pp. 80–89.10.1533/9781845691479.1.80Search in Google Scholar

[14] Z. Zhang and R. A. Farrar, “Columnar grain development in C-Mn-Ni low-alloy weld metals and the influence of nickel,” J. Mater. Sci., vol. 30, pp. 5581–5588, 1995, https://doi.org/10.1007/BF00356690.Search in Google Scholar

[15] L. E. Svensson and B. Gretoft, “Microstructure and impact toughness of C-Mn weld metals,” Weld. Res. Suppl., vol. 69, no. 12, pp. 454–461, 1990.Search in Google Scholar

[16] U. Gürol, S. Dilibal, B. Turgut, and M. Koçak, “Characterization of a low-alloy steel component produced with wire arc additive manufacturing process using metal-cored wire,” Mater. Test., vol. 64, no. 6, pp. 755–767, 2022, https://doi.org/10.1515/mt-2021-2155.Search in Google Scholar

[17] V. Trindade, A. S. Guimarães, C. Payão, and P. Ronaldo, “Normalizing heat treatment effect on low alloy steel weld metals,” J. Braz. Soc. Mech. Sci. Eng., vol. 26, no. 1, pp. 62–66, 2004, https://doi.org/10.1590/S1678-58782004000100011.Search in Google Scholar

[18] X. Longyun, Y. Jian, and W. Ruizhi, “Influence of Al content on the inclusion-microstructure relationship in the heat-affected zone of a steel plate with Mg deoxidation after high-heat-input welding,” Metals, vol. 8, no. 12, pp. 1027–1040, 2018, https://doi.org/10.3390/met8121027.Search in Google Scholar

[19] Y. Xie, M. Song, F. Wang, Z. Xue, R. Xu, and W. Wang, “Influence of Al deoxidation on the formation of acicular ferrite in steel containing La,” High Temp. Mater. Process., vol. 39, no. 1, pp. 236–246, 2020, https://doi.org/10.1515/htmp-2020-0027.Search in Google Scholar

[20] D. J. Abson and R. J. Pargeter, “Factors influencing as-deposited strength, microstructure, and toughness of manual, metal arc welds suitable for C-Mn steel fabrications,” Int. Met. Rev., vol. 31, no. 1, pp. 141–196, 1986, https://doi.org/10.1179/imtr.1986.31.1.141.Search in Google Scholar

[21] G. M. Evans and N. Bailey, Metallurgy of Basic Weld Metal, Cambridge, Abington Publishing, 1997.10.1533/9781845698850Search in Google Scholar

[22] D. J. Abson, “Acicular ferrite and bainite in C–Mn and low alloy steel arc weld metals,” Sci. Technol. Weld. Join., vol. 23, no. 8, pp. 635–648, 2018, https://doi.org/10.1080/13621718.2018.1461992.Search in Google Scholar

[23] Y. Shao, C. Liu, Z. Yan, H. Li, and Y. Li, “Formation mechanism and control methods of acicular ferrite in HSLA steels: a review,” J. Mater. Sci. Technol. Res., vol. 34, no. 5, pp. 737–744, 2018, https://doi.org/10.1016/j.jmst.2017.11.020.Search in Google Scholar

[24] R. A. Farrar and P. L. Harrison, “Acicular ferrite in carbon-manganese weld metals: an overview,” J. Mater. Sci., vol. 22, pp. 3812–3820, 1987, https://doi.org/10.1007/BF01133327.Search in Google Scholar

[25] H. H. Wang, Z. Tong, and G. M. Evans, “Systematic role of Mn and Ti on microstructure and impact properties of reheated C-Mn weld metals,” in 2018, Conference: Intermediate meeting of IIW Sub.Comm.2C, Doc.II-C-549-18, Genoa, 2018.10.1145/3190645Search in Google Scholar

[26] C. Han, Z. Cai, M. Fan, X. Liu, K. Li, and J. Pan, “Microstructure characterization of SAW and TIG welded 25Cr2Ni2MoV rotor steel metal,” Metals, vol. 10, no. 5, pp. 603–615, 2020, https://doi.org/10.603.10.3390/met10050603.10.3390/met10050603Search in Google Scholar

[27] R. Maksuti, “Impact of the acicular ferrite on the Charpy V-notch toughness of submerged arc weld metal deposits,” Int. J. Sci. Eng. Res., vol. 7, no. 8, pp. 1149–1155, 2016.Search in Google Scholar

[28] Y. Kang, G. Park, S. Jeong, and C. Lee, “Correlation between microstructure and low-temperature impact toughness of simulated reheated zones in the multi-pass weld metal of high-strength steel,” Metall. Mater. Trans., vol. 49A, pp. 177–186, 2018, https://doi.org/10.1007/s11661-017-4384-3.Search in Google Scholar

[29] K. Cerjak, E. Letofsky, X. Pitoiset, A. Seiringer, and G. M. Evans, “The effect of microstructure on the toughness of C-Mn multirun weld deposit,” in 1995, Proceedings of the 4th International Conference on Trends in Welding Research, Gatlinburg, 1995, pp. 535–540.Search in Google Scholar

[30] R. Cao, J. J. Yuan, Z. G. Xiao, et al.., “Sources of variability and lower values in toughness measurements of weld metals,” J. Mater. Eng. Perform., vol. 26, no. 6, pp. 2472–2483, 2017, https://doi.org/10.1007/s11665-017-2686-7.Search in Google Scholar

[31] H. Y. Song, G. M. Evans, and S. S. Babu, “Effect of microstructural heterogeneities on scatter of toughness in multi-pass weld metal of C–Mn steels,” Sci. Technol. Weld. Join., vol. 19, no. 5, pp. 376–384, 2014, https://doi.org/10.1179/1362171814Y.0000000194.Search in Google Scholar

[32] A. Kazakov, E. Kazakova, M. Karasev, and D. Lubochko, “Structural investigation and control of multi-pass gas-shielded flux-Cored arc weldments,” Mater. Perform. Char., vol. 6, no. 3, pp. 256–270, 2017, https://doi.org/10.1520/MPC20160035.Search in Google Scholar

[33] P. Haslberger, W. Ernst, C. Schneider, S. Holly, and R. Schnitzer, “Influence of inhomogeneity on several length scales on the local mechanical properties in V-alloyed all-weld metal,” Weld. World, vol. 62, no. 6, pp. 1153–1158, 2018, https://doi.org/10.1007/s40194-018-0636-0.Search in Google Scholar

[34] J. C. F. Jorge, L. F. G. Souza, and J. M. A. Rebello, “The effect of chromium on the microstructure/toughness relationship of C-Mn weld metal deposits,” Mater. Charact., vol. 47, nos. 3–4, pp. 195–205, 2001, https://doi.org/10.1016/S1044-5803(01)00168-1.Search in Google Scholar

[35] Y. Kang, K. Han, J. Park, and C. Lee, “Variation in the chemical driving force for intragranular nucleation in the multi-pass weld metal of Ti-Containing high-strength low-alloy steel,” Metall. Mater. Trans., vol. 46, pp. 3581–3591, 2015, https://doi.org/10.1007/s11661-015-2958-5.Search in Google Scholar

[36] C. F. Jorge, L. F. G. Souza, L. S. Araújo, I. S. Bott, M. C. Mendes, and G. M. Evans, “Microstructure and toughness of C-Mn steel submerged-arc weld deposits, with and without titanium addition,” in 2019 IIW Annual Assembly, Bratislava, Czech Republic, 2019. IIW Doc. IX-2674-19.Search in Google Scholar

[37] P. Mohseni, J. K. Solberg, M. Karlsen, O. M. Akselsen, and E. Østbyi, “Cleavage fracture initiation at M-A constituents in intercritically coarse grained heat-affected zone of a HSLA steel,” Metall. Mater. Trans., vol. 45, no. 1, pp. 384–394, 2014, https://doi.org/10.1007/s11661-013-2110-3.Search in Google Scholar

[38] M. Mohammadijoo, J. Valloton, L. Collins, H. Henein, and D. G. Ivey, “Characterization of martensite-austenite constituents and micro-hardness in intercritical reheated and coarse-grained heat affected zones of API X70 HSLA steel,” Mater. Charact., vol. 142, pp. 321–331, 2018, https://doi.org/10.1016/j.matchar.2018.05.057.Search in Google Scholar

[39] X. Wang, C. Shang, and X. Wang, “Characterization of the multi-pass weld metal and the effect of post-weld heat treatment on its microstructure and toughness,” in 2015 HSLA Steels 2015, Microalloying 2015 & Offshore Engineering Steels, Cham, Springer, 2015.10.1002/9781119223399.ch57Search in Google Scholar

[40] F. Matsuda, I. Kenji, Y. Fukada, et al.., “Review of mechanical and metallurgical investigations of M-A constituent in welded joint in Japan,” Weld. World, vol. 37, no. 3, pp. 134–154, 1996.Search in Google Scholar

[41] X. Luo, X. Chen, T. Wang, S. Pan, and Z. Wang, “Effect of morphologies of martensite–austenite constituents on impact toughness in intercritically reheated coarse-grained heat-affected zone of HSLA steel,” Mater. Sci. Eng. A, vol. 710, pp. 192–199, 2018, https://doi.org/10.1016/j.msea.2017.10.079.Search in Google Scholar

[42] J. Zhang, W. Xin, G. Luo, R. Wang, and Q. Meng, “Significant influence of welding heat input on the microstructural characteristics and mechanical properties of the simulated CGHAZ in high nitrogen V-alloyed steel,” High Temp. Mater. Process., vol. 39, pp. 33–44, 2020, https://doi.org/10.1515/htmp-2020-0003.Search in Google Scholar

[43] Y. Kitani, R. Ikeda, M. Ono, and K. Ikeuchi, “Improvement of weld metal toughness in high heat input electro-slag welding of flow carbon steel,” Weld. World, vol. 53, no. 3/4, pp. 57–63, 2009, https://doi.org/10.1007/BF03266704.Search in Google Scholar
Published Online: 2022-09-06
Published in Print: 2022-09-27

© 2022 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Effect of local heat treatment on residual stresses in an in-service repair welded pipeline
  3. Tension-compression asymmetry of quadruple CuCoNiBe alloys processed by high-temperature multi-pass equal channel angular pressing (ECAP)
  4. Structural properties of sputter-deposited nanocrystalline Ni thin films
  5. Effect of the notch location on the Charpy-V toughness results for robotic flux-cored arc welded multipass joints
  6. Effect of micro and nano-sized ZrSiO4 particles on the friction and wear properties of polymer matrix composites
  7. Evaluation of the plastic deformation behavior of modified 100Cr6 steels with increased fractions of retained austenite using cyclic indentation tests
  8. Thermomechanical evaluation of a glass-epoxy composite for astronomical optical devices
  9. Artificial gorilla troops algorithm for the optimization of a fine plate heat exchanger
  10. Metallurgical properties of boride layers formed in pack boronized cementation steel
  11. Numerical study of composite plates jointed adhesively with interspaced and interspaced double-lap joint subject to tensile load
  12. Thermal analysis and performance testing of heavy load truck composite brake linings
  13. Vibration characteristics of mineral composite beams by experimental modal test method
  14. Overview of friction welding processes for different metallic materials
https://doi.org/10.1515/mt-2022-0113
Keywords for this article
all-weld metal; flux-cored arc welding; mechanical properties; microstructural characterization; notch position

Articles in the same Issue

  1. Frontmatter
  2. Effect of local heat treatment on residual stresses in an in-service repair welded pipeline
  3. Tension-compression asymmetry of quadruple CuCoNiBe alloys processed by high-temperature multi-pass equal channel angular pressing (ECAP)
  4. Structural properties of sputter-deposited nanocrystalline Ni thin films
  5. Effect of the notch location on the Charpy-V toughness results for robotic flux-cored arc welded multipass joints
  6. Effect of micro and nano-sized ZrSiO4 particles on the friction and wear properties of polymer matrix composites
  7. Evaluation of the plastic deformation behavior of modified 100Cr6 steels with increased fractions of retained austenite using cyclic indentation tests
  8. Thermomechanical evaluation of a glass-epoxy composite for astronomical optical devices
  9. Artificial gorilla troops algorithm for the optimization of a fine plate heat exchanger
  10. Metallurgical properties of boride layers formed in pack boronized cementation steel
  11. Numerical study of composite plates jointed adhesively with interspaced and interspaced double-lap joint subject to tensile load
  12. Thermal analysis and performance testing of heavy load truck composite brake linings
  13. Vibration characteristics of mineral composite beams by experimental modal test method
  14. Overview of friction welding processes for different metallic materials
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