Investigation of microstructure, and mechanical properties of dissimilar high and ultra-high steel welded joints: application for extreme climate conditions

Authors

  • Dr. Francois Njock Bayock Department of Mechanical Engineering, ENSET Douala, University of Douala, P.O. Box: 1872, Douala, Cameroon https://orcid.org/0000-0002-7414-0271
  • Paul William Huisken Mejouyo Department of Mechanical Engineering, ENSET Douala, University of Douala, P.O. Box: 1872, Douala, Cameroon
  • Mbelle Samuel Bisong Department of Mechanical Engineering, ENSET Douala, University of Douala, P.O. Box: 1872, Douala, Cameroon
  • Paul Kah Department of Engineering Science, University West, Gustava Melius gata 2 S-461 32 Trollhättan, Sweden

DOI:

https://doi.org/10.56801/MME861

Keywords:

Bending test tensile test; EDS microscopy; high strength steel; extreme conditions; dissimilar welded joints.

Abstract

The paper focuses on the technical challenges of producing high-quality welds in modern extreme climate conditions structures, as welds are typically the weakest part of welded structures. Welding is particularly difficult with high-strength and ultra-high-strength steels (HSS-UHSS), which are used in structures to reduce weight. The microstructural compositions and mechanical properties of dissimilar high-strength and ultra-high-strength steels were investigated in this study, which was performed with three different heat inputs (0.8, 1.2, and 1.8 kJ/mm). There was a 2.3Cr, 0.4Si, and 2.8Mn increase on the FGHAZ microstructure of the S960QC side, confirming the temperature increase in that zone. Microhardness results show softening (160 HV5) in the E500 side's fine grain heat-affected zone (FGHAZ). Bending test results show that when the maximum force applied was 4000N, the fracture angle was close to 149°, and that the fracture zone was oriented exclusively in the FGHAZ, which had the higher softening zone. Tensile results show the fracture zone, which was oriented in the E500 side's FGHAZ. It was suggested that a heat input of 1.2 kJ/mm be applied to the weld dissimilar joint of TMCP E500-S960QC, which will be beneficial for extreme climate conditions.

 

References

D. A. Porter: IIW International Conference High-Strength Materials - Challenges and Applications, Helsinki, Finland 2-3 July 2015.

F. Njock Bayock, P. Kah, B. Mvola, and P. Layus: Rev Adv Mat Sci, 58 (2019) 38-49.

Crossreff

H. Chen, J. Zhang, J. Yang, F. Ye: Int J of Cor (2018) 7169681.

C. Fan, H. Wang, D. Ma: Adv in Mat Sci and Eng, 9 (2021), 9953319.

W. Phanitwong, A. Sontamino, S. Thipprakmas: Adv in Mat Sci and Eng (2016) 1634840.

Crossreff

Jr. Morris: Mat Res Society Symp, Proc, 539 (1999) 23-27.

Crossreff

I. Gorynin, E. Khlusova: Herald of the Russian Academy of Sciences, 80 (2011) 507-513.

Crossreff

O. Akselsen, E. Østby, C. Thaulow: Proc of ISOPE, USA, 2011.

C. Lee, H. Shin, K. Park: J of Const Steel Res 74 (2012) 134-139.

Crossreff

J-B. Yan, J. Liew, M-H. Zhang, J-Y. Wang: Mat and Des, 61 (2014) 150-159.

Crossreff

Y. Shin, S. Kang, H. Lee: Mat Sci Eng A, 434 (2006) 1-12.

Crossreff

C. Luru: Survey of structural steel used in major construction projects," Niobium Bearing Structural Steels, Ed. Steven Jansto and Jitendra Patel, TMS (The Minerals, Metals and Materials Society) (2010) 165-178.

J. Billingham, J. Spurrier, and P.J. Kilgallon: Review of the performance of high strength steels used offshore: Res Report 105 Cranfield University (2003) ISBN 0717622053.

W. Guo, D. Crowther, J.A. Francis, A. Thompson, and Z. Liu, L. Li: Mat Des, 85 (2015) 534-548.

Crossreff

P. Layus, P. Kah, V. Gezha: Part B: J of Eng Man, 232 (2016) 114-127.

Crossreff

T. Schaupp, W. Ernst, H. Spindler, T. Kannengiesser: Int. J. Hydrogen En, 45 (2020) 20080-20093.

Crossreff

J. Tomków, M. Landowski, D. Fydrych, G. Rogalski: Mar Str, 81 (2022) 103120.

Crossreff

P. Raghawendra, S. Singh, M. Gáspár: Metals, 12 (2022) 678.

Crossreff

ISO 6892-1: 2016. International Standard Test Methods for Tensile Testing of Metallic Materials; ISO 6892-1: 2016; ISO: Geneva, Switzerland, 2016.

SFS-EN ISO 7438:2016. International Standard Test Methods for Bending Testing of Metallic Materials; SFS-EN ISO 7438:2016; ISO: Geneva, Switzerland, 2016.

P. Layus; P. Kah; V. Ryabov; J. Martikainen: Inter. J. Of Mech. And Mat Ing (2016) 1-4.

F. Njock Bayock, P. Kah, P. Layus, V. Karkhin: Metals (355) 2019 9.

Crossreff

S. Talas: Mat Des, 31 (2010) 2649-2653.

Crossreff

S. Gao, L. Yuntao, L. Yang, W. Qiu: Mat Sci & Eng A, 720 (2018) 117-129.

Crossreff

F. Njock Bayock, P. Kah, A. Salminen, B. Mvola, X. Yang: Rev Adv Mat. Sci, 59 (2020) 54-66.

Crossreff

F. Njock Bayock, M. Kibong, S. Timba, N. Nji: Int J of Eng. & Tech (11) 2022, 1-9.

Crossreff

H. Tasalloti, P. Kah, J. Martikainen: Mat Char (2017) 29-41.

Crossreff

V. Kesti, A. Kaijalainen, A.Väisänen, A. Järvenpää, A. Määttä, A.-M. Arola, K. Mäntyjärvi, R. Ruoppa: Mat Sci For, 786 (2014) 818-824.

Crossreff

A. Deole, M. Barnett, M. Weiss: AIP Conf Proc 1960 (2018) 150003.

Crossreff

A. Anna-Maija, A. Kaijalainen, V. Kesti, L. Troive, J. Larkiola, D. Porter: Mat Today Com, 26 (2021) 101943.

Crossreff

A. Kaijalainen, V. Kesti, L. Troive, A. Arola, T. Liimatainen, D. Porter: Met Mat Trans A 47 (2016) 4175- 4188.

Crossreff

J. Gorka, S. Stano: Metals, 8 (2018) 1-15.

Crossreff

C. Löbbe, O. Hering, L. Hiegemann, A. Tekkaya: Materials (2016) 1-19.

W. Wu, P. Hu, G. Shen: Math Prob in Eng (2015).

T. Lahtinen, P. Vilaca, P. Peura, S. Mehtonen: Appl Sci, 9 (2019) 1031.

Crossreff

Downloads

Published

2022-12-31

How to Cite

Njock Bayock, Dr. Francois, Paul William Huisken Mejouyo, Mbelle Samuel Bisong, and Paul Kah. 2022. “Investigation of Microstructure, and Mechanical Properties of Dissimilar High and Ultra-High Steel Welded Joints: Application for Extreme Climate Conditions”. Metallurgical and Materials Engineering 28 (4):625-39. https://doi.org/10.56801/MME861.

Issue

Section

Research