Acicular Ferrite Aspect Ratio Variations in the Weld Metal of EH550 Offshore Engineering Steel Processed by MnO–SiO2–TiO2 Fluxes

Junjie Ma; Ming Zhong; Yanyun Zhang; Xiaobo Yuan; Imants Kaldre; Ishwar Kapoor; Peter Janos Szabo; Cong Wang

doi:10.1007/s11663-025-03597-6

Acicular Ferrite Aspect Ratio Variations in the Weld Metal of EH550 Offshore Engineering Steel Processed by MnO–SiO₂–TiO₂ Fluxes

Junjie Ma
, Ming Zhong
, Yanyun Zhang
, Xiaobo Yuan
, Imants Kaldre
, Ishwar Kapoor
, Peter Janos Szabo
, Cong Wang^*

^*Corresponding author for this work

Institute of Physics

Northeastern University China
University of Warwick
Budapest University of Technology and Economics

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

1 Citation (Scopus)

Abstract

MnO–SiO₂–TiO₂ fluxes of known compositions have been applied to manufacture submerged arc welding of EH550 offshore engineering steel. It has been found that the volume fraction of acicular ferrite (AF) decreases slightly from 60 to 52 pct with an increase in TiO₂. Concurrently, morphologies of AFs transform from typical bulky to slender shape, resulting in a striking increase in aspect ratio from 5.62 to 8.01, boding well toward enhanced fracture toughness for the weld metal.

Original language	English
Pages (from-to)	3264-3270
Number of pages	7
Journal	Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume	56
Issue number	4
DOIs	https://doi.org/10.1007/s11663-025-03597-6
Publication status	Published - Aug 2025

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Ma, J., Zhong, M., Zhang, Y., Yuan, X., Kaldre, I., Kapoor, I., Szabo, P. J., & Wang, C. (2025). Acicular Ferrite Aspect Ratio Variations in the Weld Metal of EH550 Offshore Engineering Steel Processed by MnO–SiO₂–TiO₂ Fluxes. Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 56(4), 3264-3270. https://doi.org/10.1007/s11663-025-03597-6

@article{8259c8db8a474f949dd6a1410a7248d4,

title = "Acicular Ferrite Aspect Ratio Variations in the Weld Metal of EH550 Offshore Engineering Steel Processed by MnO–SiO2–TiO2 Fluxes",

abstract = "MnO–SiO2–TiO2 fluxes of known compositions have been applied to manufacture submerged arc welding of EH550 offshore engineering steel. It has been found that the volume fraction of acicular ferrite (AF) decreases slightly from 60 to 52 pct with an increase in TiO2. Concurrently, morphologies of AFs transform from typical bulky to slender shape, resulting in a striking increase in aspect ratio from 5.62 to 8.01, boding well toward enhanced fracture toughness for the weld metal.",

author = "Junjie Ma and Ming Zhong and Yanyun Zhang and Xiaobo Yuan and Imants Kaldre and Ishwar Kapoor and Szabo, \{Peter Janos\} and Cong Wang",

note = "Publisher Copyright: {\textcopyright} The Minerals, Metals \& Materials Society and ASM International 2025.",

year = "2025",

month = aug,

doi = "10.1007/s11663-025-03597-6",

language = "English",

volume = "56",

pages = "3264--3270",

journal = "Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science",

issn = "1073-5615",

publisher = "Springer",

number = "4",

}

Ma, J, Zhong, M, Zhang, Y, Yuan, X, Kaldre, I, Kapoor, I, Szabo, PJ & Wang, C 2025, 'Acicular Ferrite Aspect Ratio Variations in the Weld Metal of EH550 Offshore Engineering Steel Processed by MnO–SiO₂–TiO₂ Fluxes', Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, vol. 56, no. 4, pp. 3264-3270. https://doi.org/10.1007/s11663-025-03597-6

Acicular Ferrite Aspect Ratio Variations in the Weld Metal of EH550 Offshore Engineering Steel Processed by MnO–SiO₂–TiO₂ Fluxes. / Ma, Junjie; Zhong, Ming; Zhang, Yanyun et al.
In: Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, Vol. 56, No. 4, 08.2025, p. 3264-3270.

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

TY - JOUR

T1 - Acicular Ferrite Aspect Ratio Variations in the Weld Metal of EH550 Offshore Engineering Steel Processed by MnO–SiO2–TiO2 Fluxes

AU - Ma, Junjie

AU - Zhong, Ming

AU - Zhang, Yanyun

AU - Yuan, Xiaobo

AU - Kaldre, Imants

AU - Kapoor, Ishwar

AU - Szabo, Peter Janos

AU - Wang, Cong

PY - 2025/8

Y1 - 2025/8

N2 - MnO–SiO2–TiO2 fluxes of known compositions have been applied to manufacture submerged arc welding of EH550 offshore engineering steel. It has been found that the volume fraction of acicular ferrite (AF) decreases slightly from 60 to 52 pct with an increase in TiO2. Concurrently, morphologies of AFs transform from typical bulky to slender shape, resulting in a striking increase in aspect ratio from 5.62 to 8.01, boding well toward enhanced fracture toughness for the weld metal.

AB - MnO–SiO2–TiO2 fluxes of known compositions have been applied to manufacture submerged arc welding of EH550 offshore engineering steel. It has been found that the volume fraction of acicular ferrite (AF) decreases slightly from 60 to 52 pct with an increase in TiO2. Concurrently, morphologies of AFs transform from typical bulky to slender shape, resulting in a striking increase in aspect ratio from 5.62 to 8.01, boding well toward enhanced fracture toughness for the weld metal.

UR - https://www.scopus.com/pages/publications/105006927186

U2 - 10.1007/s11663-025-03597-6

DO - 10.1007/s11663-025-03597-6

M3 - Article

AN - SCOPUS:105006927186

SN - 1073-5615

VL - 56

SP - 3264

EP - 3270

JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science

JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science

IS - 4

ER -

Acicular Ferrite Aspect Ratio Variations in the Weld Metal of EH550 Offshore Engineering Steel Processed by MnO–SiO₂–TiO₂ Fluxes

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