Effects of dilution on the hardness and residual stresses in multipass steel weldmentsCitation formats

  • External authors:
  • C.j. Hamelin
  • G. Obasi
  • M.c. Smith

Standard

Effects of dilution on the hardness and residual stresses in multipass steel weldments. / Sun, Y.l.; Hamelin, C.j.; Vasileiou, A.n.; Xiong, Q.; Flint, T.f.; Obasi, G.; Francis, J.a.; Smith, M.c.

In: International Journal of Pressure Vessels and Piping, 18.07.2020, p. 104154.

Research output: Contribution to journalArticlepeer-review

Harvard

APA

Vancouver

Author

Sun, Y.l. ; Hamelin, C.j. ; Vasileiou, A.n. ; Xiong, Q. ; Flint, T.f. ; Obasi, G. ; Francis, J.a. ; Smith, M.c. / Effects of dilution on the hardness and residual stresses in multipass steel weldments. In: International Journal of Pressure Vessels and Piping. 2020 ; pp. 104154.

Bibtex

@article{e7741179fe8840c0b878545f4a4ee184,
title = "Effects of dilution on the hardness and residual stresses in multipass steel weldments",
abstract = "A thermal-metallurgical-mechanical model was developed to study the effects of dilution in each weld pass for multipass gas tungsten arc and submerged arc welding in low alloy steel (i.e. SA508) plates. Hardness distributions and residual stresses were measured on the transverse sections perpendicular to the welding direction of the manufactured weldments. The predicted hardness and residual stresses were compared with the measurement data and shown to be reasonably accurate. The results showed that dilution can significantly affect both the hardness and the residual stress field in the weld metal. It was found that, for the base and filler materials used, increased dilution led to greater weld-metal hardness and reduced the magnitude of tensile stress or promoted compressive stress in the as-deposited and reheated weld metals. This mechanical behaviour is associated with the tendency for diluted weld metal to experience delayed austenite decomposition, owing to the high hardenability of SA508 steel relative to the filler materials used. Although dilution is irrelevant for the hardness of the base material and its transformation products adjacent to the weld metal, it affected the full-field residual stresses via the equilibrium interaction between the stresses in the base and weld metals.",
keywords = "fusion welding, molten mixture, phase transformation, hardness, residual stress, modelling",
author = "Y.l. Sun and C.j. Hamelin and A.n. Vasileiou and Q. Xiong and T.f. Flint and G. Obasi and J.a. Francis and M.c. Smith",
year = "2020",
month = jul,
day = "18",
doi = "10.1016/j.ijpvp.2020.104154",
language = "English",
pages = "104154",
journal = "International Journal of Pressure Vessels and Piping",
issn = "0308-0161",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Effects of dilution on the hardness and residual stresses in multipass steel weldments

AU - Sun, Y.l.

AU - Hamelin, C.j.

AU - Vasileiou, A.n.

AU - Xiong, Q.

AU - Flint, T.f.

AU - Obasi, G.

AU - Francis, J.a.

AU - Smith, M.c.

PY - 2020/7/18

Y1 - 2020/7/18

N2 - A thermal-metallurgical-mechanical model was developed to study the effects of dilution in each weld pass for multipass gas tungsten arc and submerged arc welding in low alloy steel (i.e. SA508) plates. Hardness distributions and residual stresses were measured on the transverse sections perpendicular to the welding direction of the manufactured weldments. The predicted hardness and residual stresses were compared with the measurement data and shown to be reasonably accurate. The results showed that dilution can significantly affect both the hardness and the residual stress field in the weld metal. It was found that, for the base and filler materials used, increased dilution led to greater weld-metal hardness and reduced the magnitude of tensile stress or promoted compressive stress in the as-deposited and reheated weld metals. This mechanical behaviour is associated with the tendency for diluted weld metal to experience delayed austenite decomposition, owing to the high hardenability of SA508 steel relative to the filler materials used. Although dilution is irrelevant for the hardness of the base material and its transformation products adjacent to the weld metal, it affected the full-field residual stresses via the equilibrium interaction between the stresses in the base and weld metals.

AB - A thermal-metallurgical-mechanical model was developed to study the effects of dilution in each weld pass for multipass gas tungsten arc and submerged arc welding in low alloy steel (i.e. SA508) plates. Hardness distributions and residual stresses were measured on the transverse sections perpendicular to the welding direction of the manufactured weldments. The predicted hardness and residual stresses were compared with the measurement data and shown to be reasonably accurate. The results showed that dilution can significantly affect both the hardness and the residual stress field in the weld metal. It was found that, for the base and filler materials used, increased dilution led to greater weld-metal hardness and reduced the magnitude of tensile stress or promoted compressive stress in the as-deposited and reheated weld metals. This mechanical behaviour is associated with the tendency for diluted weld metal to experience delayed austenite decomposition, owing to the high hardenability of SA508 steel relative to the filler materials used. Although dilution is irrelevant for the hardness of the base material and its transformation products adjacent to the weld metal, it affected the full-field residual stresses via the equilibrium interaction between the stresses in the base and weld metals.

KW - fusion welding

KW - molten mixture

KW - phase transformation

KW - hardness

KW - residual stress

KW - modelling

U2 - 10.1016/j.ijpvp.2020.104154

DO - 10.1016/j.ijpvp.2020.104154

M3 - Article

SP - 104154

JO - International Journal of Pressure Vessels and Piping

JF - International Journal of Pressure Vessels and Piping

SN - 0308-0161

ER -