Microstructure and mechanical properties of high-strength steel welding consumables with a minimum yield strength of 1100 MPa

Research output: Contribution to journalArticleResearchpeer-review

Standard

Microstructure and mechanical properties of high-strength steel welding consumables with a minimum yield strength of 1100 MPa. / Haslberger, Phillip; Holly, Sylvia; Ernst, Wolfgang et al.
In: Journal of materials science, Vol. 53.2018, No. May, 24.01.2018, p. 6968-6979.

Research output: Contribution to journalArticleResearchpeer-review

Bibtex - Download

@article{0723869b85e14558b756b1b66ed00cb3,
title = "Microstructure and mechanical properties of high-strength steel welding consumables with a minimum yield strength of 1100 MPa",
abstract = "Welded high-strength steel components have great potential for use in lightweight constructions or highly loaded structures. Welding of steels with a yield strength of more than 1100 MPa is particularly challenging because of the toughness requirements for the weld metal. Currently, a new generation of welding consumables with a minimum yield strength of 1100 MPa has been developed. Based on electron backscatter diffraction and atom probe tomography, a concept for toughening and strengthening of all-weld metal samples was deployed. Starting from a martensitic all-weld metal sample with an approximate yield strength of 1000 MPa, a reduction in manganese and silicon content resulted in a refined microstructure with a lower prior austenite grain size and effective grain size. Furthermore, a higher average grain boundary misorientation was measured, which influences the toughness positively. An addition of vanadium caused the formation of vanadium-rich clusters, which increased the strength of the all-weld metal significantly. With a combination of these two mechanisms, it was possible to produce an all-weld metal sample with the required yield strength of more than 1100 MPa and an acceptable toughness.",
author = "Phillip Haslberger and Sylvia Holly and Wolfgang Ernst and Ronald Schnitzer",
year = "2018",
month = jan,
day = "24",
doi = "10.1007/s10853-018-2042-9",
language = "English",
volume = "53.2018",
pages = "6968--6979",
journal = "Journal of materials science",
issn = "0022-2461",
publisher = "Springer Netherlands",
number = "May",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Microstructure and mechanical properties of high-strength steel welding consumables with a minimum yield strength of 1100 MPa

AU - Haslberger, Phillip

AU - Holly, Sylvia

AU - Ernst, Wolfgang

AU - Schnitzer, Ronald

PY - 2018/1/24

Y1 - 2018/1/24

N2 - Welded high-strength steel components have great potential for use in lightweight constructions or highly loaded structures. Welding of steels with a yield strength of more than 1100 MPa is particularly challenging because of the toughness requirements for the weld metal. Currently, a new generation of welding consumables with a minimum yield strength of 1100 MPa has been developed. Based on electron backscatter diffraction and atom probe tomography, a concept for toughening and strengthening of all-weld metal samples was deployed. Starting from a martensitic all-weld metal sample with an approximate yield strength of 1000 MPa, a reduction in manganese and silicon content resulted in a refined microstructure with a lower prior austenite grain size and effective grain size. Furthermore, a higher average grain boundary misorientation was measured, which influences the toughness positively. An addition of vanadium caused the formation of vanadium-rich clusters, which increased the strength of the all-weld metal significantly. With a combination of these two mechanisms, it was possible to produce an all-weld metal sample with the required yield strength of more than 1100 MPa and an acceptable toughness.

AB - Welded high-strength steel components have great potential for use in lightweight constructions or highly loaded structures. Welding of steels with a yield strength of more than 1100 MPa is particularly challenging because of the toughness requirements for the weld metal. Currently, a new generation of welding consumables with a minimum yield strength of 1100 MPa has been developed. Based on electron backscatter diffraction and atom probe tomography, a concept for toughening and strengthening of all-weld metal samples was deployed. Starting from a martensitic all-weld metal sample with an approximate yield strength of 1000 MPa, a reduction in manganese and silicon content resulted in a refined microstructure with a lower prior austenite grain size and effective grain size. Furthermore, a higher average grain boundary misorientation was measured, which influences the toughness positively. An addition of vanadium caused the formation of vanadium-rich clusters, which increased the strength of the all-weld metal significantly. With a combination of these two mechanisms, it was possible to produce an all-weld metal sample with the required yield strength of more than 1100 MPa and an acceptable toughness.

U2 - 10.1007/s10853-018-2042-9

DO - 10.1007/s10853-018-2042-9

M3 - Article

VL - 53.2018

SP - 6968

EP - 6979

JO - Journal of materials science

JF - Journal of materials science

SN - 0022-2461

IS - May

ER -