In situ X-ray observations of transient states in arc weld poolsCitation formats

Standard

In situ X-ray observations of transient states in arc weld pools. / Wu, Fan; Falch, Ken Vidar; Drakopoulous, Michael ; Mirihanage, Wajira.

In: IOP Conference Series: Materials Science and Engineering, Vol. 861, No. 1, 012071, 22.06.2020.

Research output: Contribution to journalArticlepeer-review

Harvard

Wu, F, Falch, KV, Drakopoulous, M & Mirihanage, W 2020, 'In situ X-ray observations of transient states in arc weld pools', IOP Conference Series: Materials Science and Engineering, vol. 861, no. 1, 012071. https://doi.org/10.1088/1757-899X/861/1/012071

APA

Wu, F., Falch, K. V., Drakopoulous, M., & Mirihanage, W. (2020). In situ X-ray observations of transient states in arc weld pools. IOP Conference Series: Materials Science and Engineering, 861(1), [012071]. https://doi.org/10.1088/1757-899X/861/1/012071

Vancouver

Wu F, Falch KV, Drakopoulous M, Mirihanage W. In situ X-ray observations of transient states in arc weld pools. IOP Conference Series: Materials Science and Engineering. 2020 Jun 22;861(1). 012071. https://doi.org/10.1088/1757-899X/861/1/012071

Author

Wu, Fan ; Falch, Ken Vidar ; Drakopoulous, Michael ; Mirihanage, Wajira. / In situ X-ray observations of transient states in arc weld pools. In: IOP Conference Series: Materials Science and Engineering. 2020 ; Vol. 861, No. 1.

Bibtex

@article{647b525cc2aa422a922a392e5f7b645d,
title = "In situ X-ray observations of transient states in arc weld pools",
abstract = "Metallic alloys coalesce via extremely rapid melting and subsequent solidification to form fusion welded joints. The melt pool evolution in melting and solidification sequences during the welding process determines the formation of the final weld joint shape, microstructure and defects. The scientific insight on weld pool evolution and related phenomena can be a key contribution to enhance structural integrity and resilience of the welded structures or components. However, inherent complexity with multi-physics phenomena, associated high temperatures and the rapidness of the processes make direct experimental investigation of welding is extremely demanding. Thus, internal flow behaviour during welding or other melt-pool-based metal processing such as additive manufacturing remains unclear and hinders progression to process optimisation. In this contribution we report the observation of melt pool dynamics that take place during electric arc welding, obtained through in situ synchrotron imaging at millisecond scale. The analysis flow patterns along with the quantified weld pool surface dynamics revealed us to how different contributing forces dictate the flow conditions over the distinct durations of the relatively short existence of the liquid phase. Our preliminary results suggest the existence of arc, surface tension and gravity dominant regimes during the evaluation of the weld pool. Further, we present our observations on how different welding parameters influence these regimes and develop into different transient conditions.",
author = "Fan Wu and Falch, {Ken Vidar} and Michael Drakopoulous and Wajira Mirihanage",
note = "Funding Information: This work is supported by the EPSRC (UK) grant EP/P02680X/1 and EP/R031711/1. Diamond Light Source is acknowledged for granting the beamtime at I12 (EE EE20611-1). Publisher Copyright: {\textcopyright} Published under licence by IOP Publishing Ltd.",
year = "2020",
month = jun,
day = "22",
doi = "10.1088/1757-899X/861/1/012071",
language = "English",
volume = "861",
journal = "IOP Conference Series: Materials Science and Engineering",
issn = "1757-8981",
publisher = "IOP Publishing Ltd",
number = "1",

}

RIS

TY - JOUR

T1 - In situ X-ray observations of transient states in arc weld pools

AU - Wu, Fan

AU - Falch, Ken Vidar

AU - Drakopoulous, Michael

AU - Mirihanage, Wajira

N1 - Funding Information: This work is supported by the EPSRC (UK) grant EP/P02680X/1 and EP/R031711/1. Diamond Light Source is acknowledged for granting the beamtime at I12 (EE EE20611-1). Publisher Copyright: © Published under licence by IOP Publishing Ltd.

PY - 2020/6/22

Y1 - 2020/6/22

N2 - Metallic alloys coalesce via extremely rapid melting and subsequent solidification to form fusion welded joints. The melt pool evolution in melting and solidification sequences during the welding process determines the formation of the final weld joint shape, microstructure and defects. The scientific insight on weld pool evolution and related phenomena can be a key contribution to enhance structural integrity and resilience of the welded structures or components. However, inherent complexity with multi-physics phenomena, associated high temperatures and the rapidness of the processes make direct experimental investigation of welding is extremely demanding. Thus, internal flow behaviour during welding or other melt-pool-based metal processing such as additive manufacturing remains unclear and hinders progression to process optimisation. In this contribution we report the observation of melt pool dynamics that take place during electric arc welding, obtained through in situ synchrotron imaging at millisecond scale. The analysis flow patterns along with the quantified weld pool surface dynamics revealed us to how different contributing forces dictate the flow conditions over the distinct durations of the relatively short existence of the liquid phase. Our preliminary results suggest the existence of arc, surface tension and gravity dominant regimes during the evaluation of the weld pool. Further, we present our observations on how different welding parameters influence these regimes and develop into different transient conditions.

AB - Metallic alloys coalesce via extremely rapid melting and subsequent solidification to form fusion welded joints. The melt pool evolution in melting and solidification sequences during the welding process determines the formation of the final weld joint shape, microstructure and defects. The scientific insight on weld pool evolution and related phenomena can be a key contribution to enhance structural integrity and resilience of the welded structures or components. However, inherent complexity with multi-physics phenomena, associated high temperatures and the rapidness of the processes make direct experimental investigation of welding is extremely demanding. Thus, internal flow behaviour during welding or other melt-pool-based metal processing such as additive manufacturing remains unclear and hinders progression to process optimisation. In this contribution we report the observation of melt pool dynamics that take place during electric arc welding, obtained through in situ synchrotron imaging at millisecond scale. The analysis flow patterns along with the quantified weld pool surface dynamics revealed us to how different contributing forces dictate the flow conditions over the distinct durations of the relatively short existence of the liquid phase. Our preliminary results suggest the existence of arc, surface tension and gravity dominant regimes during the evaluation of the weld pool. Further, we present our observations on how different welding parameters influence these regimes and develop into different transient conditions.

U2 - 10.1088/1757-899X/861/1/012071

DO - 10.1088/1757-899X/861/1/012071

M3 - Article

VL - 861

JO - IOP Conference Series: Materials Science and Engineering

JF - IOP Conference Series: Materials Science and Engineering

SN - 1757-8981

IS - 1

M1 - 012071

ER -