Investigation of 300M ultra-high-strength steel deposited by wire-based gas metal arc additive manufacturing

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dc.contributor.authorWang, Jun
dc.contributor.authorDiao, Chenglei
dc.contributor.authorTaylor, Mark
dc.contributor.authorWang, Chong
dc.contributor.authorPickering, Ed
dc.contributor.authorDing, Jialuo
dc.contributor.authorPimentel, Misael
dc.contributor.authorWilliams, Stewart
dc.date.accessioned2023-11-07T14:34:28Z
dc.date.available2023-11-07T14:34:28Z
dc.date.issued2023-11-01
dc.description.abstract300 M ultra-high-strength steel (UHSS) is widely used to produce landing gear components for aircraft. The conventional manufacturing route for these components involves extensive machining and significant material wastage. Here, the application of wire-based gas metal arc additive manufacturing to produce 300 M UHSS parts was investigated. In particular, the influence of torch shielding atmosphere on the process stability and material performance of 300 M UHSS was investigated. The shielding gases used for comparison are pure Ar, Ar with 2.5% CO2, Ar with 8% CO2, Ar with 20% CO2, and Ar with 2% CO2 and 38% He. It was found that the arc length decreased, the transfer mode changed from spray to droplet mode, and spattering became more severe as the CO2 proportion increased. Additionally, replacing Ar with He led to a broader arc core, and a slightly shorter arc length and maintained a spray transfer, which decreased spatter. The wall surface roughness followed the trend in spatter, becoming worse with the increasing CO2 proportion, and better with He addition. Adding CO2 and He in pure Ar significantly increased the bead and wall width. The microstructure and mechanical properties exhibited a strong location dependence in the as-built state, with fresh martensite and higher strength in the top region, and tempered martensite and better ductility in the reheated bulk. Generally, torch shielding gas composition appeared to have no significant effect on the microstructure evolution. This study provides a reference for the subsequent application of gas metal arc additive manufacturing to aircraft landing gear mass production to achieve a high deposition rate and process stability simultaneously.en_UK
dc.identifier.citationWang J, Diao C, Taylor M, et al., (2023) Investigation of 300M ultra-high-strength steel deposited by wire-based gas metal arc additive manufacturing. The International Journal of Advanced Manufacturing Technology, Volume 129, December 2023, pp. 3751–3767en_UK
dc.identifier.issn0268-3768
dc.identifier.urihttps://doi.org/10.1007/s00170-023-12566-9
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20511
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subject300M ultra-high-strength steelen_UK
dc.subjectWire arc additive manufacturingen_UK
dc.subjectProcess stabilityen_UK
dc.subjectMicrostructureen_UK
dc.subjectMechanical propertiesen_UK
dc.titleInvestigation of 300M ultra-high-strength steel deposited by wire-based gas metal arc additive manufacturingen_UK
dc.typeArticleen_UK

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