Element partitioning and electron backscatter diffraction analysis from feeding wire to as-deposited microstructure of wire and arc additive manufacturing with super duplex stainless steel

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dc.contributor.authorZhang, Xiaoyong
dc.contributor.authorWang, Kehong
dc.contributor.authorZhou, Qi
dc.contributor.authorKong, Jian
dc.contributor.authorPeng, Yong
dc.contributor.authorDing, Jialuo
dc.contributor.authorDiao, Chenglei
dc.contributor.authorYang, Dongqing
dc.contributor.authorHuang, Yong
dc.contributor.authorZhang, Tao
dc.contributor.authorWilliams, Stewart W.
dc.date.accessioned2020-01-21T12:31:12Z
dc.date.available2020-01-21T12:31:12Z
dc.date.issued2019-12-24
dc.description.abstractThe redistribution of alloying elements and the crystallographic characterizations in wire and arc additive manufactured (WAAM) super duplex stainless steel (SDSS) was investigated from the wire to the final as-deposited structure. The results showed that elemental partitioning between austenite and ferrite was suppressed in the last layer and the solidified droplet. The high Ni content but low Cr and N contents in the initial state of the intragranular austenite (IGA) confirmed the predominance of the chromium nitrides acted as the nucleation sites. Gathering of nitrogen was found more distinct in the coarsening IGA, Widmanstätten austenite (WA) than the grain boundary austenite (GBA). The columnar epitaxial ferrite presented a strong <001> texture in the deposition direction, while the <001> and <101> orientations was found in the austenite. Random orientations of the intragranular secondary austenite was revealed. The Rotated Cube texture of the austenite grains were consumed by the “recrystallization” textures (Brass, Rotated Brass, Cu, R, E, and F) caused by the austenite reformation. The low-angle interphase boundaries between austenite and ferrite were predominated in the as-deposited wall, and, at which, the K–S orientation took the crucial part. A Taylor factor analysis revealed that through fabrication via additive process, the austenite became oriented “harder” and contributed most to good mechanical properties. The textured microstructure contributed about a 2.6% higher engineering strain in the Z direction and a 27.8 MPa higher yield strength in the X direction.en_UK
dc.identifier.citationZhang X, Wang K, Zhou Q, et al., (2020) Element partitioning and electron backscatter diffraction analysis from feeding wire to as-deposited microstructure of wire and arc additive manufacturing with super duplex stainless steel. Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, Volume 773, January 2019, Article number 138856en_UK
dc.identifier.issn0921-5093
dc.identifier.urihttps://doi.org/10.1016/j.msea.2019.138856
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/14975
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectWire and arc additive manufacturingen_UK
dc.subjectSuper duplex stainless steelen_UK
dc.subjectElement partitioningen_UK
dc.subjectTexture and phase boundary orientationsen_UK
dc.subjectTaylor factoren_UK
dc.titleElement partitioning and electron backscatter diffraction analysis from feeding wire to as-deposited microstructure of wire and arc additive manufacturing with super duplex stainless steelen_UK
dc.typeArticleen_UK

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