Comparative analysis of cold and warm rolling on tensile properties and microstructure of additive manufactured Inconel 718

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dc.contributor.authorZhang, Tao
dc.contributor.authorLi, Huigui
dc.contributor.authorGong, Hai
dc.contributor.authorWu, Yunxin
dc.contributor.authorAhmad, Abdulrahaman Shuaibu
dc.contributor.authorChen, Xin
dc.contributor.authorZhang, Xiaoyong
dc.date.accessioned2022-01-24T16:47:19Z
dc.date.available2022-01-24T16:47:19Z
dc.date.issued2022-01-14
dc.description.abstractDespite the high efficiency and low cost of wire + arc additive manufacture (WAAM), the epitaxial grown columnar dendrites of WAAM deposited Inconel 718 cause inferior properties and severe anisotropy compared to the wrought components. Fundamental studies on the influence of one-pass cold and warm rolling on hardness and microstructure were investigated. Then the interpass cold and warm rolling on tensile properties were also analyzed. The results show that the one-pass rolling increases the hardness and displays a heterogeneous hardness distribution compared to the as-deposited material, and the warm rolling exhibits a larger and deeper strain compared to cold rolling. The columnar dendrites gradually change to cell dendrites under the rolling process and then change to equiaxed grains with the subsequent new layer deposition. The average grain size is 16.8 μm and 23.5 μm for the warm and cold rolling, respectively. The strongly textured columnar dendrites with preferred < 001 > orientation transform to equiaxed grains with random orientation after rolling process. The grain refinement contributes to the dispersive distributed strengthening phases and the increase in its fraction with heat treatment. The as-deposited samples show superior tensile properties compared to the cast material but inferior compared to the wrought components, while the warm-rolled samples show superior tensile properties to wrought material. Isotropic tensile properties are obtained in warm rolling compared to cold rolling. The rolling process and heat treatment both decrease the elongation and lead to a transgranular ductile fracture mode. Finally, the rolling-induced strengthening mechanism was discussed.en_UK
dc.identifier.citationZhang T, Li H, Gong H, et al., (2022) Comparative analysis of cold and warm rolling on tensile properties and microstructure of additive manufactured Inconel 718. Archives of Civil and Mechanical Engineering, Volume 22, Issue 1, February 2022, Article number 44en_UK
dc.identifier.issn1644-9665
dc.identifier.urihttps://doi.org/10.1007/s43452-021-00356-7
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/17489
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectWire + arc additive manufactureen_UK
dc.subjectCold and warm rollingen_UK
dc.subjectMicrostructureen_UK
dc.subjectTensile propertiesen_UK
dc.subjectStrengthening mechanismen_UK
dc.titleComparative analysis of cold and warm rolling on tensile properties and microstructure of additive manufactured Inconel 718en_UK
dc.typeArticleen_UK

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