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dc.contributor.authorChen, Miaomiao
dc.contributor.authorDu, Qiang
dc.contributor.authorShi, Renhai
dc.contributor.authorFu, Huadong
dc.contributor.authorLiu, Zhuangzhuang
dc.contributor.authorXie, Jianxin
dc.identifier.citationFrontiers in Materials. 2022, 9 1-14.en_US
dc.description.abstractAn in-depth and integral understanding of the microstructural evolution during thermomechanical process (TMP) is of great significance to optimize the manufactural process for high-quality components via additive manufacturing. The solidified microstructure model of Inconel 718 alloy fabricated via laser powder bed fusion (L-PBF) is established by multiphase field model firstly. Furthermore, the microstructural evolution during homogenization process is simulated and optimized in this study. Phase field simulation results show that the concentration gradient of Nb along the radius of the cellular substructure decreases from the initial 1.217 wt% to 0.001 wt%, and 67% area fraction of the Laves phase dissolves at the homogenization time of 0.5 h, which have achieved the homogenization purpose. The experimental results show that the average grain size decreases from 9.4 μm to 5.9 μm at the homogenization time from 1.5 h (the standard AMS 5383) to 0.5 h, which resulted in the increase of yield strength and tensile strength of the aged alloy by 14% and 6%, respectively. This research can provide guidance and reference for the microstructural control as well as the TMP parameters design of the additive manufactured alloys.en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.subjectmechanical propertiesen_US
dc.subjectlaves phaseen_US
dc.subjectlaser powder bed fusionen_US
dc.subjectInconel 718en_US
dc.subjectphase fielden_US
dc.titlePhase field simulation of microstructure evolution and process optimization during homogenization of additively manufactured Inconel 718 alloyen_US
dc.title.alternativePhase field simulation of microstructure evolution and process optimization during homogenization of additively manufactured Inconel 718 alloyen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© 2022 Chen, Du, Shi, Fu, Liu and Xie. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.en_US
dc.source.journalFrontiers in Materialsen_US

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