Journal ArticleDOI
Investigation on evolution mechanisms of site-specific grain structures during metal additive manufacturing
Pengwei Liu,Pengwei Liu,Yanzhou Ji,Zhuo Wang,Chunlei Qiu,Alphons A. Antonysamy,Long Qing Chen,Xiangyang Cui,Lei Chen +8 more
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TLDR
In this paper, a multiscale model is developed to investigate the evolution mechanisms of site-specific grain structures during additive manufacturing of metallic alloys, using the selective electron beam melting (SEBM) fabrication of Ti-6Al-4V as an example.About:
This article is published in Journal of Materials Processing Technology.The article was published on 2018-07-01. It has received 79 citations till now. The article focuses on the topics: Grain growth.read more
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Insight into the mechanisms of columnar to equiaxed grain transition during metallic additive manufacturing
TL;DR: In this article, the columnar to equiaxed transition (CET) of grain structures associated with processing conditions has been observed during metallic additive manufacturing (AM), but the formation mechanisms of these grain structures have not been well understood under rapid solidification conditions, especially for AM of superalloys.
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From classical thermodynamics to phase-field method
TL;DR: The phase-field method as mentioned in this paper is a density-based computational method at the mesoscale for modeling and predicting the temporal microstructure and property evolution during materials processes, which can provide guidance to designing materials for optimum properties or discovering novel mesoscales phenomena or new materials functionalities.
Journal ArticleDOI
From classical thermodynamics to phase-field method
TL;DR: The phase-field method as mentioned in this paper is a density-based computational method at the mesoscale for modeling and predicting the temporal microstructure and property evolution during materials processes, which can provide guidance to designing materials for optimum properties or discovering novel mesoscales phenomena or new materials functionalities.
Journal ArticleDOI
In situ design of advanced titanium alloy with concentration modulations by additive manufacturing.
Tianlong Zhang,Tianlong Zhang,Zhenghua Huang,Tao Yang,Haojie Kong,Junhua Luan,Anding Wang,Dong Wang,Way Kuo,Yunzhi Wang,C.T. Liu +10 more
TL;DR: Additive manufacturing is a revolutionary technology that offers a different pathway for material processing and design as mentioned in this paper, however, innovations in either new materials or new processing technologies have not yet materialized.
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Investigation on Microsegregation of IN718 Alloy During Additive Manufacturing via Integrated Phase-Field and Finite-Element Modeling
TL;DR: In this article, a multi-scale model combining finite element method (FEM) and phase-field model (PFM) is applied to simulate the evolution of solidification microstructures at different locations within a molten pool of an additively manufactured IN718 alloy.
References
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Anisotropic tensile behavior of Ti-6Al-4V components fabricated with directed energy deposition additive manufacturing
TL;DR: In this article, the authors investigated the anisotropic mechanical properties of a Ti-6Al-4V three-dimensional cruciform component fabricated using a directed energy deposition additive manufacturing (AM) process.
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The Origin of Microstructural Diversity, Texture, and Mechanical Properties in Electron Beam Melted Ti-6Al-4V
TL;DR: In this paper, a β-phase reconstruction from room temperature α-phase electron backscatter diffraction (EBSD) data, reveals a strong texture perpendicular to the build axis.
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A three-dimensional finite element analysis of the temperature field during laser melting of metal powders in additive layer manufacturing
TL;DR: In this paper, the authors used an innovative simulation technique known as element birth and death, in modelling the three-dimensional temperature field in multiple layers in a powder bed, which indicated that the heated regions undergo rapid thermal cycles that could be associated with commensurate thermal stress cycles.
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Effect of build geometry on the β-grain structure and texture in additive manufacture of Ti6Al4V by selective electron beam melting
TL;DR: In this paper, the effect of geometry on the variability in the grain structure and texture, seen in Tisingle bond6Al single bond4V alloy components produced by Selective Electron Beam Melting (SEBM), has been investigated.