Branching-induced grain boundary evolution during directional solidification of columnar dendritic grains

Guo, Chunwen; Li, Junjie; Yu, Hui; Wang, Zhijun; Lin, Xin; Wang, Jincheng

doi:10.1016/j.actamat.2017.07.002

Cited by 40 publications

(12 citation statements)

References 43 publications

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“…To obtain an intuitive sense of the experimental results, we have summarized tilted growth morphologies in NaCl solutions in 1 is not the same to a case of bi-crystal competition of two crystal grains with different orientations [20,21]. And two tilting directions of ice dendrites resulted from peculiar ice growth habit is exactly the morphology within a single ice crystal with orientation relationships of XY of an ice dendrite growing under steady state yields its tilting direction of a given pulling velocity.…”

Section: Typical Morphologies Of S/l Interfacementioning

confidence: 99%

“…Furthermore, solute additives were also reported to quantitatively alter the dependence of tilt angle on undercooling and growth velocity. Thus, tilted growth of ice has an intrinsically different nature compared to traditional tilted growth of metals and alloys [20,21] in metallurgical investigations which deals with the resulting morphology with unparalleled thermal gradient and preferred crystal orientation. Tilt angle is a direct indicator of tilted growth of an ice dendrite with respect to its basal pane.…”

Section: Introductionmentioning

confidence: 99%

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Tilting Behavior of Lamellar Ice Tip during Unidirectional Freezing of Aqueous Solutions

Zhang

Wang

et al. 2021

Langmuir

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Freezing of ice has been largely reported from many aspects, especially its complex pattern formation. Ice grown from liquid phase is usually characteristic of lamellar morphology which plays a significant role in various domains. However, tilted growth of ice via transition from coplanar to non-coplanar growth in directional solidification has been paid little attention in previous studies and there is misleading explanation of the formation of tilted lamellar ice. Here, we in-situ investigated the variations of tilting behavior of lamellar ice tip under different conditions within a single ice crystal with manipulated orientation via unidirectional freezing of aqueous solutions. It is found that tilted growth of ice tips is sensitive to pulling velocity and solute type. These experimental results reveal intrinsic tilted growth behavior of lamellar ice and enrich our understanding in pattern formation of ice.

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Section: Typical Morphologies Of S/l Interfacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tilting Behavior of Lamellar Ice Tip during Unidirectional Freezing of Aqueous Solutions

Zhang

Wang

et al. 2021

Langmuir

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“…(b) that, one is very likely to mistakenly interpret the ice growth morphology in Fig.2 (b) as a case of bi-crystal competition of two ice grains with different orientations[49,50], which, however, is exactly the ice morphology within a single ice crystal with an orientation of The physical pictures of bi-crystal competition and the experimental observations in this Letter are intrinsically different.…”

mentioning

confidence: 83%

Crossover from lamellar to intersected ice morphologies within a single ice crystal during unidirectional freezing of an aqueous solution

Zhang

Wang

et al. 2022

Journal of Crystal Growth

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“…39) Several studies have recently been carried out to elucidate formation behaviors of converging and diverging grain boundaries composed of favorably-oriented dendrites and unfavorably-oriented dendrites by means of quantitative phase-field simulations. 6,7,40,41) Reproducibility of these recent findings depends on the validity of F env . This point remains to be investigated in a future work.…”

Section: Directional Solidificationmentioning

confidence: 93%

Multi-Phase-Field Modeling of Transformation Kinetics at Multiple Scales and Its Application to Welding of Steel

2019

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Production processes of structural materials generally involve a variety of microstructural evolutions, spatiotemporal scales of which are different by several orders of magnitude. In this study, a multi-phase-field model for simulating transformation phenomena at multiple scales is developed by considering mesoscopic kinetics of interest based on diffuse interface description without curvature effect. In particular, the present model is developed for simulations of microstructural evolutions during welding of carbon steels. In this model, the motion of dendrite envelope is described to simulate solidification not at a dendritic scale but at a scale of grain structure. Moreover, the pinning effect is described based on a mean-field approximation, which allows for simulations of grain growth with existence of very fine particles. The present model is applied to two-dimensional simulations for welding processes of carbon steel. The microstructural evolution involving the melting, solidification, austenite grain growth and pinning effect due to very fine particles is demonstrated.

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Branching-induced grain boundary evolution during directional solidification of columnar dendritic grains

Cited by 40 publications

References 43 publications

Tilting Behavior of Lamellar Ice Tip during Unidirectional Freezing of Aqueous Solutions

Tilting Behavior of Lamellar Ice Tip during Unidirectional Freezing of Aqueous Solutions

Crossover from lamellar to intersected ice morphologies within a single ice crystal during unidirectional freezing of an aqueous solution

Multi-Phase-Field Modeling of Transformation Kinetics at Multiple Scales and Its Application to Welding of Steel

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