Imaging transient solidification behavior

Joseph T. McKeown

doi:10.1557/mrs.2020.273

2020-11-10

PRE

Joseph T. McKeown *

Amy J. Clarke

J.M.K. Wiezorek

DOI：10.1557/mrs.2020.273

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摘要

En 中文

Solidification processing offers the first opportunity to control microstructure, properties, and performance in metallic alloy components. Until recently, microstructural evaluations were limited to post-solidification characterization by destructive methods. We review the development of time-resolved, in situ imaging techniques capable of capturing solid-liquid interfacial evolution in metallic alloys with high spatial and temporal resolution under diverse solidification conditions relevant for applications ranging from conventional directional solidification, crystal growth, and casting, to welding and additive manufacturing. These experiments enable direct visualization of transient behaviors that would otherwise remain unknown, uniquely providing insights into the physics that impact microstructure and defect development, and strategies for microstructural control and defect mitigation. Understanding microstructural evolution and the characteristics that form under various solidification conditions is essential for the development of multiscale, experimentally informed predictive modeling. This is highlighted by solidification simulations that utilize in situ measurements of solidification dynamics from state-of-the-art experimental techniques.

Keyword:

GROWTH-MODE TRANSITIONS

AL-CU ALLOYS

IN-SITU

DIRECTIONAL SOLIDIFICATION

RAPID SOLIDIFICATION

MICROSTRUCTURE SELECTION

DENDRITIC GROWTH

BANDED STRUCTURE

REAL-TIME

EVOLUTION

AI总结

对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。

期刊

MRS Bulletin

IF:

4.9

论文数:

5.3K

被引数:

9.5K

机构

Colorado School of Mines

学者数:

5.6K

论文数: 5.5K

被引数: 1.0W

Lawrence Livermore National Laboratory

学者数:

6.0K

论文数: 3.8K

被引数: 9

united states department of energy (doe)

学者数:

11.3W

论文数: 9.6W

被引数: 246

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