Growth Kinetics and Development of the Solid–Liquid Interface in Low-Carbon and High-Alloy Steel Castings Enabled by Confocal Microscopy

IF 2.6 3区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING International Journal of Metalcasting Pub Date : 2024-07-11 DOI:10.1007/s40962-024-01402-9
Katelyn Kiser, Viraj A. Athavale, Laura Bartlett, Mario Buchely, Ronald O’Malley
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Abstract

High-Temperature Laser Scanning Confocal Microscopy (HT-LSCM) is an in situ technique that can be used for direct observation of the microstructure during melting, solidification, and solid-state cooling. Therefore, this tool is a powerful method that can be used to understand how cooling conditions affect the solidification structure and degree of alloy segregation in steel castings. In the current study, specimen shape and size were optimized for this technique using an ultra-low-carbon steel. HT-LSCM was then utilized to observe the melting and solidification phenomena as a function of cooling rate for the ultra-low-carbon steel as well as a high-alloy austenitic manganese and aluminum steel. The growth kinetics and evolution of the solid–liquid interface during solidification were derived from time-lapse videos. The resulting solidification microstructure was determined utilizing scanning electron microscopy.

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通过共聚焦显微镜观察低碳钢和高合金钢铸件固液界面的生长动力学和发展过程
高温激光扫描共聚焦显微镜 (HT-LSCM) 是一种现场技术,可用于直接观察熔化、凝固和固态冷却过程中的微观结构。因此,该工具是一种强大的方法,可用于了解冷却条件如何影响钢铸件的凝固结构和合金偏析程度。在当前的研究中,使用超低碳钢优化了该技术的试样形状和尺寸。然后利用 HT-LSCM 观察超低碳钢以及高合金奥氏体锰铝钢的熔化和凝固现象与冷却速度的函数关系。通过延时视频得出了凝固过程中固液界面的生长动力学和演变过程。利用扫描电子显微镜确定了由此产生的凝固微观结构。
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来源期刊
International Journal of Metalcasting
International Journal of Metalcasting 工程技术-冶金工程
CiteScore
4.20
自引率
42.30%
发文量
174
审稿时长
>12 weeks
期刊介绍: The International Journal of Metalcasting is dedicated to leading the transfer of research and technology for the global metalcasting industry. The quarterly publication keeps the latest developments in metalcasting research and technology in front of the scientific leaders in our global industry throughout the year. All papers published in the the journal are approved after a rigorous peer review process. The editorial peer review board represents three international metalcasting groups: academia (metalcasting professors), science and research (personnel from national labs, research and scientific institutions), and industry (leading technical personnel from metalcasting facilities).
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