CAREER: In-Situ Visualization of Metallurgical Processes

这项授予卡内基梅隆大学的职业奖项是通过利用对生产金属和合金至关重要的过程的直接可视化来开展高温冶金领域的研究和教育活动。获得这一奖项后，PI将通过分别使用共焦扫描激光显微镜(CSLM)和X射线荧光显微镜观察界面面积和横截面，研究从熔融金属中分离出非金属夹杂物到熔融氧化渣中的过程。将开发一个模型来预测分离速率、包裹体尺寸和形状在过程中的变化，并将该模型与实验观测结果进行比较。将研究液膜排出和破裂的影响、变形引起的夹杂物变化以及与炉渣的化学反应。了解和预测非金属夹杂物在钢/渣界面上的分离将使工业能够设计熔渣和夹杂物化学，以实现更清洁的熔体，从而产生更可预测的微观结构，从而提高产品质量、工艺控制和减少废物。将开发一个基于网络的包，用于可视化铁-碳二元系中各种选定组合物的相变、凝固和熔化，用于在讲座中演示或作为“虚拟实验”。在推广方面，将为夏季学术少数民族学生开发一个单元，努力使他们接触材料科学和工程领域的机会和挑战。将开发冶金过程的可视化方法，例如通过观察界面面积和横截面将非金属夹杂物从熔融金属中分离成熔融氧化物熔渣。将进行模拟和计算机模拟，以预测熔融金属与非金属氧化物渣之间的分离速度，并控制冶金过程中夹杂物的尺寸和形状的变化。这些研究将对合金的精炼和加工具有潜在的工业应用价值。计划中的基于网络的方案将有利于对冶金工艺感兴趣的更广泛的社区。拟议的扩展计划为夏季学术少数族裔学生开发一个模块，将激发这些学生对材料科学和工程领域的兴趣，并为他们提供机会。

This CAREER award to Carnegie Mellon University is to carry out research and educational activities in the field of high temperature metallurgy by utilizing direct visualization of processes that are critical for producing metals and alloys. With this award, the PI will study the separation of non-metallic inclusions from molten metals into molten oxide slags by viewing the interface area and cross section with Confocal Scanning Laser Microscopy (CSLM) and X-ray fluoroscopy respectively. A model will be developed to predict the separation rates, inclusion of size and shape changes during the process, and comparing this model to the experimental observations. The effects of liquid film drainage and rupture, and changes in the inclusion due to deformation, and chemical reaction with the slag will be studied. Understanding and predicting the separation of non-metallic inclusions across steel/slag interfaces will enable industries to design slag and inclusion chemistries to achieve cleaner melts and thus produce more predictable micro-structures, which would result in increased product quality, process control and less waste. A web-based package will be developed for visualizing phase transformations, solidification and melting of various selected compositions across the iron-carbon binary systems for demonstrations in lectures or as "virtual experiments". In terms of outreach, a module will be developed for Summer Academic Minority Students in an effort to expose them to opportunities and challenges in Materials Science and Engineering fields.Spectroscopic methods will be developed for the visualization of metallurgical processes such as the separation of non-metallic inclusions from molten metals into molten oxide slags by viewing the interface area and cross section. A modeling and computer simulations will be carried out to predict the separation rates between molten metals from nonmetallic oxide slags, and to control changes in the size and shape of inclusions during the metallurgical processes. These studies would be of potential benefit to industrial applications in alloy refinements and processing. The planned web-based program would be of benefit to a wider community interested in metallurgical processes. The proposed outreach program to develop a module for Summer Academic Minority Students would create interest in and provide opportunities for these students in Materials Science and Engineering fields.