CAREER: In-Situ Visualization of Metallurgical Processes

职业：冶金过程的原位可视化

• 批准号: 0348818
• 负责人: Sridhar Seetharaman
• 金额: $ 55万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-01-15 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0348818&HistoricalAwards=false
• 关键词: CAREER; Situ; Visualization; Metallurgical; Processes

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.

卡内基梅隆大学的这个职业奖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。 有了这个奖项，PI将研究非金属夹杂物从熔融金属分离成熔融氧化物渣，通过观察界面面积和横截面与共聚焦扫描激光显微镜（CSLM）和X射线荧光透视分别。将开发一个模型来预测分离速率，包括在该过程中的大小和形状的变化，并将该模型与实验观察进行比较。将研究液膜排水和破裂的影响，以及由于变形引起的夹杂物的变化，以及与炉渣的化学反应。了解和预测钢/渣界面上非金属夹杂物的分离将使工业能够设计渣和夹杂物的化学成分，以实现更清洁的熔体，从而产生更可预测的微观结构，这将提高产品质量，过程控制和减少浪费。将开发一个基于网络的软件包，用于可视化铁-碳二元系统中各种选定成分的相变、凝固和熔化，以用于讲座演示或作为“虚拟实验”。 在外联方面，将为暑期少数民族学生开发一个模块，努力使他们接触材料科学和工程领域的机遇和挑战，将开发光谱方法，通过观察界面区域和横截面，使冶金过程可视化，例如将非金属夹杂物从熔融金属分离成熔融氧化物炉渣。 将进行建模和计算机模拟，以预测熔融金属与非金属氧化物炉渣之间的分离速率，并控制冶金过程中夹杂物尺寸和形状的变化。这些研究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程序将有利于更广泛的社区感兴趣的冶金过程。 拟议的推广计划，以开发一个模块的夏季学术少数民族学生将创造兴趣，并提供机会，这些学生在材料科学和工程领域。