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首页> 外文学位 >Development of an advanced aluminum thermal analysis system for the characterization of the 319 aluminum alloy solidification process.
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Development of an advanced aluminum thermal analysis system for the characterization of the 319 aluminum alloy solidification process.

机译：开发用于表征319铝合金凝固过程的先进铝热分析系统。

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摘要

Thermal analysis is the study of heat evolution as a molten alloy transforms to a solid. Studying the evolution of heat results in a temperature, time relationship in the form of a cooling curve. Specific characteristics of the 319-aluminum cooling curve are described and related to specific metallurgical properties. Variations in the cooling curves represent changes within the solidification of the alloy and are correlated to changes in the metallurgical properties.; In the present work, an aluminum thermal analysis system (AITAS) is constructed to withstand the rigors of day to day foundry conditions. Complete automation has been introduced to reduce the number of variables introduced by the operator to the system. This includes automatic analysis and storage of the results in a database, which allows for later statistical evaluation. Methods of noise filtering and automatic temperature detection have all been improved over previous systems in order to reduce measurement error.; Experimental work concluded that AITAS is capable of determining the degree of silicon modification as a result of strontium additions. In addition, AITAS is able to determine which aluminum-copper phases are present including the area fraction of each in the aluminum 319 alloy.
机译：热分析是对随着熔融合金转变成固体而产生的热量进行的研究。研究热量的释放会以冷却曲线的形式产生温度，时间关系。描述了319-铝冷却曲线的特定特征，并与特定的冶金性能有关。冷却曲线的变化代表了合金凝固过程中的变化，并且与冶金性能的变化相关。在目前的工作中，铝热分析系统（AITAS）可以承受每天铸造条件的严峻考验。引入了完全自动化以减少操作员引入系统的变量数量。这包括自动分析结果并将结果存储在数据库中，以便以后进行统计评估。噪声过滤和自动温度检测的方法都比以前的系统有所改进，以减少测量误差。实验工作得出结论，ITAS能够确定由于添加锶而导致的硅改性程度。另外，ITAS能够确定存在哪些铝-铜相，包括铝319合金中每种相的面积分数。

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  • 作者

    Stockwell, Todd J.;

  • 作者单位

    University of Windsor (Canada).;

  • 授予单位 University of Windsor (Canada).;
  • 学科 Engineering Materials Science.
  • 学位 M.A.Sc.
  • 年度 2005
  • 页码 94 p.
  • 总页数 94
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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