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Light Metals 2016 (TMS/Light) || TiB <sub/>2</sub> Particle Detection in Liquid Aluminum via Laser Induced Breakdown Spectroscopy
摘要： Experimental Because aluminum alloy castings are becoming commonplace for critical applications in the automotive and aerospace industries, tight control over the cleanliness of the melt (mitigation of solid particle inclusions) and microstructure must be achieved. In order to control cleanliness, it must first be well defined and measured. Very few techniques exist in industry that can quantitatively measure in-situ. Laser-induced breakdown spectroscopy (LIBS) is presented as a promising technique to quantify solid particles, desired or undesired, in aluminum melts. By performing LIBS with subsequent statistical analysis on liquid Al with varying amounts of TiB2 particles, calibration curves for B and Ti were generated.
关键词： Inclusions,LIBS,Metal Cleanliness,Liquid Aluminum
更新于2025-09-12 10:27:22
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Light Metals 2015 (Hyland/Light) || SiC Particle Detection in Liquid Aluminum via Laser Induced Breakdown Spectroscopy
摘要： Aluminum alloy castings are becoming commonplace for critical applications in the automotive and aerospace industries where materials failure is not an option. Tight control over cleanliness of the melt (mitigation of solid particle inclusions and dissolved gases) and microstructure must be achieved. Very few techniques exist that can quantitatively measure inclusion levels in-situ. The use of laser-induced breakdown spectroscopy (LIBS) has shown promise as a technique to quantify solid particles, wanted and unwanted, in aluminum melts. SiC particles were added to pure aluminum and analyzed with LIBS, and traditional metallography. An algorithm, based on the Nalimov test, was used to differentiate between LIBS signal from the matrix and particles. Initial tests show a linear relationship between SiC concentration and LIBS signal.
关键词： Inclusions,LIBS,Metal Cleanliness,Liquid Aluminum
更新于2025-09-11 14:15:04