It is possible to extract and analyze non-metallic inclusions and precipitates.
Non-metallic inclusions and precipitates in steel have a significant impact on the various properties of steel. In extraction analysis, special solutions are used to extract and separate inclusions and precipitates from the steel material, and by combining this with various analytical methods, it is possible to evaluate the quantity, composition, size, and shape of the inclusions and precipitates.
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Non-metallic inclusions and precipitates in steel have a significant impact on various properties of the steel, making it important to understand their size and quantity. For example, non-metallic inclusions such as Al2O3 are known to cause a decrease in strength and can serve as initiation points for fractures. Additionally, precipitates (intermetallic compounds) can sometimes improve high-temperature strength, while in other cases, they can lead to embrittlement. In extraction analysis, special solutions are used to extract and separate inclusions and precipitates from the steel, allowing for the evaluation of their quantity, composition, size, and shape when combined with various analytical methods. Generally, the evaluation of inclusions is widely performed using resin-embedded samples observed under a microscope; however, this method provides a two-dimensional assessment and ignores parts that do not appear on the polished surface. Furthermore, when searching for large inclusions that could serve as fracture initiation points, it is practically difficult to observe a vast area. On the other hand, extraction analysis has the advantage of being able to evaluate samples in gram quantities at once, enabling three-dimensional observation of inclusions and quantification of inclusions per unit weight of the sample.
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Applications/Examples of results
Extraction and analysis of aluminum nitride (AlN) in structural steel.
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Daitō Analysis Research has been advancing the establishment of an advanced think tank based on highly reliable analysis and analytical techniques accumulated in various material fields, as well as the challenges received from a wide range of industry customers. We aim to solve our customers' various issues with the least cost and the shortest delivery time. Moving forward, we would like to support our customers' research and development using the latest equipment and advanced manpower, and assist in creating products that enrich the future.