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Diagnosis of Oxide Films in Cast Aluminum Alloys

机译:铸造铝合金中氧化膜的诊断

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摘要

Aluminum (Al) alloy castings often contain many defects, such as micro-shrinkage, gas pores, shrinkage pores, hot tearing, and oxide film entrapment. When oxide films are entrapped in Al alloy castings, they are very difficult to identify simply by optical observation. In this study we used an auto-scanning eddy current testing method to detect oxide films entrapped in Al alloy castings. The detection signal and the measurement data were confirmed by scanning electron microscope (SEM) observation and partly backed-up by the ultrasonic-vibration method.
机译:铝(Al)合金铸件通常包含许多缺陷,例如微收缩,气孔,收缩孔,热撕裂和氧化膜截留。当氧化膜被夹在铝合金铸件中时,仅通过光学观察很难识别它们。在这项研究中,我们使用了一种自动扫描涡流测试方法来检测夹在铝合金铸件中的氧化膜。检测信号和测量数据通过扫描电子显微镜(SEM)的观察得到确认,并通过超声振动法得到部分支持。

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