Cross-sectional observation and hardness measurement of the weld joint were conducted! It was found that the void in the center is a blowhole.
We conducted hardness measurements on aluminum spot welds after performing cross-sectional observations, and we would like to present an example of the trends observed in Vickers hardness, Young's modulus, and elasticity ratio. From X-ray radiographic observations, voids were confirmed within the weld area. Cross-sectional observations revealed that the void in the center was a blowhole. Additionally, the hardness measurement results indicated that the area near the blowhole was hard but had low stiffness, making it prone to deformation, while areas slightly away from the blowhole exhibited higher stiffness and were somewhat brittle. [Summary] ■ Observation case of aluminum spot welds: optical microscope images, X-ray images - Voids confirmed within the weld area from X-ray radiographic observations ■ Hardness measurement of cross-section of aluminum spot welds - Measurements conducted focusing on the blowhole - Investigation of trends based on Vickers hardness, Young's modulus, and elasticity ratio *For more details, please refer to the PDF document or feel free to contact us.
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【Hardness Measurement Results】 ■ The area near the blowhole is hard but has low rigidity and is prone to deformation. ■ Areas slightly away from the blowhole have high rigidity and are somewhat brittle. ■ The area near the blowhole is hard and elastic, while it becomes softer and less elastic as it moves away from the blowhole. *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Aites was established in 1993, originating from the quality assurance department of the IBM Japan Yasu office. Based on the technical expertise cultivated through cutting-edge defect analysis and reliability assurance of electronic components at the IBM Japan Yasu office, we have provided various products and services that support the development and manufacturing of semiconductors, displays, organic EL, solar cells, and electronic components to customers both domestically and internationally.
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