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Case Study Threaded Bolt
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Fractured surface of a threaded bolt M42 (macroscopic view). |
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Microscopic illustration of the structure |
40µm
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Scanning electron fractography with indication of hydrogen embrittlement.
There are ball-like structures in the recesses. |
50µm
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Energy dispersive X-ray analysis in the range of the planning level.
The ball-like particles are metal powder; the vermicular particles are steel swarf.
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50µm
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Energy dispersive X-ray analysis of bright particles at the planning level. |
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