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    Determining the Fracture Mode: Brittle Fracture vs. Fatigue in a Pump Shaft

    Hello, A broken pump shaft made of 1.4021 stainless steel failed at room temperature. The broken surface looks smooth and shiny, with some sparkles when tilted. Under the microscope, the cracks mostly followed the grain boundaries (intergranular fracture), which usually points to brittle...

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