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what kind of process can cause this failure in EN process?

what kind of process can cause this failure in EN process?

what kind of process can cause this failure in EN process?

(OP)
i am wondering what can make this happen, the substrate is SAE1008.
thanks.

RE: what kind of process can cause this failure in EN process?

You don't give us much to go on. Without further details/photos/SEM shots, all I can offer is that the area is question is a fatigue crack. Kind of hard to tell if it started from a corrosion pit or some other feature. What are the details of the failure? What is the material?

RE: what kind of process can cause this failure in EN process?

Not enough information as to component function, service conditions and material.

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