API 571 Practice Questions - API 571 Corrosion And Materials Exam

What does sensitization mean for austenitic stainless steel?

Chromium carbides precipitate at grain boundaries, leaving adjacent metal chromium-depleted Hydrogen blisters form in the steel mid-wall Graphite nodules replace the ferrite matrix A hard nitride case forms at the surface

Correct Answer:

Chromium carbides precipitate at grain boundaries, leaving adjacent metal chromium-depleted

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