QUESTION: 37

______ is similar to HIC but is a potentially more damaging form of cracking which appears as arrays of cracks stacked on top of each other. The result is a through thickness crack that is perpendicular to the surface and is driven by high levels of stress.

MIC
SOHIC
Sulfuric SCC
None of the above

Answer(s): B

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QUESTION: 38

Weld heat affected zone graphitization is most frequently found in the heataffected zone adjacent to welds in a narrow band, corresponding to the low temperature edge of the heat affected zone, In multi-pass welded butt joints, these zones overlap each other covering the entire cross section.

Because of its appearance, this type of graphitization is called________.