According to API RP 571, under the section on High Temperature Hydrogen Attack (HTHA) and Decarburization:
“Decarburization is typically confirmed by metallographic examination. This method reveals carbon loss and microstructural changes such as spheroidization or softening of pearlite.”
“Tensile or impact testing may not reveal early-stage decarburization, especially in partial layers.”
Therefore, metallographic testing is the standard and most direct method to confirm decarburization damage, making option D correct.
Contribute your Thoughts:
Chosen Answer:
This is a voting comment (?). You can switch to a simple comment. It is better to Upvote an existing comment if you don't have anything to add.
Submit