IIW IWI-C Practice Questions - IIW International Welding Inspector - Comprehensive (IWI-C) Exam

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In a C-Mn steel weld, which microconstituent forming in the weld metal is generally most beneficial to low-temperature toughness?

Grain-boundary ferrite Acicular ferrite Upper bainite Widmanstatten ferrite (ferrite with aligned second phase)

Correct Answer:

Acicular ferrite

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