Relationship between microstructure and impact toughness of weld metals in pipe high-strength low-alloy steels (research review)

OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 26 No. 1 2024 Fig. 9. SEM images of weld metals are shown after etching with Nital 2 %. Where: AF – acircular ferrite; PF – primary ferrite; FS – ferrite with second phase; M – martensite [32]

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