MORPHOLOGICAL EFFECT OF MARTENSITE-AUSTENITE CONSTITUENTS ON FRACTURE TOUGHNESS OF WELD HAZ

Abstract

Abstract: The morphological effect of martensise-austenite (M-A) constituents in weld coarse grained heat affected zone (CGHAZ) on the toughness is studied quantitatively with a binary image processor for high strength steel. The results show that the volume fraction of the slender M-A constituents SVf affected the toughness. The toughness was degraded remarkably with the increase of SVf value, but this harm of slender particles was eliminated as SVf value excceed a particular value because of the vicinity effect.

Key words: HAZ, Image processor, Morphology of M-A constituent, Toughness, Welded joint, Adhesive bonding, Dissimilar material joining, Mechanical joining, Multi-material vehicle body, Solid-state welding, Welding-brazing, Lightweighting

Jing Hongyang;Huo Lixing;Zhang Yufeng;Toyoda Masao;Minami Fumiyoshi. MORPHOLOGICAL EFFECT OF MARTENSITE-AUSTENITE CONSTITUENTS ON FRACTURE TOUGHNESS OF WELD HAZ[J]. , 1995, 31(6): 102-108.

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MORPHOLOGICAL EFFECT OF MARTENSITE-AUSTENITE CONSTITUENTS ON FRACTURE TOUGHNESS OF WELD HAZ

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