Study on fracture toughness test of SUMITEN 950-TMCP highstrength steel welded joint

Abstract

Abstract: Based on the fracture toughness test of the SUMITEN 950-TMCP highstrength steel welded joint, the CTOD (Crack Tip Opening Displacement) values of the parent metal, the welded seam and the heataffected zone were measured respectively; and the fracture toughness values of the various zones of the joint were compared. According to the test data, the antifracture performance of the steel and the welded joint was analyzed. Combining with the impact toughness test and the blast test data of the scale model bifurcated pipe, the eligibility criteria of the fracture toughness for highstrength steel was discussed. Some conditions satisfied with the steel used in hydropower project was proposed.

Key words: SUMITEN 950-TMCP high-strength steel, welded joint, fracture toughness, test

LEI Qinghua. Study on fracture toughness test of SUMITEN 950-TMCP highstrength steel welded joint[J]. Huadian Technology, 2012, 34(4): 13-17.

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Study on fracture toughness test of SUMITEN 950-TMCP highstrength steel welded joint

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