The effect of crack path on tearing resistance of a narrow-gap Alloy 52 dissimilar metal weld

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • VTT Technical Research Centre of Finland

Abstract

Fracture mechanical testing of welds with strength mismatch can lead to deviation of the crack path from the initial crack growth plane. Current fracture mechanics standards do not give guidance for analyses of the effect of crack path on the tearing resistance. In this study, the effect of crack path on tearing resistance was investigated by fracture mechanical testing and crack path analyses of a narrow-gap Alloy 52 dissimilar metal weld. The results show that tearing resistance of HAZ cracks deviating towards the same zone close to the fusion boundary is larger for cracks initially further from the fusion boundary. The results were obtained for a specific dissimilar metal weld, but the results can also be used to interpret the effect of crack path on tearing resistance in other type of welds.

Details

Original languageEnglish
Pages (from-to)130-143
JournalEngineering Fracture Mechanics
Volume201
Publication statusPublished - Oct 2018
MoE publication typeA1 Journal article-refereed

    Research areas

  • Crack path, Dissimilar metal weld, Nuclear power plant, Strength mismatch, Tearing resistance

ID: 21871403