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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.
| Original language | English |
|---|---|
| Pages (from-to) | 130-143 |
| Journal | Engineering Fracture Mechanics |
| Volume | 201 |
| DOIs | |
| Publication status | Published - 1 Oct 2018 |
| MoE publication type | A1 Journal article-refereed |
Funding
The results presented in this paper are part of a European collaboration project called MULTIMETAL that was funded by the European Commission (EC) within its 7th Framework Program and completed in January 2015. The writing of this paper was funded by project LOST (Long term operational aspects of structural integrity) that is part of SAFIR2018 (The Finnish Research Programme on Nuclear Power Plant Safety 2015-2018).
Keywords
- Crack path
- Dissimilar metal weld
- Nuclear power plant
- Strength mismatch
- Tearing resistance
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Dive into the research topics of 'The effect of crack path on tearing resistance of a narrow-gap Alloy 52 dissimilar metal weld'. Together they form a unique fingerprint.Projects
- 1 Finished
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SAFIR 2018: The Finnish Research Programme on Nuclear Power Plant Safety 2015 - 2018
1/01/15 → 31/03/19
Project: Research