Relation between the fatigue and fracture ductile-brittle transition in S500 welded steel joints ...
The formation and propagation of cracks occur through irreversible dislocation movements at notches, material defects, and grain boundaries. Since this process is partly thermally controlled, the resistance to dislocation movements at low temperatures increases. This slows both fatigue initiation an...
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ftdatacite:10.15480/882.4190 2023-07-23T04:18:07+02:00 Relation between the fatigue and fracture ductile-brittle transition in S500 welded steel joints ... Sallaba, Finn Rolof, Franziska Ehlers, Sören Walters, Carey Leroy Braun, Moritz 2022 https://dx.doi.org/10.15480/882.4190 https://tore.tuhh.de/handle/11420/11767 en eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/met12030385 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 arctic conditions weldment fatigue temperature dependence of material fatigue fatigue and fracture mechanics testing at low temperatures fatigue and fracture transitions temperatures direct-current potential drop method scanning electron microscopy fracture toughness testing structural steel Technik Ingenieurwissenschaften Journal Article article-journal JournalArticle ScholarlyArticle 2022 ftdatacite https://doi.org/10.15480/882.419010.3390/met12030385 2023-07-03T22:13:54Z The formation and propagation of cracks occur through irreversible dislocation movements at notches, material defects, and grain boundaries. Since this process is partly thermally controlled, the resistance to dislocation movements at low temperatures increases. This slows both fatigue initiation and fatigue crack propagation. From recent experimental data, it can be seen that fatigue crack growth is accelerated below the fatigue transition temperature (FTT) that correlates with the ductile-brittle transition temperature (DBTT) found by well-known fracture mechanics tests, i.e., Charpy impact, fracture toughness, and CTOD. Hence, this study investigates the relation between FTT and DBTT in S500 high-strength steel base material and welded joints at low temperatures using fatigue crack growth, fracture toughness tests as well as scanning electron microscopy. From the tests, an almost constant decrease in fatigue crack propagation rate is determined with decreasing test temperature even below the DBTT. At −100 ... : The formation and propagation of cracks occur through irreversible dislocation movements at notches, material defects, and grain boundaries. Since this process is partly thermally controlled, the resistance to dislocation movements at low temperatures increases. This slows both fatigue initiation and fatigue crack propagation. From recent experimental data, it can be seen that fatigue crack growth is accelerated below the fatigue transition temperature (FTT) that correlates with the ductile-brittle transition temperature (DBTT) found by well-known fracture mechanics tests, i.e., Charpy impact, fracture toughness, and CTOD. Hence, this study investigates the relation between FTT and DBTT in S500 high-strength steel base material and welded joints at low temperatures using fatigue crack growth, fracture toughness tests as well as scanning electron microscopy. From the tests, an almost constant decrease in fatigue crack propagation rate is determined with decreasing test temperature even below the DBTT. At −100 ... Article in Journal/Newspaper Arctic DataCite Metadata Store (German National Library of Science and Technology) Arctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
arctic conditions weldment fatigue temperature dependence of material fatigue fatigue and fracture mechanics testing at low temperatures fatigue and fracture transitions temperatures direct-current potential drop method scanning electron microscopy fracture toughness testing structural steel Technik Ingenieurwissenschaften |
spellingShingle |
arctic conditions weldment fatigue temperature dependence of material fatigue fatigue and fracture mechanics testing at low temperatures fatigue and fracture transitions temperatures direct-current potential drop method scanning electron microscopy fracture toughness testing structural steel Technik Ingenieurwissenschaften Sallaba, Finn Rolof, Franziska Ehlers, Sören Walters, Carey Leroy Braun, Moritz Relation between the fatigue and fracture ductile-brittle transition in S500 welded steel joints ... |
topic_facet |
arctic conditions weldment fatigue temperature dependence of material fatigue fatigue and fracture mechanics testing at low temperatures fatigue and fracture transitions temperatures direct-current potential drop method scanning electron microscopy fracture toughness testing structural steel Technik Ingenieurwissenschaften |
description |
The formation and propagation of cracks occur through irreversible dislocation movements at notches, material defects, and grain boundaries. Since this process is partly thermally controlled, the resistance to dislocation movements at low temperatures increases. This slows both fatigue initiation and fatigue crack propagation. From recent experimental data, it can be seen that fatigue crack growth is accelerated below the fatigue transition temperature (FTT) that correlates with the ductile-brittle transition temperature (DBTT) found by well-known fracture mechanics tests, i.e., Charpy impact, fracture toughness, and CTOD. Hence, this study investigates the relation between FTT and DBTT in S500 high-strength steel base material and welded joints at low temperatures using fatigue crack growth, fracture toughness tests as well as scanning electron microscopy. From the tests, an almost constant decrease in fatigue crack propagation rate is determined with decreasing test temperature even below the DBTT. At −100 ... : The formation and propagation of cracks occur through irreversible dislocation movements at notches, material defects, and grain boundaries. Since this process is partly thermally controlled, the resistance to dislocation movements at low temperatures increases. This slows both fatigue initiation and fatigue crack propagation. From recent experimental data, it can be seen that fatigue crack growth is accelerated below the fatigue transition temperature (FTT) that correlates with the ductile-brittle transition temperature (DBTT) found by well-known fracture mechanics tests, i.e., Charpy impact, fracture toughness, and CTOD. Hence, this study investigates the relation between FTT and DBTT in S500 high-strength steel base material and welded joints at low temperatures using fatigue crack growth, fracture toughness tests as well as scanning electron microscopy. From the tests, an almost constant decrease in fatigue crack propagation rate is determined with decreasing test temperature even below the DBTT. At −100 ... |
format |
Article in Journal/Newspaper |
author |
Sallaba, Finn Rolof, Franziska Ehlers, Sören Walters, Carey Leroy Braun, Moritz |
author_facet |
Sallaba, Finn Rolof, Franziska Ehlers, Sören Walters, Carey Leroy Braun, Moritz |
author_sort |
Sallaba, Finn |
title |
Relation between the fatigue and fracture ductile-brittle transition in S500 welded steel joints ... |
title_short |
Relation between the fatigue and fracture ductile-brittle transition in S500 welded steel joints ... |
title_full |
Relation between the fatigue and fracture ductile-brittle transition in S500 welded steel joints ... |
title_fullStr |
Relation between the fatigue and fracture ductile-brittle transition in S500 welded steel joints ... |
title_full_unstemmed |
Relation between the fatigue and fracture ductile-brittle transition in S500 welded steel joints ... |
title_sort |
relation between the fatigue and fracture ductile-brittle transition in s500 welded steel joints ... |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://dx.doi.org/10.15480/882.4190 https://tore.tuhh.de/handle/11420/11767 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
https://dx.doi.org/10.3390/met12030385 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.15480/882.419010.3390/met12030385 |
_version_ |
1772180265132621824 |