Effect of Microstructure on Low-Temperature Fracture Toughness of a Submerged-Arc-Welded Low-Carbon and Low-Alloy Steel Plate
This study investigated the low-temperature fracture behavior of an 80-mm-thick low-carbon steel plate welded by submerged arc. The relationship between impact absorbed energy and ductility–brittle transition temperature (DBTT) based on the microstructures was evaluated through quantitative analysis...
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MDPI AG
2021
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oai:doaj.org-article:6bbc558477994909be4834b1f66965bb2021-11-25T18:22:19ZEffect of Microstructure on Low-Temperature Fracture Toughness of a Submerged-Arc-Welded Low-Carbon and Low-Alloy Steel Plate10.3390/met111118392075-4701https://doaj.org/article/6bbc558477994909be4834b1f66965bb2021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1839https://doaj.org/toc/2075-4701This study investigated the low-temperature fracture behavior of an 80-mm-thick low-carbon steel plate welded by submerged arc. The relationship between impact absorbed energy and ductility–brittle transition temperature (DBTT) based on the microstructures was evaluated through quantitative analysis on grain size and complex constituent phases using advanced EBSD technique. The microstructure formed differently depending on the heat affections, which determined fracture properties in a low-temperature environment. Among the various microstructures of the heat-affected zone (HAZ), acicular ferrite has the greatest resistance to low-temperature impact due to its fine interlocking formation and its high-angle grain boundaries.Byeong Chan ChoiByoungkoo KimByung Jun KimYong-Wook ChoiSang Joon LeeJong Bae JeonYangdo KimHyoung Chan KimMDPI AGarticlethick plate steellow-carbon steelsubmerged-arc weldingwelding microstructureimpact testMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1839, p 1839 (2021) |
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| collection |
DOAJ |
| language |
EN |
| topic |
thick plate steel low-carbon steel submerged-arc welding welding microstructure impact test Mining engineering. Metallurgy TN1-997 |
| spellingShingle |
thick plate steel low-carbon steel submerged-arc welding welding microstructure impact test Mining engineering. Metallurgy TN1-997 Byeong Chan Choi Byoungkoo Kim Byung Jun Kim Yong-Wook Choi Sang Joon Lee Jong Bae Jeon Yangdo Kim Hyoung Chan Kim Effect of Microstructure on Low-Temperature Fracture Toughness of a Submerged-Arc-Welded Low-Carbon and Low-Alloy Steel Plate |
| description |
This study investigated the low-temperature fracture behavior of an 80-mm-thick low-carbon steel plate welded by submerged arc. The relationship between impact absorbed energy and ductility–brittle transition temperature (DBTT) based on the microstructures was evaluated through quantitative analysis on grain size and complex constituent phases using advanced EBSD technique. The microstructure formed differently depending on the heat affections, which determined fracture properties in a low-temperature environment. Among the various microstructures of the heat-affected zone (HAZ), acicular ferrite has the greatest resistance to low-temperature impact due to its fine interlocking formation and its high-angle grain boundaries. |
| format |
article |
| author |
Byeong Chan Choi Byoungkoo Kim Byung Jun Kim Yong-Wook Choi Sang Joon Lee Jong Bae Jeon Yangdo Kim Hyoung Chan Kim |
| author_facet |
Byeong Chan Choi Byoungkoo Kim Byung Jun Kim Yong-Wook Choi Sang Joon Lee Jong Bae Jeon Yangdo Kim Hyoung Chan Kim |
| author_sort |
Byeong Chan Choi |
| title |
Effect of Microstructure on Low-Temperature Fracture Toughness of a Submerged-Arc-Welded Low-Carbon and Low-Alloy Steel Plate |
| title_short |
Effect of Microstructure on Low-Temperature Fracture Toughness of a Submerged-Arc-Welded Low-Carbon and Low-Alloy Steel Plate |
| title_full |
Effect of Microstructure on Low-Temperature Fracture Toughness of a Submerged-Arc-Welded Low-Carbon and Low-Alloy Steel Plate |
| title_fullStr |
Effect of Microstructure on Low-Temperature Fracture Toughness of a Submerged-Arc-Welded Low-Carbon and Low-Alloy Steel Plate |
| title_full_unstemmed |
Effect of Microstructure on Low-Temperature Fracture Toughness of a Submerged-Arc-Welded Low-Carbon and Low-Alloy Steel Plate |
| title_sort |
effect of microstructure on low-temperature fracture toughness of a submerged-arc-welded low-carbon and low-alloy steel plate |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/6bbc558477994909be4834b1f66965bb |
| work_keys_str_mv |
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| _version_ |
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