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Effect of Microstructure on Low-Temperature Fracture Toughness of a Submerged-Arc-Welded Low-Carbon and Low-Alloy Steel Plate
| Content Provider | MDPI |
|---|---|
| Author | Choi, Byeong Chan Kim, Byoungkoo Kim, Byung Jun Choi, Yong-Wook Lee, Sang Joon Jeon, Jong Bae Kim, Yangdo Kim, Hyoung Chan |
| Copyright Year | 2021 |
| 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. |
| Starting Page | 1839 |
| e-ISSN | 20754701 |
| DOI | 10.3390/met11111839 |
| Journal | Metals |
| Issue Number | 11 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-11-16 |
| Access Restriction | Open |
| Subject Keyword | Metals Thick Plate Steel Low-carbon Steel Submerged-arc Welding Welding Microstructure Impact Test |
| Content Type | Text |
| Resource Type | Article |