Characteristics of Microstructure and Fracture Toughness According to the Groove Shape of Submerged Arc Welding
This study investigates the effects of heat input on the microstructure and fracture toughness of SAW (Submerged Arc Welding) joints with K-groove and X-groove weld preparations using S460NL steel. Microstructural analysis focused on acicular ferrite, grain boundary ferrite, and MA (Martensite–Auste...
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MDPI AG
2024-12-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/15/1/10 |
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| author | Yong-Taek Shin Chang-Ju Jung Seong-Han Bae Gyubaek An Myungrak Son Young-Il Park |
| author_facet | Yong-Taek Shin Chang-Ju Jung Seong-Han Bae Gyubaek An Myungrak Son Young-Il Park |
| author_sort | Yong-Taek Shin |
| collection | DOAJ |
| description | This study investigates the effects of heat input on the microstructure and fracture toughness of SAW (Submerged Arc Welding) joints with K-groove and X-groove weld preparations using S460NL steel. Microstructural analysis focused on acicular ferrite, grain boundary ferrite, and MA (Martensite–Austenite) constituents to assess their influence on CTOD (Crack Tip Opening Displacement). The results indicate that the K-groove achieved a higher CTOD value of 0.82 mm compared to 0.13 mm for the X-groove, attributed to differences in microstructural composition and cooling rates. The findings highlight the impact of groove geometry and heat input on weld performance. |
| format | Article |
| id | doaj-art-4883140efdcb4ad588045df27a2d9218 |
| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj-art-4883140efdcb4ad588045df27a2d92182025-01-24T13:41:23ZengMDPI AGMetals2075-47012024-12-011511010.3390/met15010010Characteristics of Microstructure and Fracture Toughness According to the Groove Shape of Submerged Arc WeldingYong-Taek Shin0Chang-Ju Jung1Seong-Han Bae2Gyubaek An3Myungrak Son4Young-Il Park5Department of Naval Architecture and Ocean Engineering, Dong-A University, Busan 49201, Republic of KoreaDepartment of Naval Architecture and Ocean Engineering, Dong-A University, Busan 49201, Republic of KoreaDepartment of Naval Architecture and Ocean Engineering, Dong-A University, Busan 49201, Republic of KoreaDepartment of Naval Architecture and Ocean Engineering, Chosun University, Gwangju 61452, Republic of KoreaR&D Center, KISWEL Co., Ltd., Busan 47018, Republic of KoreaDepartment of Naval Architecture and Ocean Engineering, Dong-A University, Busan 49201, Republic of KoreaThis study investigates the effects of heat input on the microstructure and fracture toughness of SAW (Submerged Arc Welding) joints with K-groove and X-groove weld preparations using S460NL steel. Microstructural analysis focused on acicular ferrite, grain boundary ferrite, and MA (Martensite–Austenite) constituents to assess their influence on CTOD (Crack Tip Opening Displacement). The results indicate that the K-groove achieved a higher CTOD value of 0.82 mm compared to 0.13 mm for the X-groove, attributed to differences in microstructural composition and cooling rates. The findings highlight the impact of groove geometry and heat input on weld performance.https://www.mdpi.com/2075-4701/15/1/10submerged arc welding (SAW)groove shapescooling ratecrack tip opening displacement (CTOD)martensite–austenite constituents (MA) |
| spellingShingle | Yong-Taek Shin Chang-Ju Jung Seong-Han Bae Gyubaek An Myungrak Son Young-Il Park Characteristics of Microstructure and Fracture Toughness According to the Groove Shape of Submerged Arc Welding Metals submerged arc welding (SAW) groove shapes cooling rate crack tip opening displacement (CTOD) martensite–austenite constituents (MA) |
| title | Characteristics of Microstructure and Fracture Toughness According to the Groove Shape of Submerged Arc Welding |
| title_full | Characteristics of Microstructure and Fracture Toughness According to the Groove Shape of Submerged Arc Welding |
| title_fullStr | Characteristics of Microstructure and Fracture Toughness According to the Groove Shape of Submerged Arc Welding |
| title_full_unstemmed | Characteristics of Microstructure and Fracture Toughness According to the Groove Shape of Submerged Arc Welding |
| title_short | Characteristics of Microstructure and Fracture Toughness According to the Groove Shape of Submerged Arc Welding |
| title_sort | characteristics of microstructure and fracture toughness according to the groove shape of submerged arc welding |
| topic | submerged arc welding (SAW) groove shapes cooling rate crack tip opening displacement (CTOD) martensite–austenite constituents (MA) |
| url | https://www.mdpi.com/2075-4701/15/1/10 |
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