Research on Fatigue Properties of Typical Welded Joints of DH36 Steel at −60 °C
As the development of the polar region continues to increase, the fatigue properties of structures at low temperature are increasingly receiving researcher attention. This study aimed to investigate the fatigue properties of T-welded and cruciform welded joints at −60 °C. Logarithmic S–N curves base...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-05-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/10/11/3742 |
| _version_ | 1797566830836973568 |
|---|---|
| author | Weidong Zhao Guoqing Feng Wenchao Liu Huilong Ren |
| author_facet | Weidong Zhao Guoqing Feng Wenchao Liu Huilong Ren |
| author_sort | Weidong Zhao |
| collection | DOAJ |
| description | As the development of the polar region continues to increase, the fatigue properties of structures at low temperature are increasingly receiving researcher attention. This study aimed to investigate the fatigue properties of T-welded and cruciform welded joints at −60 °C. Logarithmic S–N curves based on the hot-spot stress of the T-welded and cruciform welded joints at 50% and 95% confidence levels were obtained at −60 °C. The test results showed that the fatigue properties of T-welded joints were almost 2–7% better than those of the cruciform welded joints at −60 °C. Factors that affected the fatigue properties of welded joints, such as the stress concentration factor, microstructure, Vickers hardness profiles, and fractography, were also studied and the test results showed that the fatigue properties of cruciform welded joints at −60 °C were 57.215% better than at room temperature. |
| first_indexed | 2024-03-10T19:32:12Z |
| format | Article |
| id | doaj.art-ae4906c8e2b04c90ac6ad5a17ae2ee88 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T19:32:12Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-ae4906c8e2b04c90ac6ad5a17ae2ee882023-11-20T02:02:09ZengMDPI AGApplied Sciences2076-34172020-05-011011374210.3390/app10113742Research on Fatigue Properties of Typical Welded Joints of DH36 Steel at −60 °CWeidong Zhao0Guoqing Feng1Wenchao Liu2Huilong Ren3Department of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaDepartment of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaDepartment of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaDepartment of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaAs the development of the polar region continues to increase, the fatigue properties of structures at low temperature are increasingly receiving researcher attention. This study aimed to investigate the fatigue properties of T-welded and cruciform welded joints at −60 °C. Logarithmic S–N curves based on the hot-spot stress of the T-welded and cruciform welded joints at 50% and 95% confidence levels were obtained at −60 °C. The test results showed that the fatigue properties of T-welded joints were almost 2–7% better than those of the cruciform welded joints at −60 °C. Factors that affected the fatigue properties of welded joints, such as the stress concentration factor, microstructure, Vickers hardness profiles, and fractography, were also studied and the test results showed that the fatigue properties of cruciform welded joints at −60 °C were 57.215% better than at room temperature.https://www.mdpi.com/2076-3417/10/11/3742fatiguelow temperaturestress concentration factorVickers hardnessfractography |
| spellingShingle | Weidong Zhao Guoqing Feng Wenchao Liu Huilong Ren Research on Fatigue Properties of Typical Welded Joints of DH36 Steel at −60 °C Applied Sciences fatigue low temperature stress concentration factor Vickers hardness fractography |
| title | Research on Fatigue Properties of Typical Welded Joints of DH36 Steel at −60 °C |
| title_full | Research on Fatigue Properties of Typical Welded Joints of DH36 Steel at −60 °C |
| title_fullStr | Research on Fatigue Properties of Typical Welded Joints of DH36 Steel at −60 °C |
| title_full_unstemmed | Research on Fatigue Properties of Typical Welded Joints of DH36 Steel at −60 °C |
| title_short | Research on Fatigue Properties of Typical Welded Joints of DH36 Steel at −60 °C |
| title_sort | research on fatigue properties of typical welded joints of dh36 steel at 60 °c |
| topic | fatigue low temperature stress concentration factor Vickers hardness fractography |
| url | https://www.mdpi.com/2076-3417/10/11/3742 |
| work_keys_str_mv | AT weidongzhao researchonfatiguepropertiesoftypicalweldedjointsofdh36steelat60c AT guoqingfeng researchonfatiguepropertiesoftypicalweldedjointsofdh36steelat60c AT wenchaoliu researchonfatiguepropertiesoftypicalweldedjointsofdh36steelat60c AT huilongren researchonfatiguepropertiesoftypicalweldedjointsofdh36steelat60c |