Fatigue Crack Growth Behavior and Fracture Toughness of EH36 TMCP Steel
The fatigue crack growth behavior and fracture toughness of EH36 thermo-mechanical control process (TMCP) steel were investigated by fatigue crack growth rate testing and fracture toughness testing at room temperature. Scanning electron microscopy was used to observe the fracture characteristics of...
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2021
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oai:doaj.org-article:eca35feff8a54be6968cb9531dea528d2021-11-11T18:09:09ZFatigue Crack Growth Behavior and Fracture Toughness of EH36 TMCP Steel10.3390/ma142166211996-1944https://doaj.org/article/eca35feff8a54be6968cb9531dea528d2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6621https://doaj.org/toc/1996-1944The fatigue crack growth behavior and fracture toughness of EH36 thermo-mechanical control process (TMCP) steel were investigated by fatigue crack growth rate testing and fracture toughness testing at room temperature. Scanning electron microscopy was used to observe the fracture characteristics of fatigue crack propagation and fracture toughness. The results indicated that the microstructure of EH36 steel is composed of ferrite and pearlite with a small amount of texture. The Paris formula was obtained based on the experimental data, and the value of fracture toughness for EH36 steel was also calculated using the J-integral method. The observations conducted on fatigue fracture surfaces showed that there were a lot of striations, secondary cracks and tearing ridges in the fatigue crack propagation region. Additionally, there existed many dimples on the fracture surfaces of the fracture toughness specimens, which indicated that the crack was propagated through the mechanism of micro-void growth/coalescence. Based on the micromechanical model, the relationship between the micro-fracture surface morphology and the fracture toughness of EH36 steel was established.Qingyan ZhuPeng ZhangXingdong PengLing YanGuanglong LiMDPI AGarticleEH36fatigue crack growth rateJ-integralfracture toughnessfracture mechanismTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6621, p 6621 (2021) |
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DOAJ |
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DOAJ |
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EN |
| topic |
EH36 fatigue crack growth rate J-integral fracture toughness fracture mechanism Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
| spellingShingle |
EH36 fatigue crack growth rate J-integral fracture toughness fracture mechanism Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Qingyan Zhu Peng Zhang Xingdong Peng Ling Yan Guanglong Li Fatigue Crack Growth Behavior and Fracture Toughness of EH36 TMCP Steel |
| description |
The fatigue crack growth behavior and fracture toughness of EH36 thermo-mechanical control process (TMCP) steel were investigated by fatigue crack growth rate testing and fracture toughness testing at room temperature. Scanning electron microscopy was used to observe the fracture characteristics of fatigue crack propagation and fracture toughness. The results indicated that the microstructure of EH36 steel is composed of ferrite and pearlite with a small amount of texture. The Paris formula was obtained based on the experimental data, and the value of fracture toughness for EH36 steel was also calculated using the J-integral method. The observations conducted on fatigue fracture surfaces showed that there were a lot of striations, secondary cracks and tearing ridges in the fatigue crack propagation region. Additionally, there existed many dimples on the fracture surfaces of the fracture toughness specimens, which indicated that the crack was propagated through the mechanism of micro-void growth/coalescence. Based on the micromechanical model, the relationship between the micro-fracture surface morphology and the fracture toughness of EH36 steel was established. |
| format |
article |
| author |
Qingyan Zhu Peng Zhang Xingdong Peng Ling Yan Guanglong Li |
| author_facet |
Qingyan Zhu Peng Zhang Xingdong Peng Ling Yan Guanglong Li |
| author_sort |
Qingyan Zhu |
| title |
Fatigue Crack Growth Behavior and Fracture Toughness of EH36 TMCP Steel |
| title_short |
Fatigue Crack Growth Behavior and Fracture Toughness of EH36 TMCP Steel |
| title_full |
Fatigue Crack Growth Behavior and Fracture Toughness of EH36 TMCP Steel |
| title_fullStr |
Fatigue Crack Growth Behavior and Fracture Toughness of EH36 TMCP Steel |
| title_full_unstemmed |
Fatigue Crack Growth Behavior and Fracture Toughness of EH36 TMCP Steel |
| title_sort |
fatigue crack growth behavior and fracture toughness of eh36 tmcp steel |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/eca35feff8a54be6968cb9531dea528d |
| work_keys_str_mv |
AT qingyanzhu fatiguecrackgrowthbehaviorandfracturetoughnessofeh36tmcpsteel AT pengzhang fatiguecrackgrowthbehaviorandfracturetoughnessofeh36tmcpsteel AT xingdongpeng fatiguecrackgrowthbehaviorandfracturetoughnessofeh36tmcpsteel AT lingyan fatiguecrackgrowthbehaviorandfracturetoughnessofeh36tmcpsteel AT guanglongli fatiguecrackgrowthbehaviorandfracturetoughnessofeh36tmcpsteel |
| _version_ |
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