Huang Yao, Liu Weining, Li Feng, Fu Mingxiang, Han Junke, Wang Changzhi. Analysis on Fracture Failure of Large Angle Q420 Steel for UHV Transmission Project[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(2): 165-172. doi: 10.7513/j.issn.1004-7638.2018.02.028
Citation:
Huang Yao, Liu Weining, Li Feng, Fu Mingxiang, Han Junke, Wang Changzhi. Analysis on Fracture Failure of Large Angle Q420 Steel for UHV Transmission Project[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(2): 165-172. doi: 10.7513/j.issn.1004-7638.2018.02.028
Huang Yao, Liu Weining, Li Feng, Fu Mingxiang, Han Junke, Wang Changzhi. Analysis on Fracture Failure of Large Angle Q420 Steel for UHV Transmission Project[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(2): 165-172. doi: 10.7513/j.issn.1004-7638.2018.02.028
Citation:
Huang Yao, Liu Weining, Li Feng, Fu Mingxiang, Han Junke, Wang Changzhi. Analysis on Fracture Failure of Large Angle Q420 Steel for UHV Transmission Project[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(2): 165-172. doi: 10.7513/j.issn.1004-7638.2018.02.028
The fracture behavior of large angle Q420 steel was studied by means of optical microscope,scanning electron microscope,mechanical property test and Charpy impact. The fracture behavior was analyzed mainly by metallographic structure,mechanical property,fracture analysis and inclusions analysis,in order to identify the reason of the crack and the density of the crack in the large angle.The results show that the chemical composition and mechanical properties of fractured steel meet the requirements of national standard.Fracture appearance observation indicates brittle cleavage fracture,and large inclusions particles which aremainly the protective residue composition,and the a higher intensity of transverse cracks as well.
DownLoad: