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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fracture Failure Performance of 35VB Steel High-Strength Bolts Used in Subtropical Humid Climate
In this study, 35VB high-strength bolts used in subtropical, humid climate were tested to determine the causes of fracture failure. Simulated working conditions of a stress corrosion experiment were carried out on bolt #S1. The fracture macromorphology, micromorphology, and phase composition of corrosion products of failed bolt #D1 and simulated stress corrosion bolt #S1, the metallographic structure of the new bolts #N1, #D1, and #S1, and the mechanical properties of #N1 and #S1 were compared and analyzed. It was concluded that the microstructure of #D1 was defective and there were cracks in the crack source region and the crack propagation region. Stress loading and environmental corrosion led to the occurrence of fracture synergistically. It was speculated that the coupling of the environment with stress produced little damage to the bolt in the stress corrosion test, but the environment and stress accelerated the impact on fracture failure.
Fracture Failure Performance of 35VB Steel High-Strength Bolts Used in Subtropical Humid Climate
In this study, 35VB high-strength bolts used in subtropical, humid climate were tested to determine the causes of fracture failure. Simulated working conditions of a stress corrosion experiment were carried out on bolt #S1. The fracture macromorphology, micromorphology, and phase composition of corrosion products of failed bolt #D1 and simulated stress corrosion bolt #S1, the metallographic structure of the new bolts #N1, #D1, and #S1, and the mechanical properties of #N1 and #S1 were compared and analyzed. It was concluded that the microstructure of #D1 was defective and there were cracks in the crack source region and the crack propagation region. Stress loading and environmental corrosion led to the occurrence of fracture synergistically. It was speculated that the coupling of the environment with stress produced little damage to the bolt in the stress corrosion test, but the environment and stress accelerated the impact on fracture failure.
Fracture Failure Performance of 35VB Steel High-Strength Bolts Used in Subtropical Humid Climate
Wen, Juan (Autor:in) / Chen, Lin (Autor:in) / Duan, Xu (Autor:in) / Yang, Jian (Autor:in) / Liu, Qingcai (Autor:in) / Liu, Lan (Autor:in)
29.09.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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