TY - JOUR
T1 - Fracture mechanics analysis of the stress corrosion cracking failure of stainless steel hexagonal head screws in a marine-industrial environment
AU - González-Velázquez, J. L.
AU - Rivas-López, D. I.
AU - Beltrán-Zúñiga, M. A.
AU - Villagómez-Ortega, J.
AU - Dorantes-Rosales, H. J.
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/4
Y1 - 2023/4
N2 - This paper presents the fracture mechanics analysis of hexagonal head clamping screws of a diaphragm differential manometer located at the oil discharge head of an offshore facility. The failure mechanism was identified as chlorine stress corrosion cracking (CLSCC) in a marine-industrial environment containing chloride chemical species. The cause of failure was identified as overtightening up to 1.55 times above the nominal clamp-loads during the installation of the failed screws, while the partially failed screws were tightened closer to the nominal values. Data on the fracture toughness and CLSCC growth-rate of type 304 stainless-steel in the marine-industrial environment were obtained by applying fracture mechanics and fractographic examination. The kinetics data indicates that most of the crack growth time is spent in the Stage I of SCC, so the kinetics equation for this can be used to make conservative estimations of the remaining life if a reasonable Stage I crack-size is used.
AB - This paper presents the fracture mechanics analysis of hexagonal head clamping screws of a diaphragm differential manometer located at the oil discharge head of an offshore facility. The failure mechanism was identified as chlorine stress corrosion cracking (CLSCC) in a marine-industrial environment containing chloride chemical species. The cause of failure was identified as overtightening up to 1.55 times above the nominal clamp-loads during the installation of the failed screws, while the partially failed screws were tightened closer to the nominal values. Data on the fracture toughness and CLSCC growth-rate of type 304 stainless-steel in the marine-industrial environment were obtained by applying fracture mechanics and fractographic examination. The kinetics data indicates that most of the crack growth time is spent in the Stage I of SCC, so the kinetics equation for this can be used to make conservative estimations of the remaining life if a reasonable Stage I crack-size is used.
KW - Austenitic stainless steel
KW - Chloride stress corrosion cracking
KW - Failure analysis
KW - Stress intensity factor threshold for stress corrosion cracking
UR - http://www.scopus.com/inward/record.url?scp=85147544105&partnerID=8YFLogxK
U2 - 10.1016/j.engfailanal.2023.107098
DO - 10.1016/j.engfailanal.2023.107098
M3 - Artículo
AN - SCOPUS:85147544105
SN - 1350-6307
VL - 146
JO - Engineering Failure Analysis
JF - Engineering Failure Analysis
M1 - 107098
ER -
