Brittle Failure of Low-Carbon Steel Structures at Low Temperatures

2017 ◽  
Vol 37 (12) ◽  
pp. 1062-1069
Author(s):  
Yu. G. Kabaldin ◽  
M. S. Anosov ◽  
M. V. Zhelonkin ◽  
A. A. Golovin
1977 ◽  
Vol 9 (4) ◽  
pp. 458-463 ◽  
Author(s):  
A. Ya. Krasovskii ◽  
O. P. Ostash ◽  
V. A. Stepanenko ◽  
S. Ya. Yarema

2020 ◽  
Author(s):  
Irina Stambolova ◽  
Nikolay Boshkov ◽  
Nelly Boshkova ◽  
Daniela Stoyanova ◽  
Maria Shipochka ◽  
...  

Author(s):  
Brian D. Hawkes ◽  
Kenneth R. Durstine

A shielded cask is used to transport radioactive materials between facilities. The cask was fabricated with an outer and inner shell of hot rolled low carbon steel. Lead was poured in the annular space between the shells to provide radiation shielding. Carbon steel is known to be susceptible to low-temperature brittle fracture under impact loading. This paper will present the analysis results representing postulated transportation accidents during on-site transfers of the cask. The accident scenarios were based on a series of cask drops onto a rigid surface from a height of 6 ft assuming brittle failure of the cask shell at subzero temperatures. Finite element models of the cask and its contents were solved and post processed using ABAQUS software. Each model was examined for failure to contain radioactive materials and/or significant loss of radiation shielding. Results of these analyses show that the body of the cask exhibits considerable ruggedness and will remain largely intact after the impact. There will be deformation of the main cask body with localized brittle failure of the cask outer shell and components and but no complete penetration of the cask shielding. The cask payload outer waste can will experience some permanent plastic deformation in each drop, but will not be deformed to the point where it will rupture, thus maintaining confinement of the can contents.


1991 ◽  
Vol 32 (1) ◽  
pp. 61-66
Author(s):  
Masamichi Yamagiwa ◽  
Motohiro Nakano ◽  
Toshihiko Kataoka ◽  
Kensaku Azuma ◽  
Keizo Kishida

2008 ◽  
Vol 584-586 ◽  
pp. 637-642 ◽  
Author(s):  
Masaki Tanaka ◽  
Naoki Fujimoto ◽  
Tatsuo Yokote ◽  
Kenji Higashida

The enhancement of toughness at low temperatures in fine-grained low carbon steel was studied, basing on the theory of crack-tip shielding due to dislocations. Low carbon steel was subjected to an accumulative roll bonding (ARB) process for grain refining. The grain size perpendicular to the normal direction was decreased to approximately 200nm after the ARB process. The fracture toughness of low carbon steel with the ARB process was measured at 77K by four-point bending, comparing with the fracture toughness of those without the ARB. It was found that the value of fracture toughness at 77K was increased by grain refining due to the ARB process, indicating that the ARB process enhances toughness at low temperatures and that the brittle-to-ductile transition (BDT) temperature shifted to a lower temperature. Quasi-two-dimensional simulations of dislocation dynamics, taking into account crack tip shielding due to dislocations, were performed to investigate the effect of a dislocation source spacing along a crack front on the BDT. The simulation indicates that the BDT temperature is decreased by decreasing the dislocation source spacing.


2018 ◽  
Vol 7 (2) ◽  
pp. 143-152 ◽  
Author(s):  
Seyyed Reza Amirabadizade ◽  
Shamsodin Shafinia ◽  
Hamed Sabet ◽  
Shamsodin Mirdamadi ◽  
Hossein Ebrahimnezhad-Khaljiri

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