... ABSTRACT In a hydrogen pipeline, flaws can initiate from the ID surface, which is in contact with hydrogen gas, and extend toward the OD of the pipe. In this study, CT specimens with the T-L orientation and SENB specimens with the T-S orientation were used in fracture toughness tests...

... suddenly (e.g. by cleavage) then there may be a reduction of fracture toughness due to dynamic loading. In order to examine the dynamic effect of cleavage fracture on failure, a vintage pipe X52 steel of relatively high ductile-to-brittle transition temperature was tested using single-edge notch tension...

...). This study focuses on fracture toughness evaluation, examining HT80, a high-strength carbon steel candidate material, and assessing the challenges posed by current post-weld heat treatment (PWHT) regulations (NEDO, 2021), which hinder tank scalability. First, an experimental approach was employed to collect...

... ABSTRACT A high-strength steel plate for medium-pressure liquefied carbon dioxide (LCO 2 ) tanks that corresponds to EN10028-6 P690QL2 was developed. The developed steel has excellent strength and sufficient fracture toughness at -35 °C, the assumed design temperature for medium-pressure LCO 2...

..., and annealing, were applied to investigate their effects on the low-temperature behavior of pipe fittings. The results indicate that normalizing significantly enhances the low-temperature toughness of fittings made from L245 seamless pipe, while annealing is more effective for L360 steel to ensure appropriate...

... coupons for most mechanical property tests used to quantify strength, ductility, fracture toughness and fatigue under hydrogen gas environments. In addition, when testing under hydrogen, typically all test specimen surfaces are exposed to hydrogen gas whereas in actual pipeline applications only...

... compatibility hydrogen retrieved vintage steel hydrogen energy fracture toughness offshore pipeline corrosion inhibition toughness embrittlement canada Proceedings of the Thirty-fourth (2024) International Ocean and Polar Engineering Conference Rhodes, Greece, June 16 21, 2024 Copyright © 2024...

... pipeline integrity properties such as ductility, fracture toughness and fatigue performance. This paper summarizes the type of tests and the results of a testing campaign started in 2021 with the scope to verify and qualify a typical steel material with seam welds and fabricated girth welds for high...

... geologist reservoir geomechanics multi-peak amplitude cumulative plasticity numerical simulation toughness olr experiment steel Proceedings of the Thirty-fourth (2024) International Ocean and Polar Engineering Conference Rhodes, Greece, June 16 21, 2024 Copyright © 2024 by the International...

... ABSTRACT The effect of deformation-induced martensitic transformation on the cryogenic toughness of welds of austenitic stainless steel, which is a promising candidate material for large liquefied hydrogen storage tank materials, was investigated. From the results of microstructural...

... treatment conditions on the cryogenic toughness of 5% nickel steel Jong Chul Kim, Jung Bin Park, Hyung Sub So, Min Ho, Park, Woo Hyuk Choi, Seung Hwan Cheon Heavy Plate Development Team, R&D Center, Hyundai Steel Dangjin-Si, Chungnam, Korea ABSTRACT This study reports recent development status for 5% nickel...

... ABSTRACT Nickel significantly enhances the toughness of steel, making it ideal for applications requiring high resistance to brittle fracture. The presented study focuses on assessing the fracture toughness behaviour of nickel alloy steel 1.5662 (X8Ni9), specifically with thicknesses of 15 mm...

... a ductility-based pre-screening for high pressure gaseous hydrogen fracture toughness performance along with the optimum steel metallurgical alloy and processing strategy for creating sufficient ductility fracture toughness/crack arrest for critical pipeline applications of hydrogen and CO2 transmission...

... ABSTRACT The 7%Ni-TMCP steel is a recently developed low-nickel steel plate for liquefied natural gas (LNG) tanks, and its application for ships is expected to increase. In this study, various properties of 7%Ni-TMCP steel, including fracture toughness and fatigue properties of flux-cored arc...

.... The required fracture toughness, K Ic (J) at 20 K was estimated to be 171 MPa√m, and both the base material and weld joints of the 15% Ni steel exhibited sufficient toughness. The potential application merit of 15% Ni steel is to reduce the steel weight of a large liquefied hydrogen tank instead of using...

... hydraulic fracturing hydrogen proceedings grain growth asia government steel mining united states government metals & mining toughness specimen microstructure fracture toughness ishikawa haz international pipeline conference nb addition linepipe steel fracture behavior...

... experiment weld access hole ductile crack international ocean japan government leg length saw stress triaxiality weld metal specimen horizontal notch fracture concentration point polar engineering conference low peak value asia government peak value thickness toughness aiscf6...

... ABSTRACT Duplex stainless steels are ideal for steel structures exposed to low temperatures and fatigue loading. However, it has to be guaranteed that brittle fracture is avoided in low temperature applications due to the fact that duplex stainless steel shows a toughness-temperature...

... ABSTRACT Fracture and fatigue testing was performed on the parent and weld material of a vintage offshore API 5L X60 pipeline to assess the impact of various pressures of H 2 . Fracture toughness values of samples exposed to H 2 environment were lower than in air. Fatigue performance...

... government hydrogen specimen steel guideline pipeline fracture resistance hydrogen pipeline offshore pipeline toughness fracture surface crack propagation hydraulic fracturing limit state loading rate h2pipe jip reduction deformation Proceedings of the Thirty-third (2023) International...