Article
Nanoscience & Nanotechnology
Nirosha D. Adasooriya, Wakshum Mekonnen Tucho, Erlend Holm, Terje Arthun, Vidar Hansen, Karl Gunnar Solheim, Tor Hemmingsen
Summary: The mechanical properties of tempered high strength carbon steel (AISI 4130) affected by hydrogen embrittlement were investigated using slow strain rate tensile tests. Results showed significant influences of hydrogen charging and tempering temperatures on the hardness and fracture characteristics of the steel.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Sang-Gyu Kim, Jae-Yun Kim, Byoungchul Hwang
Summary: The effect of tempering temperature on the hydrogen embrittlement characteristics of SCM440 tempered martensitic steels was investigated. Microstructure, hydrogen desorption behavior, and hydrogen embrittlement resistance were analyzed. It was found that an increasing tempering temperature led to improved hydrogen embrittlement resistance due to changes in microstructure and trap sites for hydrogen.
Article
Engineering, Mechanical
L. Claeys, I De Graeve, T. Depover, K. Verbeken
Summary: In-situ tensile testing of electrochemically hydrogen charged 304L stainless steel at different crosshead displacement rates results in different elongation at fracture compared to air, with increased ductility at higher engineering strain rates. The enhanced martensitic transformations with hydrogen provide opportunities for creating hydrogen resistant materials. Tensile pre-straining increases HE susceptibility due to stress concentrations and alpha'-martensite.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2021)
Article
Materials Science, Multidisciplinary
Hanna Yang, Thanh Tuan Nguyen, Jaeyeong Park, Hyeong Min Heo, Junghoon Lee, Un Bong Baek, Young-Kook Lee
Summary: In this study, the resistance to hydrogen embrittlement of STS 304 austenitic stainless steel was investigated. The results showed that the resistance decreased with decreasing temperature and disappeared below -150 degrees C. The occurrence of hydrogen embrittlement at temperatures from 25 to -50 degrees C was attributed to strain-induced martensitic transformation and hydrogen diffusion into stress-concentrated regions.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Ning Zhao, Qiangqiang Zhao, Yanlin He, Rendong Liu, Weisen Zheng, Wenyue Liu, Yu Zhang
Summary: Two cost-saving marine steels with 1000 MPa yield strength were investigated for hydrogen embrittlement behavior using electrochemical technique. The hydrogen embrittlement resistance of steel B was found to be superior to steel A, potentially due to the presence of more nano-sized NbC particles. Additionally, the interface between carbide and matrix played a significant role in hydrogen trapping.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
A. Conde, J. J. de Damborenea, J. M. Lopez-Escobar, C. Perez-Arnaez
Summary: Alloy hardened steels offer excellent mechanical properties, hardenability, and corrosion resistance. 34CrMo4 steel is widely used due to its high-strength, toughness, and wear resistance, but it experiences significant losses in mechanical properties due to hydrogen embrittlement, especially when combined with stress.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Mechanical
D. Harandizadeh Najafabadi, A. Barabi, D. Thibault, M. Brochu
Summary: In this study, the influence of hydrogen on the fatigue crack propagation rate in tempered martensitic stainless steel was investigated. An original model was proposed and validated through experiments. The results showed that there is a critical stress intensity factor range at which the impact of hydrogen on the fatigue crack propagation rate is maximum.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Article
Engineering, Mechanical
V. Arniella, G. Alvarez, J. Belzunce, C. Rodriguez
Summary: The extensive use of hydrogen derived from renewable energy sources is limited by the lack of effective storage and transport solutions. To manufacture safe and reliable storage vessels and pipes, steels that can withstand hydrogen gas environments at high pressure are needed. The mechanical behavior of 2205 duplex stainless steel was studied through various tests, and the hydrogen embrittlement indexes were analyzed.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Shenguang Liu, Weijie Wu, Hao Fu, Jinxu Li
Summary: This study examines the equality in assessing the strength of hydrogen-assisted fractures using slow strain rate tensile (SSRT) and constant load tensile (CLT) methods for three precipitation-hardened martensitic stainless steels with different sized second-phase particles. SSRT showed higher fracture strength than CLT for PH13-8Mo and 17-4PH with nano-sized precipitates. However, for 15-6PH with both nano-sized precipitates and large-sized carbides, cracks at the larger-sized carbide/matrix interface resulted in lower fracture strength for SSRT. Additionally, we conclude that the hydrogen-assisted threshold fracture strength of CLT can be estimated by using SSRT when there are no large-sized particles present in high-strength steels.
Article
Crystallography
Ladislav Falat, Lucia Ciripova, Ivan Petryshynets, Ondrej Milkovic, Miroslav Dzupon, Karol Koval'
Summary: In this study, the effects of electrochemical hydrogen charging on the hydrogen embrittlement (HE) resistance of 316H austenitic stainless steel were investigated. The results showed that the HE of the studied material was small. It was also found that the degradation of deformation properties in plastically pre-strained and hydrogen-charged materials was mainly caused by gradual plasticity exhaustion due to tensile straining.
Article
Nanoscience & Nanotechnology
Jang Woong Jo, Jae Nam Kim, Chong Soo Lee
Summary: This paper presents a method to increase the hydrogen-embrittlement resistance of martensite steel using partial phase transformation and tempering. The resulting dual-tempered martensitic (DTM) steel showed higher HE resistance and strength compared to conventional tempered martensite (TM) due to the presence of specific precipitates.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Qian Yan, Luchun Yan, Xiaolu Pang, Kewei Gao
Summary: This study investigated the influence of Cu precipitations on hydrogen trapping capability and hydrogen embrittlement (HE) in aged martensitic stainless steel. The results showed a significant decrease in the hydrogen diffusion coefficient and a substantial increase in the hydrogen content in specimens containing Cu precipitations. The specimens with peak-aged (1 h) Cu precipitations exhibited the highest HE susceptibility, as a result of abundant hydrogen trapped by coherent Cu precipitations with the matrix and escaped during the tensile process.
Article
Nanoscience & Nanotechnology
Pingda Xu, Chongyang Li, Wei Li, Maoyuan Zhu, Ke Zhang
Summary: NbC carbide precipitation can effectively enhance the hydrogen embrittlement resistance and yield strength of high strength steel with the appropriate processing techniques. Retained austenite phases with different morphologies and locations exhibit varying hydrogen trap capabilities, while ferrite phase shows weaker hydrogen trapping ability.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Thorsten Michler, Tomas Freitas, Heiner Oesterlin, Carl Fischer, Ken Wackermann, Fabien Ebling
Summary: In this study, eight commercial austenitic stainless steels were tested under different conditions. The results showed that the 0.2 yield strength and ultimate tensile strength were comparable for all configurations. The reduction of area of conventional specimens (CS) was higher than that of tubular specimens (TS) in the reference atmosphere, but lower in gaseous high-pressure hydrogen. Under gaseous hydrogen precharged condition, the reduction of area was comparable between CS and TS for severely affected grades. The differences in necking behavior between CS and TS can be explained by the competition between necking and hydrogen assisted crack initiation and growth, especially in high pressure hydrogen gas.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Akari Komatsu, Masanori Fujinami, Masaharu Hatano, Kazuhisa Matsumoto, Mitsuki Sugeoi, Luca Chiari
Summary: The research revealed that hydrogen-induced vacancies formed in high-strain regions are the crucial factor in hydrogen embrittlement of austenitic stainless steel 316L.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Multidisciplinary
Abraham Mensah, Srinivas Sriramula
Summary: This paper proposes a pathway for developing efficient performance functions to evaluate the probability of failure for interacting pipeline corrosion clustering defects using a probabilistic finite element-based reliability method. The framework reduces computational cost and offers informed decision-making on risk and maintenance management.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2024)
Article
Engineering, Multidisciplinary
Baozhu Zhang, Wenchun Jiang, Yun Luo, Wei Peng, Yingjie Qiao
Summary: This paper studies the distribution of residual stress in thick wall girth welds using narrow-gap welding. The study finds that the heat input, wall thickness, radius thickness ratio, and number of welding passes have an effect on residual stress. A model for the distribution of welding residual stress through the wall thickness is proposed, and its results are in good agreement with finite element calculation results.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2024)
Article
Engineering, Multidisciplinary
Stefan Culafic, Darko Bajic, Tasko Maneski
Summary: This paper presents experimental research on a branch model conducted in laboratory conditions. The study verifies the linear relationship between stress and internal pressure in the field of elasticity and reveals the occurrences when stresses exceed the yield strength of the branch material, such as plastic deformations of the branch model. The research also defines the dependence of stress on internal pressure in both the field of elasticity and the zone of residual stresses.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2024)
Article
Engineering, Multidisciplinary
Wenchun Jiang, Wenlu Xie, Xinyue Qi, Yangguang Deng, Yu Wan, Xuefang Xie
Summary: Various types of solid-state phase transformations (SSPT) occur during the SA508 steel welding process, leading to complex microstructure distribution and significant influence on residual stress distribution. To better control microstructure and residual stress, optimization of process parameters related to welding thermal cycles is necessary.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2024)