Article
Materials Science, Multidisciplinary
Hideki Yuya, Ryoya Kobayashi, Kohei Otomo, Kiyohiro Yabuuchi, Akihiko Kimura
Summary: The microstructure and mechanical properties of HAZ of RPVS clad with duplex stainless steel were investigated, revealing the presence of a hardened area and a sharp hardness peak. The hardness peak width was approximately 30 μm and coincided with the high carbon concentration region on the cladding boundary.
JOURNAL OF NUCLEAR MATERIALS
(2021)
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
Materials Science, Multidisciplinary
Tushar Ramdas Dandekar, Amit Kumar, Rajesh Kisni Khatirkar, Jaiveer Singh, Deepak Kumar
Summary: The study reveals that aging treatment of UNS S32101 at 750 degrees Celsius leads to significant changes in the microstructure and mechanical properties of lean duplex stainless steel, including precipitate formation, decrease in impact energy, transition in fracture morphology, and alterations in tensile properties.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Nana Kwabena Adomako, Jeoung Han Kim
Summary: A lap joint was formed between a CoCrFeMnNi-high entropy alloy (HEA) and duplex stainless steel (DSS) using laser beam welding. The microstructure of the weld showed variations, with noticeable hardness fluctuations and a high tensile shear strength of 470 MPa.
Article
Nuclear Science & Technology
C. Pandey, J. G. Thakare, P. K. Taraphdar, P. Kumar, A. Gupta, S. Sirohi
Summary: The dissimilar weld joint of 2.25Cr-1Mo steel and lean duplex LDX2101 steel was prepared using Gas Tungsten Arc Welding (GTAW) process, and the microstructural stability and mechanical behavior of the weld were studied after post-weld heat treatment (PWHT). The PWHT caused the formation of a soft zone at the interface of the weld metal and heat-affected zone in the 2.25Cr-1Mo side, and resulted in changes in hardness and impact toughness measurements.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Materials Science, Multidisciplinary
S. G. Wang, S. Y. Liu, M. Sun, B. H. Tian, Z. D. Zhang
Summary: The tensile properties of nanocrystalline 304 stainless steel plate (NSSP-304) and its conventional polycrystalline 304 stainless steel (CPSS-304) counterpart were studied. NSSP-304 exhibited higher ductility, larger strengths, and more isotropic deformation compared to CPSS-304. The microstructures of fractured NSSP-304 and CPSS-304 were also analyzed, showing more stable and homogeneous microstructures in NSSP-304.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Yinhui Yang, Xiaoyu Pan
Summary: The effect of Mn/N ratio on microstructural evolution, mechanical and fracture properties in welding heat affected zone (HAZ) of 22% Cr lean duplex stainless steel (DSS) was investigated. It was found that increasing the Mn/N ratio promoted the growth of austenite and inhibited the formation of precipitates, leading to a decrease in strength and elongation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Barbara Elzbieta Kalandyk, Renata Elzbieta Zapala, Pawel Palka
Summary: This study investigates the changes in microstructure and mechanical properties of two-phase ferritic-austenitic cast steel after isothermal holding at 750 degrees C and 900 degrees C. The results show that holding at 900 degrees C leads to increased hardness and elongation, but decreased ultimate tensile strength compared to holding at 750 degrees C.
Article
Materials Science, Multidisciplinary
Claudio Gennari, Michele Forzan, Renato Gobbo, Stefania Bruschi, Vladimir Stolyarov, Irene Calliari
Summary: The study found that the duplex stainless steel exhibited increased fracture strain and uniform elongation under the influence of pulsed electrical current, while the ultimate tensile strength and yield strength were minimally affected.
Article
Nanoscience & Nanotechnology
Yongxin Wang, Lei Chen, Lizi Shao, Shuo Hao, Motomichi Koyama, Xingzhou Cai, Xiaocong Ma, Miao Jin
Summary: This study investigated the tensile deformation behavior of an Mn-N bearing lean duplex stainless steel with metastable austenite. The results showed that the strain rate had significant influence on the work hardening, strain-induced martensitic transformation, and fracture mechanism.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Engineering, Manufacturing
Pedro L. L. Santos, Julian A. Avila, Eduardo B. da Fonseca, Andre H. G. Gabriel, Andre L. Jardini, Eder S. N. Lopes
Summary: This study evaluated the aging effects on the mechanical properties of 18Ni (300) maraging steel processed by additive manufacturing. The alloy showed an increase in hardness, compressive strength, and tensile strength, while the work-hardening ability decreased with aging.
ADDITIVE MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
S. Ghadar, A. Momeni, E. Khademi, Sh. Kazemi
Summary: The study found that temperature and strain were crucial to the microstructural evolutions in the processing of 2205 duplex stainless steel, with the major microstructural evolution being dynamic globularization. Hardness was highest in the stir zone and decreased through the thermomechanical and heat affected zones, with the highest hardness observed at 1000 RPM and 12 mm/min. Tensile test results showed that ultimate tensile strength and fracture strain were improved after friction stir processing, with an increase in rotation speed and decrease in traverse speed leading to higher UTS and fracture strain.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Norimitsu Koga, Tatsuya Nameki, Osamu Umezawa, Valentin Tschan, Klaus-Peter Weiss
Summary: The study demonstrates that the tensile properties of commercial ferrite and austenite duplex stainless steel improve at lower temperatures, except at 40K. The steel exhibits high elongation at 8K compared to other test temperatures, due to the occurrence of serration which increases the volume fraction of deformation induced martensite.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Shuo Hao, Lei Chen, Yongxin Wang, Wenbin Zhang, Junfeng She, Miao Jin
Summary: In this study, the tensile deformation behavior and fracture characteristics of a hot-rolled lean duplex stainless steel with metastable austenite were investigated for different loading directions. The results showed that the material exhibited significant mechanical anisotropy, which was attributed to strain-induced martensitic transformation and different strain partitioning response.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Shuo Hao, Lei Chen, Qixiang Jia, Wenbin Zhang, Yongxin Wang, Miao Jin, Shu Guo
Summary: The tensile behavior and the influence of strain-induced martensite transformation (SIMT) on a lean duplex stainless steel were studied. A new method was proposed to evaluate the strength increment induced by SIMT. The results showed that SIMT activation significantly increased the strength of the material.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Mechanical
Chandan Pandey, Manas Mohan Mahapatra, Pradeep Kumar, Sachin Sirohi
ENGINEERING FAILURE ANALYSIS
(2019)
Article
Engineering, Industrial
Chandan Pandey, M. M. Mahapatra, Pradeep Kumar, S. Kumar, Sachin Sirohi
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2019)
Article
Nuclear Science & Technology
Sachin Sirohi, Chandan Pandey, Amit Goyal
FUSION ENGINEERING AND DESIGN
(2020)
Article
Nuclear Science & Technology
C. Pandey, J. G. Thakare, P. K. Taraphdar, P. Kumar, A. Gupta, S. Sirohi
Summary: The dissimilar weld joint of 2.25Cr-1Mo steel and lean duplex LDX2101 steel was prepared using Gas Tungsten Arc Welding (GTAW) process, and the microstructural stability and mechanical behavior of the weld were studied after post-weld heat treatment (PWHT). The PWHT caused the formation of a soft zone at the interface of the weld metal and heat-affected zone in the 2.25Cr-1Mo side, and resulted in changes in hardness and impact toughness measurements.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Engineering, Manufacturing
S. Sirohi, C. Pandey, A. Goyal
Summary: The current investigation focused on the relationship between microstructure and mechanical properties of dissimilar Gas Tungsten Arc Weld (GTAW) joint of heat-resistant ferritic/martensitic P91 and austenitic SS304H steel, using Ni-grade ERNiCrMo-3 filler. The results showed a heterogeneous microstructure formation across the weldments, leading to variation in mechanical behavior. In the as-welded condition, the weld metal exhibited high tensile strength and Charpy impact toughness, with improvements in mechanical properties observed after post-weld heat treatment (PWHT).
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
S. Sirohi, P. Kumar, A. Gupta, S. Kumar, C. Pandey
Summary: The study aims to investigate the impact toughness of P91 welds joint using Ni-based fillers. Both IN617 and IN718 fillers showed uniform distribution of particles inside the weld metal.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
S. Kumar, S. Sirohi, J. G. Thakare, B. Adhithan, C. Pandey
Summary: The research investigated the effect of PWNT treatment on microstructure evolution and fracture characteristics of P91 welds joint under creep exposure condition. The results showed a significant impact on fracture characteristics, shifting from soft ICHAZ to overtempered base zone, with inter-metallic Laves phase observed in each region of the weldments.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
Sachin Sirohi, Sanjeev Kumar, Chandan Pandey
Summary: This paper characterizes thermal barrier ceramic coatings (TBCs) formed using detonation gun, consisting of nickel chromium (Ni-Cr) as bond coat and aluminum oxide (Al2O3) as top coat. The microstructure at interfaces was analyzed using SEM, and performance evaluation and hot corrosion behavior were studied through thermal cycling. Thermally grown oxide layer and element analysis were also conducted after thermal cycles.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Metallurgy & Metallurgical Engineering
Chandan Pandey, S. Sirohi, M. M. Mahapatra, Pradeep Kumar, K. K. Bansal
METALLOGRAPHY MICROSTRUCTURE AND ANALYSIS
(2019)
Article
Metallurgy & Metallurgical Engineering
Sachin Sirohi, Chandan Pandey, Amit Goyal
ARCHIVES OF METALLURGY AND MATERIALS
(2020)
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)
