Article
Nanoscience & Nanotechnology
Ceyhun Kose, Ceyhun Topal
Summary: In this study, laser beam welding technique was used to join AISI 2507 super duplex/AISI 317L austenitic stainless steels. The effects of heat input and post weld heat treatment (PWHT) on surface, texture, microstructure and mechanical properties were investigated. The results showed that the weld metal exhibited a duplex microstructure, while ferrite and austenite grains were detected in the base metal. The increase in heat input led to a decrease in tensile strength, hardness, and bending force, but an increase in toughness values in the welded samples. PWHT resulted in a reduction in tensile strength and hardness, as well as changes in the microstructure and orientation relationships.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Automation & Control Systems
Lulu Wang, Pengcheng Zhao, Jiajing Pan, Long Tan, Kaixing Zhu
Summary: Double-sided synchronous TIP TIG arc butt welding (DSSTTABW) is used to join 5-mm SAF 2205 duplex stainless steel (DSS) plates, resulting in sound joints with excellent appearance and properties. The weld metal contains a deal of second austenite and sigma phase, leading to an increment of austenite volume fraction in the weld zone; the DSSTTABW weldment exhibits higher tensile strength and microhardness but lower ductility compared to the base metal.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Ceyhun Kose, Ceyhun Topal
Summary: This study investigates the weldability of AISI 2507 super duplex stainless steel sheets using laser welding. The impact of heat inputs and post-weld heat treatment on the mechanical properties and microstructure of the joints was analyzed. It was found that samples welded with lower heat input exhibited higher microhardness and tensile strength values. Additionally, post-weld heat treatment resulted in decreased hardness and tensile strength but improved toughness and ductility properties.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Shuwan Cui, Shuwen Pang, Dangqing Pang, Qin Zhang, Zhiqing Zhang
Summary: This paper successfully welded 8 mm thickness 2205 duplex stainless steel plates using K-TIG welding, and confirmed the accuracy of experiments through numerical simulations. The results indicated that a combined model of ellipsoid and conical heat sources is more suitable for K-TIG welding. The impact of welding speed on microstructure and grain size of welded joint was observed, with simulation results consistent with experimental findings, validating the effectiveness of the simulation method for guiding K-TIG welding processes.
Article
Materials Science, Multidisciplinary
Yumeng Zhang, Qing Zhang, Yabo Wang, Xiaodong Wang
Summary: With the increase in strength of stainless steel, the use of stainless steel for structural components has also increased, making welding problems more important. This study characterized the microstructure of gas tungsten arc welding (GTAW) welded duplex stainless steel (DSS) using scanning electron microscope (SEM), electron backscatter diffraction (EBSD), and nanoindentation. The results showed that the welded DSS had high yield strength, ultimate tensile strength, and sufficient plasticity. The investigation of the microstructure origin related to the mechanical properties of the welded joint may provide insights for improving the welding process.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Physical
Shuwan Cui, Yunhe Yu, Fuyuan Tian, Shuwen Pang
Summary: This study focuses on the production of S32101 duplex stainless steel welded joints using a K-TIG welding system. The geometry parameters and microstructure of the weld under different welding speeds were analyzed. The experimental results show that welding speed affects the geometry profile of the weld and that the characteristic parameters of the keyhole can effectively predict the weld profile. The impact property of the weld metal zone is influenced by the microstructure, Sigma 3 coincidence site lattice grain boundary, and phase boundary of ferrite and austenite.
Article
Chemistry, Physical
Przemyslaw Zmitrowicz, Michal Kawiak, Pawel Kochmanski, Jolanta Baranowska
Summary: The K-TIG method is a new welding technology that offers accelerated joining process, but its potential for welding certain materials remains unknown. Studies on single-pass welding of 1.4462 duplex steel using K-TIG showed that the weld joints met standards, although further optimization is needed.
Article
Materials Science, Multidisciplinary
Kamel Touileb, Rachid Djoudjou, Abdeljlil Chihaoui Hedhibi, Abousoufiane Ouis, Abdallah Benselama, Albaijan Ibrahim, Hany S. Abdo, Ubair Abdus Samad
Summary: This study analyzed the effects of pseudo-component fluxes on dissimilar welded joints of stainless steel and mild steel, and found that the optimal flux combination improved the mechanical properties of the weld without degrading corrosion resistance. In the activated tungsten inert gas (ATIG) process, the weld depth was achieved in a single pass without the need for edge preparation or the addition of a filler metal.
Article
Chemistry, Physical
Shuwan Cui, Shuwen Pang, Dangqing Pang, Fuyuan Tian, Yunhe Yu
Summary: In this study, the microstructure and pitting corrosion resistance of S32101 duplex stainless steel welded joints were investigated. The findings indicated that increasing heat inputs led to more conversion of ferrite to austenite and an increase in the number and size of intragranular austenite grains. The pitting corrosion resistance of the weld metal zone and the heat affected zone improved with the increase of heat inputs. The presence of CrN and Cr2N precipitates in the ferrite and austenite/ferrite interfaces contributed to the enhanced pitting corrosion resistance.
Article
Automation & Control Systems
Jairo Alberto Munoz, Mohan Chand, Javier Walter Signorelli, Jessica Calvo, Jose Maria Cabrera
Summary: This study investigates the microstructural evolution, plastic anisotropy, and mechanical behavior of a duplex stainless steel processed by the ECAP technique. The results show that the ECAP processing led to the formation of ultrafine grains with grain sizes smaller than 300 nm in both austenite and ferrite phases. The different strain hardening rates of austenite and ferrite result in plastic instabilities at different strain magnitudes, with austenite providing more hardening while ferrite contributes to ductility. Additionally, crystal plasticity simulations reveal that austenite is more responsible for larger planar anisotropy values compared to ferrite after multiple ECAP passes.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Xianhang Huang, Chi Tat Kwok, Ben Niu, Jiangling Luo, Xiaodong Zou, Yi Cao, Jianglong Yi, Linlin Pan, Wenfeng Qiu, Xueying Zhang
Summary: This study investigates the anisotropic behavior of super duplex stainless steel (SDSS) thin-wall components fabricated by wire arc additive manufacturing (WAAM). The results show that the mechanical properties and corrosion behaviors of WAAMed SDSS are anisotropic, which are caused by the differences in crystal features due to the repeated thermal cycles inherent to the WAAM process.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Laihui Han, Tao Han, Guangxue Chen, Bangyu Wang, Jianbo Sun, Yong Wang
Summary: The research utilizes the novel keyhole gas tungsten arc (K-TIG) welding technique to weld duplex stainless steel, demonstrating that appropriate control of welding parameters can effectively avoid welding defects, and an increase in heat input leads to an increased content of Widmansta?tten austenite in the weld joint.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Ceyhun Kose
Summary: In this study, 316L parts were produced by selective laser melting (SLM) method. Since SLM has size limits, welding was used as an alternative option to join the parts. Welding experiments were conducted on AM 316L and two types of stainless steel with superior mechanical properties. The results showed that the welded joints had a fine microstructure, but lower mechanical properties compared to the base metals.
Article
Materials Science, Multidisciplinary
Aziz Baris Basyigit
Summary: Duplex stainless steels are widely used in industries requiring high mechanical properties in corrosive environments. The composition of filler materials significantly affects the microstructural, mechanical, and corrosion properties of the weld metals.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Paula Munier Ferreira, Elaine Cristina Pereira, Flavia Wagner Pinheiro, Sergio Neves Monteiro, Afonso R. G. Azevedo
Summary: The objective of this study was to evaluate the effect of induction solution heat treatment using autogenous TIG welding on UNS S31803 DSS sheets. The best results were obtained with a treatment of 10 s at 1150 degrees C, which was able to eliminate chromium nitrides and re-establish the proper balance of the ferrite and austenite phases, also presenting a low corrosion rate.
Article
Engineering, Industrial
B. Mehdi, R. Badji, V. Ji, B. Allili, D. Bradai, F. Deschaux-Beaume, F. Soulie
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2016)
Article
Materials Science, Multidisciplinary
Nabil Kherrouba, Mabrouk Bouabdallah, Riad Badji, Denis Carron, Mounir Amir
MATERIALS CHEMISTRY AND PHYSICS
(2016)
Article
Materials Science, Multidisciplinary
B. Cheniti, D. Miroud, R. Badji, D. Allou, T. Csanadi, M. Fides, P. Hvizdos
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2017)
Article
Materials Science, Multidisciplinary
A. Ziouche, A. Haddad, R. Badji, M. Zergoug, N. Zoubiri, W. Bedjaoui, S. Abaidia
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2018)
Article
Metallurgy & Metallurgical Engineering
O. Mimouni, R. Badji, A. Kouadri-David, R. Gassaa, N. Chekroun, M. Hadji
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2019)
Article
Materials Science, Ceramics
A. Benamor, Y. Hadji, N. Chiker, A. Haddad, B. Guedouar, M. Labaiz, M. Hakem, A. Tricoteaux, C. Nivot, J. P. Erauw, R. Badji, M. Hadji
CERAMICS INTERNATIONAL
(2019)
Article
Nanoscience & Nanotechnology
Billel Cheniti, Djamel Miroud, Riad Badji, Pavol Hvizdos, Martin Fides, Tamas Csanadi, Brahim Belkessa, Malik Tata
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Article
Materials Science, Multidisciplinary
Nabil Kherrouba, Denis Carron, Mabrouk Bouabdallah, Riad Badji
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2019)
Article
Materials Science, Multidisciplinary
Oussama. Djema, Mabrouk. Bouabdallah, Riad. Badji, Amr. Saadi, Nabil. Kherrouba, Amane. Sahli
MATERIALS CHEMISTRY AND PHYSICS
(2020)
Article
Automation & Control Systems
Adel Boucherit, Said Abdi, Mouloud Aissani, Brahim Mehdi, Khadidja Abib, Riad Badji
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2020)
Article
Automation & Control Systems
Riad Badji, Bellel Cheniti, Charlie Kahloun, Thierry Chauveau, Mohammed Hadji, Brigitte Bacroix
Summary: The study investigated the hot forging behavior of a dual phase stainless steel in the temperature range of 850-1250 degrees C, revealing the effects on cracking phenomenon, grain boundary types, and mechanical properties. Higher forging temperatures improved the steel's plasticity and overall mechanical properties.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Brahim Mehdi, Nabil Kherrouba, Soumia Doufana, Riad Badji, Baya Alili
ACTA METALLURGICA SLOVACA
(2017)
Article
Materials Science, Ceramics
Y. Hadji, A. Tricoteaux, M. G. Ben Ghorbal, M. Yahi, R. Badji, T. Sahraoui, M. Hadji, M. W. Barsoum
CERAMICS INTERNATIONAL
(2017)
Proceedings Paper
Materials Science, Multidisciplinary
Oussama Mimouni, Riad Badji, Mohamed Hadji, Afia Kouadri-Henni
PROCEEDINGS OF THE 19TH INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING (ESAFORM 2016)
(2016)
Proceedings Paper
Engineering, Industrial
Oussama Mimouni, Riad Badji, Mohamed Hadji, Afia Kouadri-David, Hamel Rachid, Nabil Chekroun
NUMIFORM 2016: THE 12TH INTERNATIONAL CONFERENCE ON NUMERICAL METHODS IN INDUSTRIAL FORMING PROCESSES
(2016)
Article
Nanoscience & Nanotechnology
Ahmad Mirzaei, Peter D. Hodgson, Xiang Ma, Vanessa K. Peterson, Ehsan Farabi, Gregory S. Rohrer, Hossein Beladi
Summary: This study investigated the influence of parent austenite grain refinement on the intervariant boundary network in a lath martensitic steel. It found that refining the parent austenite grain led to a decrease in the fraction of certain boundaries in the martensite and an increase in the connectivity of low energy boundaries, ultimately improving the impact toughness.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
N. L. Church, C. E. P. Talbot, L. D. Connor, S. Michalik, N. G. Jones
Summary: Metastable beta Ti alloys based on the Ti-Nb system have attracted attention due to their unique properties. However, the unstable cyclic behavior of these alloys has hindered their widespread industrial use. Recent studies have shown that internal stresses, including those from dislocations, may be responsible for this behavior. This study demonstrates that inter-cycle thermal treatments can mitigate the unstable cyclic behavior, providing a significant breakthrough in our understanding of Ti-Nb superelastic materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Di Zhao, Chenchen Zhao, Ziyang Xiu, Jiuchun Yan
Summary: This study proposes a novel strategy for achieving the bonding of SiC ceramic and Al alloy using ultrasound. The ultrasound promotes the dissolution of Al into the solder, activating the solder and triggering the interfacial reaction between SiC ceramic and solder. With increasing ultrasonic duration, the bonding between SiC and Al transitions from partial to full metallurgical bonding.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Kang Du, Yang Zhang, Guangda Zhao, Tao Huang, Liyuan Liu, Junpeng Li, Xiyu Wang, Zhongwu Zhang
Summary: This paper systematically investigated the evolution of microstructure in Fe-Ni-Co-Al polycrystalline alloys and its effects on mechanical properties. The results revealed that the migration of grain boundaries in different processes is driven by different factors, which impacts the grain orientation and precipitate formation. In the process of directional recrystallization, grains with specific orientations grow in the grain boundary region and form the dominant orientation, while grains with lower migration rate form the minor orientation. The alloy produced through directional recrystallization exhibited good recoverable strain and superelastic strain, while the alloy produced through solid solution treatment showed no evident superelastic behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Edohamen Awannegbe, Liang Chen, Yue Zhao, Zhijun Qiu, Huijun Li
Summary: This study employed laser metal deposition to additively manufacture Ti-15Mo wt% alloy, and subsequently subjected it to post-fabrication uniaxial thermomechanical processing. The results showed that different zones in the microstructure remained after processing, and deformation mechanisms mainly involved slip and martensite formation. The compressive mechanical properties were found to be dependent on strain rate, with higher flow stress and compressive strength observed at higher strain rates. Grain structure homogenisation was not achieved, leading to anisotropic tensile properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Reza Khatib Zadeh Davani, Enyinnaya George Ohaeri, Sandeep Yadav, Jerzy A. Szpunar, Jing Su, Michael Gaudet, Muhammad Rashid, Muhammad Arafin
Summary: This research aims to investigate the effect of roughing and finishing reductions on crystallographic texture. The results show significant heterogeneity in the centerline region, with higher intensity of certain textures. Drop Weight Tear Test indicates that steel specimens with lower and medium reductions exhibit superior low-temperature impact toughness compared to steel with higher reductions. The electrochemical hydrogen charging experiments confirm the presence of internal hydrogen cracks only in steel with lower and medium reductions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Flavio De Barbieri, Denis Jorge-Badiola, Rodrigo Allende, Karem Tello, Alfredo Artigas, Franco Perazzo, Henry Jami, Juan Perez Ipina
Summary: This study examines the effect of Cr additions on the mechanical behavior of TWIP steel at temperatures ranging from 25°C to 350°C. The results indicate that different temperature-dependent strengthening mechanisms, including mechanical twinning, Dynamic Strain Aging, and slip bands, are at play. The stacking fault energy (SFE) influences the percentage of mechanical twinning, which in turn affects the strain hardening rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Hanlin Peng, Siming Huang, Ling Hu, Bingbing Luo, Liejun Li, Ian Baker
Summary: This study explores the weldability, microstructures, and mechanical properties of two L1(2)-nanoparticle-strengthened medium-entropy alloys after electron beam welding (EBW). The results show that strong yet ductile defect-free joints were produced, with larger grain sizes in the fusion zones compared to the heat-affected zones and base materials. Both EBWed MEAs exhibited high yield strengths, high ultimate tensile strengths, and good fracture strains at 77 K. The V-doping improved the cryogenic mechanical properties of the TMT MEA.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
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
Nanoscience & Nanotechnology
Jong Woo Won, Seulbi Lee, Hye-Jeong Choe, Yong-Taek Hyun, Dong Won Lee, Jeong Hun Lee
Summary: Cold-rolled pure titanium showed improved sheet formability after undergoing cryogenic-deformation treatment. This treatment increased the thinning capability of the titanium and suppressed cracking during sheet forming. The formation of twins during deformation contributed to high thinning capability and increased strength through grain refinement and dislocation accumulation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Handong Li, Lin Su, Lijuan Wang, Yanbin Jiang, Jiahui Long, Gaoyong Lin, Zhu Xiao, Yanlin Jia, Zhou Li
Summary: Homogenization heat treatment is a key procedure in controlling the second phase, enhancing composition uniformity, and workability of as-cast Cu-15Ni-8Sn alloy. This study found that electropulsing treatment (EPT) can significantly reduce treatment temperature and time, improve elongation and overall mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yuxuan Wang, Juntao Zou, Lixing Sun, Yunfei Bai, Zhe Zhang, Junsheng Cheng, Lin Shi, Dazhuo Song, Yihui Jiang, Zhiwei Zhang
Summary: A novel mechanical-heat-electricity synergistic method was proposed to enhance the mechanical properties of Cu-15Sn-0.3Ti alloy by forming annealing twins (ATs). The combination method of Rotary swaging (RS) and Electric pulse treatment (EPT) successfully induced recrystallization and refinement of the microstructure, leading to a significant increase in the strength of the alloy within a short time.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Zhiyi Ding, Jiangtao Xie, Tong Wang, Aiying Chen, Bin Gan, Jinchao Song
Summary: This study demonstrated the Ta-induced strengthening of CoCrNi-AlTi MEAs using nanoscale heterogeneous coherent precipitates. The addition of Ta and aging treatments significantly enhanced the mechanical properties of the alloy, including yield strength, ultimate tensile strength, and elongation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Z. Y. You, Z. Y. Tang, B. Wang, H. W. Zhang, P. Li, L. Zhao, F. B. Chu, H. Ding
Summary: The mechanical properties and microstructural evolution of C-doped TRIP-assisted HEA under dynamic loading conditions were systematically investigated in this study. The results showed that dynamic tensile deformation led to an increase in yield strength and a decrease in ultimate tensile strength, with a trend towards increased total elongation. The primary deformation mechanisms shifted from TRIP and TWIP effects to deformation twinning and dislocations. The presence of carbides formed through C-doping hindered dislocation slip and promoted the activation of multiple twinning systems.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Feng Qin, Feihu Chen, Junhua Hou, Wenjun Lu, Shaohua Chen, Jianjun Li
Summary: Plastic instability in strong multilayered composites is completely suppressed by architecting nanoscale BCC Nb crystalline-amorphous CuNb interfaces.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)