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
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
Wojciech Jamrozik, Jacek Gorka, Bernard Wygledacz, Marta Kiel-Jamrozik
Summary: This paper describes a method for assessing the temperature of a welded joint and proposes a credibility increase method for temperature measurement. The method reduces the influence of reflected temperature on the surface of the joint by using an infrared camera and comparing the results with finite element method simulations. The precise temperature values obtained allow for clustering of welded joints based on 3D features.
Article
Materials Science, Multidisciplinary
Yassar E. Mukhrish, Muhammad Asad, Muhammad Azhar Ali Khan, Faramarz Djavanroodi
Summary: This research investigates the use of an automated cladding welding machine for wire arc additive manufacturing (WAAM) of a semi-cylindrical part. The study aims to evaluate the mechanical properties and microstructure of the manufactured part, as well as any potential changes in the properties of the employed Nickel wire. The results show that the hardness of the material is higher than the original wire, and the tensile and yield strengths are lowest in the direction across the thickness. The microstructure analysis reveals a high level of ductility in both parallel and perpendicular orientations to the deposition direction. This confirms the feasibility of using additive manufacturing for this super-alloy material without significant changes in its mechanical properties, with room for improvement by optimizing machine parameters.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Optics
Gulshad Nawaz Ahmad, Mohammad Shahid Raza, N. K. Singh, Gopinath Muvvala
Summary: In this study, welding of Inconel 625 and 2205 grade duplex stainless steel was carried out using a 2 kW Yb-fiber laser. The thermal history of the weld pool was logged using an IR pyrometer. The study found that the samples welded at the optimal parameters exhibited the highest tensile strength.
Article
Materials Science, Multidisciplinary
K. Devendranath Ramkumar, A. Vishnu Arvind, K. V. Rama Aravinth, E. Srivatson, Supriyo Ganguly
Summary: In this study, Inconel 718 joints were fabricated using the PDCGTAW and LAHW techniques. A post-weld heat treatment was performed on the joints, and liquation cracking was observed in the HAZ of the LAHW joints. The microstructural characteristics of the joints varied with different treatment conditions.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Jianfeng Wang, Yuying Chen
Summary: This study highlights the significant role of ultrasonic vibration in improving the microstructure and mechanical properties of as-welded duplex stainless steel, leading to the promotion of columnar-to-equiaxed transition and the achievement of fine equiaxed grains with no preferred crystallographic texture. The mechanisms of grain refinement were attributed to the production of initial nuclei or crystallites resulting from acoustic cavitation in the ultrasonic vibration of the weld pool. The resulting microstructure led to a significant increase in tensile strength and maintained acceptable ductility.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Harinadh Vemanaboina, Edison Gundabattini, Suresh Akella, A. C. Uma Maheshwer Rao, Ramesh Kumar Buddu, Paolo Ferro, Filippo Berto
Summary: In the context of the circular economy, welding of Ni-based superalloys is increasingly important for repairing high-cost components in sectors like defense and aerospace. Understanding the correct process parameters is crucial for avoiding metallurgical defects and premature failures. Experimental investigation on Inconel 625 butt-welded joints showed that lower welding speed and 3.3 kW laser power can achieve full penetration, while sound welds without porosity were obtained with 3.3 kW laser power. Full-penetration specimens displayed tensile strength similar to the parent material, with residual stresses and distortions increasing with heat input.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Mohamed M. Z. Ahmed, Khalil Hajlaoui, Mohamed M. El-Sayed Seleman, Mahmoud F. Elkady, Sabbah Ataya, Fahamsyah H. Latief, Mohamed I. A. Habba
Summary: The use of a high pin to shoulder ratio tungsten carbide tool can extend the tool life for friction stir welding of 2205 duplex stainless steel, resulting in defect-free joints with enhanced hardness and refined grain structure in the stir zone. Controlling the rotational rates, travel speeds, and downward forces can produce joints with higher yield strength and ultimate tensile strength compared to the base material.
Article
Chemistry, Physical
Young-Ran Yoo, Jae-Sung Kim, Young-Sik Kim
Summary: This study focused on the influence of welding and laser peening on the microstructural changes in 304L stainless steel and proposed a model for microstructural change by laser peening on welded 304L stainless steel.
Article
Chemistry, Physical
Wojciech Jamrozik, Jacek Gorka, Tomasz Kik
Summary: This paper proposes a technique for predicting joint hardness based on the sequence of thermogram acquired during the welding process. By analyzing the relationship between temperature, welding linear energy, and hardness, the predictions for joint hardness were accurate, with a low error rate in the joint area but exceeding 15% in the Heat Affected Zone (HAZ). Future work will focus on optimizing the model and input data for predicting HAZ hardness.
Article
Chemistry, Physical
Andre Alves Ferreira, Omid Emadinia, Joao Manuel Cruz, Ana Rosanete Reis, Manuel Fernando Vieira
Summary: This study produced a functionally graded material based on Inconel 625 and AISI 431 stainless steel powders using the DLD process, showing complex structure and smooth transition in hardness distribution across layers, with the heat-affected zone greatly influenced by preheating conditions.
Article
Materials Science, Coatings & Films
G. H. S. F. L. Carvalho, G. Venturini, G. Campatelli, E. Galvanetto
Summary: The present research focuses on strategies for cladding Inconel 625 on low-carbon steel using wire arc additive manufacturing (WAAM). Different welding parameters were analyzed to control and optimize penetration, geometry, dilution, and overall quality. Three deposition strategies were developed and the relationship between arc power and penetration and dilution was found to be more direct than heat input.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Mohamed M. Z. Ahmed, Khaled A. Abdelazem, Mohamed M. El-Sayed Seleman, Bandar Alzahrani, Kamel Touileb, Nabil Jouini, Ismail G. El-Batanony, Hussein M. Abd El-Aziz
Summary: This study investigates the feasibility of using friction stir welding (FSW) to weld duplex stainless steel (DSS) as a groove filling welding technique. Different groove designs were tested, with FSW producing defect-free joints using certain groove geometry. Compared to gas tungsten arc welding (GTAW), FSW joints exhibit higher strength and ductility.
Article
Multidisciplinary Sciences
Rosario Casanueva, Christian Branas, F. Javier Diaz, Francisco J. Azcondo, Diego Ferreno, Jesus Setien
Summary: This paper presents the characterization of a TIG welding process using an arc welding power supply based on resonant power converters and an FPGA-based control circuit. The performance of the proposed power supply was compared to a commercial welding machine, and the mechanical properties of the welded joints were examined. The results showed improved efficiency, power factor, and lower energy consumption with the proposed power supply, and the ductility of the welded plates using pulsed modes outperformed those using dc operation.
Article
Crystallography
A. Muthuraja, G. Murugesan, U. Reeta Felscia, Beulah J. M. Rajkumar, S. Kalainathan, V Ratchagar
Summary: High quality organic single crystals of 4,4'-DMB were successfully grown using the Bridgman technique, showing single-phase formation without impurities and an optical bandgap of 2.7 eV. Vickers microhardness measurements indicated that the crystal belongs to the soft material category, and studies on laser damage threshold and Z-scan technique were conducted to analyze the optical nonlinear properties of the grown crystal.
JOURNAL OF CRYSTAL GROWTH
(2022)
Article
Chemistry, Multidisciplinary
S. Suba Viveka, T. Logu, N. Ahsan, K. Asokan, S. Kalainathan, K. Sethuraman, Y. Okada
Summary: The impacts of electronic excitations from Au, Ag, and O ion beams on the properties of CGS thin films were studied. The irradiated films showed modifications in crystallinity, surface roughness, and optical properties. The Au-ion-irradiated CGS film exhibited the highest photocurrent and may be suitable for photovoltaic applications.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Karthikeyan Vijayan, Logu Thirumalaisamy, Run Fa Jonny Qiu, Myeongok Kim, S. P. Vijayachamundeeswari, Kalainathan Sivaperuman, Nazmul Ahsan, Yoshitaka Okada
Summary: CuGaS2 is a promising chalcopyrite semiconductor for thin-film photovoltaic devices. However, deposition at elevated temperatures results in sulfur desorption and the formation of defects. This study investigates the effect of Tellurium doping during deposition on crystallinity and optical properties. The results show improved crystallinity and electrical mobility with Te doping, and a decrease in the optical bandgap energy.
Article
Optics
A. Muthuraja, D. Bharath, G. Murugesan, D. Anbuselvi, S. Kalainathan
Summary: The optical properties and thermal characteristics of the organic single crystal Bioperine (BPN) were studied, and it was found to have high transparency and nonlinear optical parameters, making it suitable for optical switching applications in photonics.
OPTICS AND LASER TECHNOLOGY
(2022)
Review
Energy & Fuels
Karthikeyan Vijayan, S. P. Vijayachamundeeswari, Kalainathan Sivaperuman, Nazmul Ahsan, Thirumalaisamy Logu, Yoshitaka Okada
Summary: This review discusses the importance and innovations of thin-film-based solar cells as a sustainable energy source. It examines the physicochemical properties of thin-film materials deposited via spray pyrolysis and their application in solar cells. The review also analyzes the advancements and pros and cons of copper and non-copper thin film-based photovoltaics. Lastly, it provides insights into the future developments and recycling of thin-film based photovoltaics.
Article
Materials Science, Multidisciplinary
V Chandrasekar, K. Devendranath Ramkumar
Summary: The research article explains the impact of fillers on the microstructure and mechanical integrity evolution of dissimilar joints in stabilized austenitic stainless steels. The study reveals the observation of delta ferrite and precipitation of Mo-Nb and Mo-W rich phases in the heat-affected and fusion zones respectively. It also analyzes the fracture patterns and joint efficiencies influenced by different fillers.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Sameera J. Vaikar, Varun Narayanan, Joshy Chellathu George, T. C. Kanish, K. Devendranath Ramkumar
Summary: Pulsed direct current gas tungsten arc welding (GTAW) was used to weld 12 mm thick plates of naval, marine-grade high strength low alloy steel (HSLA) using ER80S-Ni3 filler metal. The microstructural analysis showed a mixed microstructure of acicular ferrite, polygonal ferrite, grain boundary ferrite, and bainite ferrite in the fusion zone. The PDCGTA weld joints exhibited superior yield and tensile strengths compared to the base metal, and a joint efficiency of 122% was observed during notch tensile studies. The impact toughness of the weld joints was higher than that of the base metal, and the formation of acicular ferrite and bainite ferrite contributed to better tensile and impact properties at room temperature. The joints also showed a transition from ductile to brittle fracture mode as the temperature decreased.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Mechanical
S. Senthur Prabu, S. Sujai, S. Prathiba, K. Devendranath Ramkumar, N. Arivazhagan
Summary: This study analyzes the microstructure and tensile properties of P91 steel used in the super-heaters of thermal power plants. The joints were fabricated using different welding methods and fillers. The results show that the choice of filler and welding method affects the microstructure and mechanical properties of the joints. The SMAW joints exhibit higher hardness and strength, while the GTAW joints exhibit better toughness.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2022)
Article
Crystallography
Rajesh Dora Tamiridi, Rajendra Goud, Prabhakaran Subramaniyan, Kalainathan Sivaperuman, Anand Kumar Subramaniyan, Indrajit Charit, Srikant Gollapudi
Summary: Laser shock peening of cold rolled Nitinol generates tensile surface residual stresses and increases surface microhardness. However, at a certain depth, the peened material has lower hardness than the as-received material due to the change in austenitic phase fraction caused by laser interactions.
Article
Crystallography
Nandhini Krishnan, Kalainathan Sivaperuman
Summary: A new organic stilbazolium compound, 4-[2-(3-methoxy-phenyl)-vinyl]-1-methyl-pyridinium(+) iodide(-) (MMPI), was successfully synthesized and characterized. The crystal structure and cell parameters of MMPI were determined using single crystal X-ray diffraction analysis. The synthesized material was confirmed by NMR spectroscopy and FT-IR spectrum analysis. The optical properties and surface characteristics of the MMPI crystal were investigated using various techniques such as optical analysis, chemical etching analysis, AFM, SEM, and Hirshfeld surface analysis. The nonlinear optical parameters and chemical activity of the crystal were also evaluated.
Article
Engineering, Electrical & Electronic
Balachandar Rajagopal Krishnamoorthy, Kalainathan Sivaperuman, Anand Sekar, Senthil Kannan
Summary: Schiff base crystal of 2-Methoxy-N-[4-(dimethyl amino) benzylidene] aniline (2MDA) was synthesized through condensation reaction and optically good quality single crystals were obtained after 7 days of slow evaporation process. Various characterizations confirmed the formation of the title Schiff base, and comparisons with previous reports indicated the formation of the 2MDA crystal. The crystal showed transparency in the range of 480-1100 nm and emitted red light at 625 nm, making it suitable for optical and opto-electronic applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Anju Thomas, Logu Thirumalaisamy, Sridharan Madanagurusamy, Kalainathan Sivaperuman
Summary: In this study, SnO2 thin films were deposited through spray pyrolysis and tested for gas sensing at 27℃ (room temperature) towards different gases. The films showed consistently low response of approximately 1 when exposed to various VOCs. Hall measurements were used to determine the type, concentration, and mobility of charge carriers, which were found to hinder its performance at room temperature.
Article
Chemistry, Multidisciplinary
Raji Vinayagamoorthy, Muthurakku Usha Rani, Sivaperuman Kalainathan, Sekar Anand
Summary: A novel third-order stilbazolium derivative single crystal, 4-[2-(4-dimethyl amino-phenyl)-vinyl]-1-methyl-pyridinium bromide (DMSB), was successfully harvested using methanol as a medium, through slow evaporation. The crystal structure of DMSB was confirmed to be monoclinic with centrosymmetric fashion. The DMSB crystal showed potential applications in photonics devices, optical computing, optical switches, and optical limiting, due to its favorable characteristics such as good solubility, molecular structure, absorbance nature, band gap, photoluminescence, and third-order nonlinear susceptibility.
Article
Chemistry, Multidisciplinary
Karthikeyan Vijayan, Logu Thirumalaisamy, S. P. Vijayachamundeeswari, Kalainathan Sivaperuman, Nazmul Ahsan, Yoshitaka Okada
Summary: This study investigates the impact of intermediate band structuring on the efficiency of solar cells using vanadium-incorporated copper gallium sulfide telluride thin films prepared via a chemical spray pyrolysis route. The results show that V - 0.1-incorporated CGST exhibits promising potential as a thin-film absorber layer in solar photovoltaic technology, with increased efficiency attributed to a decrease in bandgap.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Thangavel Ravikumar, Logu Thirumalaisamy, Sridharan Madanagurusamy, Sivaperuman Kalainathan
Summary: This study investigated the gas sensing capabilities of Mn-doped zinc ferrite thin film nanorods and found that ZFM1 showed high sensitivity and good selectivity and recovery towards TMA. The 0.1 Mn doped ZnFe2O4 film exhibited greatly enhanced gas sensing properties. This research demonstrates the effectiveness of ZF thin films in detecting TMA in the atmosphere.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
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)
