Article
Materials Science, Multidisciplinary
Zhi Jun Fan, Yin Zhong Shen, Zhi Qiang Xu, Peng Cheng Zhu, Huan Liu, Yu Fei Ma, Wen Qing Guan
Summary: This study investigates the application of ferritic/martensitic steel P92 in fuel cladding and duct structures, and analyzes the precipitation behavior of the steel at different treatment temperatures.
Article
Materials Science, Multidisciplinary
Yu Wang, Yongxin Jian, Rongbo Xu, Quansheng Wang, Xiaoming Zhang, Wenjing Dang, Zhifu Huang
Summary: The microstructure evolution and mechanical properties of P92 steel welded joint have been investigated in relation to the number of tempering cycles. The phase composition of the base metal, heat-affected zone, fusion zone, and weld metal is similar, with the presence of martensite laths, M23C6 precipitates, and tiny MX phase. However, delta-ferrite patches are found in the fusion zone. Increasing the number of tempering cycles leads to an increase in the area fraction and average size of M23C6 precipitates in the heat-affected zone and fusion zone. This results in a decrease in hardness, ultimate tensile strength, and yield strength, while the elongation improves to some extent. The reduction in solution strengthening, grain refinement strengthening, and precipitation strengthening is responsible for the strength degeneration of P92 steel welded joint with reduplicative tempering.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Wi-Geol Seo, Jin-Yoo Suh, Abhishek Singh, Jae-Hyeok Shim, Hansang Lee, Keunbong Yoo, Shi-Hoon Choi
Summary: This study investigated the microstructural development of the heat-affected zone in P92 heat-resistant steel during creep deformation in cross-weld specimen. It found that the FGHAZ II region, defined as a major change in microstructure during creep deformation, played a crucial role in cavity formation and fracture.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Xiaofeng Chen, Lijing Zheng, Shaochen Feng, Jing Li, Fangfang Wang, Hu Zhang
Summary: The microstructures, strength and toughness of CSS-42L bearing steel were investigated as a function of tempering temperature. It was found that the precipitation of M6C and M2C and the mechanical stability of retained austenite play important roles in determining the properties of the steel.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
M. Zorgani, C. Garcia-Mateo, M. Jahazi
Summary: Tempering at 500 °C resulted in a significant contraction in the dilatometric signal of the ausformed bainite samples, while tempering at 400 °C had minimal softening effects on both microstructures. The main mechanism governing microstructural changes during tempering at 500 °C was the decomposition of highly dislocated bainitic ferrite plates and retained austenite.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
M. Manokaran, Abhishek S. Kashinath, Jyoti S. Jha, Suraj P. Toppo, Rajkumar Singh
Summary: The Ti-stabilized austenitic stainless steel SS321 underwent stress rupture tests, showing shorter creep life at high temperatures and stresses, while the creep life increased at lower temperatures and stresses. This phenomenon may be related to the microstructure of the material and grain boundary sliding phenomenon.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Materials Science, Multidisciplinary
J. Vanaja, H. C. Dey, G. V. Prasad Reddy, K. Laha, M. Vasudevan
Summary: Microstructural features and creep-rupture behavior of a dissimilar weld joint (DWJ) between Grade 91 (G91) steel and 316LN stainless steel prepared by Electron beam (EB) welding are investigated. The study reveals compositional variations and distinct microstructural features in the fusion zone, as well as nickel enrichment at the interface between the fusion zone and G91 steel, resulting in fresh martensite and higher hardness. Creep-rupture tests show that failure location shifts from the G91 base metal to the intercritical HAZ of G91 steel, but the ruptured specimens in this study exhibit better interface stability and insignificant cavitation even after prolonged creep exposure.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Engineering, Manufacturing
Xing-Sheng Yu, Chuan Wu, Ru-Xing Shi, Ya-Sha Yuan
Summary: This study focused on analyzing the effects of heat treatment on the microstructural evolution and mechanical properties of 55NiCrMoV7 hot-work die steel to find an optimal heat treatment scheme. It was found that an excellent balance of mechanical properties was achieved in a quenching range of 850-870°C, with increasing tempering temperature resulting in decreased hardness and strength but increased ductility and impact toughness. This was further supported by fracture SEM observation and analysis, as well as predictions using a macro-micro coupled finite element modeling technique.
ADVANCES IN MANUFACTURING
(2021)
Article
Electrochemistry
Yunlong Wu, Sui Yuan, Jiayin Yan, Jiajun Liu, Jing Nong, Qi Guo, Jian Xu
Summary: The study utilized a solution with a NaOH concentration higher than 7 mol l(-1) to dissolve Laves phase precipitates in ASTM A335 P92 steel, and the amount of precipitates was obtained by potentiodynamically polarizing the sample and integrating the dissolution current over time. Results showed a good linear correlation between this method and traditional SEM observation, and the dissolution mechanism was discussed based on the electrochemical behavior of different materials in the strong alkaline solution.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Yunchao Li, Engang Wang, Lin Zhang, Yves Fautrelle, Xue Zhao, Xiao Guo, Daoqi Zhang
Summary: This study investigated the microstructure and mechanical properties of 60Si2CrVNb spring steel under different quenching and tempering processes. The results showed that the highest ultimate tensile strength and yield strength were achieved through austenitization at 900 & DEG;C and subsequent tempering at 350 & DEG;C. The optimal combination of mechanical properties was obtained by quenching at 900 & DEG;C for 30 min and tempering at 400 & DEG;C for 90 min, with improved tensile strength and plasticity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
C. G. Shang, M. L. Wang, Z. C. Zhou, K. Yagi, Y. H. Lu
Summary: In this study, uniaxial creep tests were conducted on P92 steel at 650 degrees C under different applied stresses. The microstructure evolution and its effect on the corresponding creep behaviors were investigated. It was found that different stress levels resulted in different creep behaviors due to the evolution of hierarchical martensite structure and precipitates, as well as their interaction with dislocations.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Wenting Wei, Jinzhe Ke, Zheng Liu, Guocheng Liu, Qinglong Liu, Dongsheng Qian, Lin Hua
Summary: This study investigates the influence of different tempering conditions on the fretting wear performance of M50 steel, finding that the tempering temperature affects wear behavior through martensite, retained austenite, and carbide transformations. The optimal fretting wear performance of M50 steel is achieved at 550 degrees C tempering.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Enyinnaya G. Ohaeri, Tonye Jack, Sandeep Yadav, Jerzy Szpunar, Jiming Zhang, Jinbo Qu
Summary: Heat treatment is suggested to improve microstructural properties for steels. Different quenching rates in brine and oil led to variations in microstructures, affecting the hardness values obtained after heat treatment. The quenching and tempering approach relieved high stored energy and retained key properties for safe pipeline operation, with reduced risks of HIC in oil quenched pipeline steels.
PHILOSOPHICAL MAGAZINE
(2021)
Article
Nanoscience & Nanotechnology
Jinbo Gu, Jingyuan Li, Jun Yanagimoto, Wang Li, Lihao Li
Summary: This study investigated the microstructural evolution and mechanical property changes of new nitrogen-alloyed Cr-Mo-V hot-working die steel during long-term tempering, and discussed the impact mechanism of nitrogen on tempering stability. Results show that nitrogen mainly improves tempering stability by enhancing precipitation hardening and grain refinement, with a significant effect on the allowed quenching temperature and carbides transformation during tempering process. The improving effect of nitrogen in precipitation hardening becomes more distinct with an increase in tempering time.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Crystallography
Stephen A. C. Hanson, Sudhakar Vadiraja
Summary: By investigating the tempering response of CPM (R) 3V tool steel, an optimal tempering temperature of 550 degrees C was identified to achieve improved strength while maintaining good tensile toughness.
Article
Polymer Science
Kavita A. Deshmukh, Swamini Chopra, Pranjali Khajanji, Abhay Deshmukh, D. R. Peshwe
Summary: Cryogenic treatment can significantly improve the mechanical properties of polymer composites without compromising their structural integrity. Glass fiber-reinforced and wollastonite-reinforced PBT composites show an increase in wear performance by approximately 84% and 96%, respectively, when treated at -185 degrees Celsius for 8 hours.
Article
Metallurgy & Metallurgical Engineering
Swamini Chopra, Kavita A. Deshmukh, Mitali V. Somvanshi, Neha V. Patil, Sidhdant R. Rakhe, Raju V. Sontakke, Saisha Batthula, Alekhya Phani Konda, Gauri Waghmare, Arabelli Anjali, Dilip Peshwe, C. L. Gogte, Pierpaolo Carlone
Summary: The study found that cryogenic treatment at -140 degrees Celsius for 12 hours significantly enhances the wear and impact resistance of UHMWPE without compromising its structural stability.Contrary to popular belief, a minimum of 24 hours cryo-treatment at -185 degrees Celsius is not necessary to induce the necessary changes in the polymer.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2021)
Article
Engineering, Mechanical
Deepshree D. Awale, V. D. Vijayanand, Atul R. Ballal, Manjusha M. Thawre, J. Ganesh Kumar, G. V. Prasad Reddy
Summary: Strength variations in a dissimilar weld joint made between 316LN stainless steel (SS) and P91 steel after creep exposure at 550 degrees C and stress of 200 MPa were estimated using automated ball indentation (ABI) test. Results showed that the creep exposure strengthened the 316LN SS side but caused a loss of strength in the P91 steel side. The ABI-derived results indicated that the intercritical-heat affected zone (IC-HAZ) of P91 steel was the weakest region across the weld after creep exposure.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Materials Science, Multidisciplinary
Deepshree D. Awale, V. D. Vijayanand, Atul R. Ballal, Manjusha M. Thawre, G. V. Prasad Reddy
Summary: The transition in microstructures of the heat affected zone (HAZ) of a P91-316LN SS dissimilar weld joint was studied using electron backscattered diffraction (EBSD). It was found that post weld heat treatment (PWHT) reduced the strain gradient in the HAZ region and localized softening occurred after PWHT.
Article
Chemistry, Applied
Ranjita S. Das, Anupama Kumar, Atul Wankhade, D. R. Peshwe
Summary: This study reports a chitosan-based zirconia hybrid composite that can efficiently degrade multiple contaminants under visible light irradiation. The material showed high degradation efficiency for Congo red, Methyl orange, and 4-hydroxybenzoic acid, and also demonstrated reusability and antibacterial ability.
CARBOHYDRATE POLYMERS
(2022)
Article
Engineering, Chemical
Swamini Chopra, Kavita Pande, Pritamkumar S. Tupe, Kanchan Zine, Kartik Rathod, Abhay Deshmukh, Dilip R. Peshwe
Summary: The study demonstrates a novel post-processing treatment using microwave radiations to improve mechanical properties of engineering polymers, including enhancement of crystal structures and tensile and tribological performance. Different types of polymers have varying optimal treatment times for microwave processing, with less time required for semicrystalline polymers and more time needed for amorphous polymers. Post-processing microwave treatment of polymers is proven to be beneficial in enhancing material properties significantly in a cost-effective, time-saving, and environment-friendly manner.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Nuclear Science & Technology
M. D. Mathew
Summary: Global warming is caused by the uncontrolled emissions of greenhouse gases, leading to a rise in the average temperature of the Earth's climate system. Nuclear power is a low carbon energy source that plays a significant role in low carbon economy and green energy grid. New innovations in nuclear power are making it a more affordable and attractive energy option.
PROGRESS IN NUCLEAR ENERGY
(2022)
Article
Engineering, Mechanical
Ramendra Kumar Gupta, Nitesh Vashishtha, S. G. Sapate, V Udhayabanu, D. R. Peshwe
Summary: In this study, the abrasive wear behavior of an Al-4.4 wt% Cu composite reinforced with 2 vol% graphite particles was investigated. The composite was prepared through Ultrasonic Treatment (UT) to achieve a uniform distribution of reinforcement particles. Wear tests were conducted on composites with and without UT treatment, as well as on the base alloy. The results showed that the composite with UT treatment exhibited higher coefficient of friction and wear resistance at 5 and 10 Newton loads compared to the base alloy. However, at 15 and 20 N load, the composite had lower COF and wear resistance. Micro-plowing and micro-cutting were identified as the two wear mechanisms for both the base alloy and the composites.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2022)
Article
Materials Science, Multidisciplinary
Ramendra Kumar Gupta, K. R. Ravi, V. Udhayabanu, D. R. Peshwe
Summary: In this study, 7075-2 vol% Gr(p) composites were synthesized by stir casting technique, and ultrasonic treatment was applied to the composite melt to improve the microstructure and mechanical properties of the composites.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Composites
Alok Behera, Manjusha M. Thawre, Atul Ballal, C. M. Manjunatha, Dinesh Krishnakumar, Shardul Chandankhede
Summary: This article investigates the prediction accuracy of constant life diagrams (CLDs) for fiber-reinforced plastics and proposes a modified piecewise linear CLD that shows the highest accuracy compared to traditional piecewise and anisomorphic CLDs.
POLYMER COMPOSITES
(2023)
Editorial Material
Metallurgy & Metallurgical Engineering
Chacko Preno Koshy, M. D. Mathew, Satish Vasu Kailas
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Article
Chemistry, Physical
Kavita A. Deshmukh, Swamini Chopra, Pranjali Khajanji, Vishakha Gaidhani, Undeti Gopichand, Anjali Gawande, Sakshi Turkar, Falguni Khodaskar, Abhay D. Deshmukh, D. R. Peshwe
Summary: The study aimed to enhance the tribological performance of epoxy composites by incorporating different fillers, with C3N4 reinforced composites showing exceptional performance, improving wear resistance by approximately 25%.
APPLIED SURFACE SCIENCE ADVANCES
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
Lakshmiprasad Maddi, Rishi Shivhare, Vijay Kumar, Manish Goel, Mridula Ramesh, Atul Ballal
Summary: P92 steels are considered as candidate materials for Ultra Super Critical power plants, and are typically used in the normalized and tempered condition. The study showed that after normalization, the decrease in dislocation density, increase in lath width, and precipitate size are predominant microstructural changes.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
Swamini Chopra, Vyshnavi Ramanadham, Sai Prasanna Vullengala, Shruti Tiwari, Komal Lad, Kavita A. Deshmukh, D. R. Peshwe
MATERIALS TODAY-PROCEEDINGS
(2020)
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)
