Article
Materials Science, Multidisciplinary
Ahmad Keyvani, Majid Naseri, Omid Imantalab, Davood Gholami, Kazem Babaei, Arash Fattah-alhosseini
Summary: This study investigates the effects of constrained groove pressing (CGP) on pure copper in a quiescent phosphate buffer solution, demonstrating improvements in passive behavior and reduced corrosion current density with increased CGP cycles. Microstructural, electrochemical, and mechanical characterizations were conducted to analyze the impact of CGP on copper material properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Nanoscience & Nanotechnology
Jianbo Jia, Zhigang Yang, Bo Xu, Wentao Xie, Yan Xu, Junting Luo, Qiang Wang
Summary: In this study, a corrugated constrained groove pressing (CCGP) technology based on a semicircle groove was utilized to improve the uniformity of strain accumulation in deformed metal sheets. The effects of strain route and deformation pass on the microstructure evolution and mechanical properties of the CCGPed alloy were investigated. Results showed that the CCGPed sheet exhibited improved strength and hardness, but reduced ductility. Cross-CCGP was effective in alleviating the anisotropy of the deformed sheet and achieving optimal strength in different directions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Rahul Singh, Shubham Agrahari, Surya Deo Yadav, Abhishek Kumar
Summary: Constrained groove pressing (CGP) was used to deform 316 austenitic stainless steel in this study. X-ray diffraction and electron backscattered diffraction were employed to characterize the processed samples, confirming the transformation of the austenitic phase into the martensitic phase. The increase in strength, decrease in ductility, and changes in crystallite size, microstrain, and dislocation density after CGP were observed in the analysis.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
S. S. Hosseini Faregh, R. Raiszadeh, M. R. Dashtbayazi
Summary: This study compares the microstructures and properties of 99.9% pure copper sheets processed through constrained die pressing methods: groove, studded (CSP), and modified studded (Modified-CSP). The results show that all methods led to a decrease in grain size and an improvement in ultimate tensile strength (UTS) of the copper sheets. CSP method showed the most significant improvement in UTS. All techniques successfully reduced residual stress, with CSP using 45 degrees studs being the most effective. However, the increased strain observed in Modified-CSP did not result in maximum UTS due to grain reduction limitations.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Article
Nanoscience & Nanotechnology
Akhil Bhardwaj, Naishadh Gohil, Amit Kumar Gupta, S. S. Satheesh Kumar
Summary: This paper investigates the novel application of constrained groove pressing (CGP) on Ti6Al4V alloy at elevated temperatures, revealing that CGP can enhance its mechanical properties and affect the microstructure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
Poojitha Vindala, T. Raghu, V Pandurangadu
Summary: The present investigation explores the microstructure and mechanical behavior of high-purity aluminium sheets processed by combined constrained groove pressing and cold rolling. The results show that this processing method can refine the grain size and significantly improve the ultimate tensile strength of the material.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Article
Materials Science, Multidisciplinary
Kolla Lakshman Rao, Amit Kumar Gupta
Summary: An experimental investigation on Nimonic 263 alloy using constrained groove pressing (CGP) at various temperatures was carried out to improve its mechanical and microstructural properties. The CGPed specimens exhibited substantial improvements in yield strength, ultimate tensile strength, and micro hardness compared to the as-received material. XRD results showed an increase in peak intensity, a decrease in crystal size, and an improvement in dislocation density after the CGP process. Fractography studies revealed a mixed-mode failure for the CGPed specimens. Finite element analysis confirmed the effectiveness of the CGP process in improving the alloy's properties.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Eun-Ae Choi, Yun Soo Lee, Sang Jin Lee, Jee Hyuk Ahn, Sung Hwan Lim, Satoshi Semboshi, Seung Zeon Han
Summary: Plastic deformation in metals occurs through the generation and movement of dislocations, which increase strength. This study observed the effect of dislocation configuration and reaction with grain boundaries on strength and discovered a hidden mechanism in work hardening.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Prabhat Chand Yadav, Gaurav Gupta, Rajat Gupta, Ambreen Nisar
Summary: The wear behavior of CGP aluminum sheets was examined and it was found that the coefficient of friction decreased significantly and wear resistance improved after each pass of CGP. The wear rate was lower in the transverse direction compared to the longitudinal direction. The formation of a dense tribolayer in the transverse direction contributed to the lower wear rate.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
M. H. Tavajjohi, M. Honarpisheh
Summary: The research investigates the residual stresses distribution resulting from Constrained Groove Pressing in pure copper sheets experimentally and numerically. The results show that the residual stresses are relatively uniform along the length and width of the samples. The numerical simulation using ABAQUS finite element software with Johnson-Cook model demonstrates good agreement with the experimental results.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2022)
Article
Engineering, Biomedical
Manas Ranjan Sahu, T. S. Sampath Kumar, Uday Chakkingal, Vimal Kumar Dewangan, Mukesh Doble
Summary: In this study, the mechanical properties and degradation rate of biodegradable metals Mg and its alloy were improved using groove pressing technique. The groove-pressed samples showed increased hardness, strength, and elongation compared to the annealed condition. The degradation rate of the groove-pressed samples decreased, leading to enhanced biomineralization and cell adhesion.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
(2023)
Article
Engineering, Manufacturing
Subodh Kumar, Ajitanshu Vedrtnam
Summary: The study examines the effects of constraint groove pressing on aluminium and copper, showing that reduction in grain size leads to improvements in tensile strength and hardness. An empirical model correlating residual stresses and grain size is established, and the influence of residual stress nature on mechanical properties is investigated. Additionally, a finite element model is developed to predict stresses, deformation, and residual stresses after each pass, demonstrating a decrease with grain size reduction in up to two passes.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Review
Materials Science, Multidisciplinary
Sunil Kumar
Summary: This review examines the latest progress in the constrained groove pressing (CGP) process and compares it with conventional processes to improve grain refinement and mechanical properties. Various advanced techniques, such as die design modification, annealing, cross CGP, and ring CGP, are highlighted. While significant progress has been made, the future prospects and successful usage of CGP-processed samples in real applications are also discussed.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Zongshen Wang, Tao Wang, Yanjin Guan, Lihua Zhu
Summary: Constrained groove pressing (CGP) is a novel method for fabricating ultra-fine grained (UFG) sheet metals. Results show that CGP is capable of producing bimodal microstructures in deformed materials, with different routes affecting microstructure, texture, and mechanical properties of the alloy sheets.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Peng-Cheng Zhao, Guang-Jian Yuan, Run-Zi Wang, Bo Guan, Yun-Fei Jia, Xian-Cheng Zhang, Shan-Tung Tu
Summary: The microstructural evolution and mechanical properties of ultrafine-grained CP-Ti were systematically examined after large-volume equal channel angular pressing (L-ECAP) and multi-directional forging (MDF). The grain size distribution conformed to lognormal distribution, with iron impurities promoting recrystallization during L-ECAP. The strain hardening rate of CP-Ti increased with decreasing grain size, while the continuous strain hardening ability decreased.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
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)