Article
Materials Science, Multidisciplinary
Matruprasad Rout, Surjya K. Pal, Shiv Brat Singh
Summary: In this study, the microstructure evolution of austenitic stainless steel after deformation at elevated temperatures was investigated through thermo-mechanical processing. The results showed that at temperatures of 900 degrees C and 1000 degrees C, the microstructures of samples held for 2 seconds consisted of deformed grains, while the sample held at 1100 degrees C showed nearly complete recrystallization. The increase in holding time resulted in a decrease in low angle boundaries and an increase in high angle grain boundaries at all three temperatures.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Emil Eriksson, Fabian Hanning, Joel Andersson, Magnus Hornqvist Colliander
Summary: Understanding the microstructural behaviour of materials during thermomechanical processing is crucial for achieving optimal mechanical properties. We investigated the dynamic recrystallization (DRX) behaviour of Ni-base superalloy Haynes 282 during hot compression and observed the formation of small DRX grains before the peak strain. The DRX process accelerated significantly above a certain strain, and the material was fully recrystallized at a higher strain. Contrary to common assumptions, many DRX grains contained dislocation substructures, even at small strains.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
F. Khodabakhshi, N. Hasani, M. R. Kalaie, A. Hadadzadeh, M. A. Wells, M. Mohammadi
Summary: The high-temperature deformation behavior of additively manufactured 316L stainless steels prepared via laser powder bed fusion (LPBF) technology was investigated using Gleeble compression testing. The material showed excellent thermal stability up to 873 K, with a compressive strength higher than 600 MPa. Different deformation substructures and crystallographic textures were observed at different testing temperatures, indicating the operation of different dynamic restoration mechanisms.
MATERIALS CHARACTERIZATION
(2023)
Article
Engineering, Manufacturing
Matruprasad Rout, Shiv Brat Singh, Surjya K. Pal
Summary: The study focused on the texture evolution of 304LN austenitic stainless steel after the hot-deformation process, with specific interest in different temperature and holding time effects on fiber structures. At higher temperatures and longer holding times, the texture became random. Goss component was identified as a major texture component with significant ND and RD rotated cube components.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2021)
Article
Materials Science, Multidisciplinary
Shiguang Xu, Jinshan He, Runze Zhang, Fucheng Zhang, Xitao Wang
Summary: The hot deformation behaviors and dynamic softening mechanisms of 7Mo super-austenitic stainless steel were studied. The optimal hot deformation conditions were found to be in the temperature and strain rate ranges of 1030-1200 degrees Celsius and 0.001-0.07 s-1, and 1050-1200 degrees Celsius and 10 s-1, respectively. The high stacking fault energy resulted in planar gliding of dislocations as the main deformation mechanism. Dynamic recovery and continuous dynamic recrystallization played dominant roles in the dynamic softening mechanism. Microbands and sigma precipitates further promoted continuous dynamic recrystallization.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Z. Sangari Motlagh, B. Tolaminejad, A. Momeni
Summary: The study evaluated the capabilities of four constitutive equations and a newly developed phenomenological model in describing the hot flow behavior of 1.4542 stainless steel. The original ZA model was found to be effective for large strains, with subsequent modifications improving predictions for low strain levels. The Arrhenius-type constitutive equations showed good agreement with experimental results at low strain rates, but some deviations were observed at high strain rates.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Zhenqiang Deng, Jianhua Liu, Jian Shao, Alexander McLean
Summary: In this study, the dynamic recrystallization (DRX) behavior of as-cast Fe-20Cr-5.5Al-0.64La stainless steel was investigated through a series of compression tests. The true stress-true strain curves were analyzed and the apparent activation energy was estimated. The critical strain, peak strain, and strain for the maximum softening rate were identified and expressed as a function of the Zener-Hollomon parameter. A kinetic model of DRX was established based on the stress-strain data.
Article
Materials Science, Multidisciplinary
Yingjie Huang, Guang Zeng, Lixin Huang, Zebang Zheng, Chuming Liu, Hongyi Zhan
Summary: This study investigates the strain rate dependence of deformation and dynamic recrystallization behaviors of basal-textured AZ80 magnesium alloy. It is found that the dominant dynamic recrystallization mechanisms vary with the strain rate. In addition, intergranular micro-cracks are more likely to initiate under high-strain-rate conditions.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Yahui Han, Changsheng Li, Jinyi Ren, Chunlin Qiu, Shuaishuai Chen, En Li
Summary: The study investigated the dynamic recrystallization behavior of as-cast 4Cr5MoSiV1 steel through hot compression tests conducted at different temperatures and strain rates. It was found that the nucleation of DRX was mainly performed by bulging and sub-grain swallowing, and the presence of dendrite segregation had a significant impact on DRX.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Zhaoning Xu, Liujie Xu, Ning Xiong, Yuan Yao, Xiuqing Li, Shizhong Wei
Summary: In this study, the high-temperature deformation process of molybdenum alloy reinforced by 2.0%ZrO2 was investigated, and the microstructure evolution was analyzed. The relationship between deformation temperature, strain rate, and flow stresses was established. The research found that the alloy mainly undergoes dynamic recrystallization at high temperatures and low strain rates, with partial dynamic recrystallization occurring at high strain rates and low temperatures. Additionally, the alloy has low activation energy, making it suitable for hot working, and exhibits two typical textures after high temperature deformation.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Bidyapati Mishra, Vajinder Singh, Rajdeep Sarkar, A. Mukhopadhyay, K. Gopinath, V Madhu, M. J. N. Prasad
Summary: In this study, two different austenitic low-density steels were produced and their hot deformation behavior was studied. The results showed that the low-density steels exhibited similar stress exponent values, but the presence of B2 phase increased the activation energy of deformation. The effect of B2 phase on flow behavior and microstructure evolution was more pronounced at low test temperatures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Deli Zhao, Liguo Ren, Yong Wang, Wei Wang, Zhe Zhu, Wantang Fu
Summary: This study investigated the mechanical behavior and microstructure evolution of as-cast nuclear grade 321 stainless steel in a certain temperature and strain rate range. The results showed that the suggested hot working window was 1000-1200 degrees C and 0.01-0.1 s(-1), with necklace DRX being the main form of instability.
Review
Materials Science, Multidisciplinary
Hamed Aghajani Derazkola, Eduardo Garcia, Alberto Murillo-Marrod, Aintzane Conde Fernandez
Summary: This review paper presents the latest developments in the numerical analysis, microstructural simulation, and artificial intelligence methods for the hot deformation process of martensitic stainless steels (MSS). Modeling and simulation analysis can reduce the number of experiments and provide insights into the effects of strain and strain rate variations in manufacturing processes.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Lin Wang, Chen Chen, Zhuyu Wang, Zhuoyuan Li, Bo Lv, Fucheng Zhang
Summary: Super austenitic stainless steel (SASS) exhibits different dynamic recrystallization (DRX) mechanisms under different temperature and strain rate conditions. At lower temperatures or strain rates, partial formation of DRX grains occurs through the development of low-angle to high-angle grain boundaries; while at higher temperatures or strain rates, the main DRX mechanism is the formation of DRX grains through sub-grain rotation.
MATERIALS SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Lin Wang, Zhuyu Wang, Xin Jia, Chen Chen, Fucheng Zhang, Wei Zhang
Summary: The high-temperature tensile deformation characteristics of a super austenitic stainless steel were systematically investigated at different deformation temperatures and strain rates. The effect of angle between solidification direction and loading direction on hot ductility was studied in detail. The results showed that the hot ductility of the steel was significantly influenced by the angle between solidification direction and loading direction. The microstructure and deformation behavior of the steel were found to be different for samples with different angles.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Metallurgy & Metallurgical Engineering
Ehsan Bahrami Motlagh, Peter A. Lynch, Thomas Dorin, Pavel Cizek, Alireza Ghaderi, Matthew R. Barnett, Sitarama R. Kada
Summary: In the Mg-7Sn-3Zn-0.04Na alloy, the critical shear stress for achieving 5% twinning is increased by the presence of 7% of Sn and by the presence of particles formed after 10 hours of aging. The evolution of twin volume fraction with plastic strain is similar in both non-aged and aged conditions, indicating precipitation hardening is particularly sensitive to relaxation effects.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Chemistry, Multidisciplinary
Alexey Falin, Matthew Holwill, Haifeng Lv, Wei Gan, Jun Cheng, Rui Zhang, Dong Qian, Matthew R. Barnett, Elton J. G. Santos, Konstantin S. Novoselov, Tao Tao, Xiaojun Wu, Lu Hua Li
Summary: The study investigates the mechanical properties of 2D tungsten disulfide, tungsten diselenide, and tungsten ditelluride, revealing that high-quality 1L WS2 has the highest Young's modulus and strength, with WS2 showing the most significant decrease in elasticity and strength with increased thickness among the three materials. The findings provide insights into the behavior of these materials under different conditions and aging effects, which can be beneficial for the design and application of 2D tungsten dichalcogenides in various fields.
Article
Materials Science, Multidisciplinary
Jun Wang, Mahmoud Reza Ghandehari Ferdowsi, Sitarama R. Kada, Peter A. Lynch, Zhiyang Wang, Justin A. Kimpton, Matthew R. Barnett
Summary: The study investigates the impact of aging on cyclic loading-unloading responses of extruded Mg-Zn alloys, revealing that aging has complex effects on twinning and slip behavior. Aged samples promote twinning over slip during loading and experience additional 'forward' twinning upon unloading. Furthermore, aging leads to noticeable ratchetting strain compared to non-aged samples.
Article
Chemistry, Multidisciplinary
Fernando Cantos-Prieto, Alexey Falin, Martin Alliati, Dong Qian, Rui Zhang, Tao Tao, Matthew R. Barnett, Elton J. G. Santos, Lu Hua Li, Efren Navarro-Moratalla
Summary: This study presents the room temperature layer-dependent mechanical properties of atomically thin CrCl3 and CrI3, revealing their outstanding plasticity with Young's moduli, highest sustained strains, and breaking strengths for bilayers. These materials are expected to contribute to the applications of 2D magnets in magnetostrictive and flexible devices.
Article
Metallurgy & Metallurgical Engineering
Jun Cheng, Tingting Guo, Matthew R. Barnett
Summary: This paper examines the temperature sensitivity of tensile twinning in a magnesium single crystal during nanoindentation. It is found that the generation of twinning is temperature-dependent, with a decrease in pop-in load as temperature increases. The activation energy obtained from thermal activation analysis is consistent with the observations.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Physical
J. Joseph, M. Senadeera, Q. Chao, K. F. Shamlaye, S. Rana, S. Gupta, S. Venkatesh, P. Hodgson, M. Barnett, D. Fabijanic
Summary: By integrating calculated-phase diagrams and a computational framework, a multi-dimensional alloy space with a specific ordered phase for high-temperature structural applications was obtained. The solubility limits of alloying elements at 800 degrees C were defined based on the model, and high-performance high entropy superalloys were developed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
J. Joseph, M. Annasamy, S. R. Kada, P. D. Hodgson, M. R. Barnett, D. M. Fabijanic
Summary: This study analyzed the effect of the relative contents of Al and Ti on the equilibrium phase formation in a novel high entropy superalloy system. Lower Al/Ti ratio improved the mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Hossein Beladi, Ehsan Farabi, Peter D. Hodgson, Matthew R. Barnett, Gregory S. Rohrer, Daniel Fabijanic
Summary: Solid-state additive friction stir deposition was used for three-dimensional printing of 316L stainless steel. The resulting microstructure was exceptionally fine, with a significantly different misorientation angle distribution from the original material, and a texture showing strong shear components.
PHILOSOPHICAL MAGAZINE
(2022)
Article
Nanoscience & Nanotechnology
Jun Wang, Mahmoud Reza Ghandehari Ferdowsi, Peter A. Lynch, Sitarama R. Kada, Matthew R. Barnett
Summary: This study investigates the effects of age hardening on different types of twinning in magnesium alloys, specifically in alloy Mg-6.5Zn with bimodal textures. It was found that tensile twinning is stimulated by precipitates while compression twinning is suppressed by them. This difference is attributed to lower twin surface energy and a larger twinning dislocation Burgers vector in compression twins.
SCRIPTA MATERIALIA
(2022)
Article
Mechanics
Alban de Vaucorbeil, Vinh Phu Nguyen, Christopher R. Hutchinson, Matthew R. Barnett
Summary: This paper presents a study on the Total Lagrangian Material Point Method (TLMPM) for simulating scratch tests, showing its stability and accuracy through comparisons with experimental results and existing research.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Nanoscience & Nanotechnology
Jun Wang, Mahmoud Reza Ghandehari Ferdowsi, Sitarama Raju Kada, Steven Babaniaris, Bevis Hutchinson, Peter A. Lynch, Matthew R. Barnett
Summary: The C-texture appears in Mg-6.5Zn alloy with heavy alloying and higher extrusion ratios. It is not solely linked to the presence of second phase particles, and the starting texture is not essential for its formation. The promoted pyramidal < c + a > slip mechanism is likely responsible for its formation.
SCRIPTA MATERIALIA
(2022)
Article
Engineering, Mechanical
Daniel Grasser, Michael Pereira, Matthew Barnett, Santiago Corujeira Gallo
Summary: This study investigates the wear behavior of macro-scale composites consisting of hard inserts in a soft matrix and suggests that the spacing between the inserts, relative to the size of abrasive particles, is crucial in reducing wear and forming protective particle layers.
Article
Materials Science, Multidisciplinary
Yi Yang, Veronique Massardier, Mahmoud Reza Ghandehari Ferdowsi, Lu Jiang, Jun Wang, Thomas Dorin, Sitarama R. Kada, Matthew R. Barnett, Michel Perez
Summary: This study provides new insights into the precipitation kinetics in Mg-Zn alloys. Through the characterization of the evolution of Zn solute, precipitate size, and volume fraction using various techniques, the experimental results are supported by a precipitation model based on classical nucleation and growth theories. The study reveals the prevalence of rod-shaped precipitates in the early aging stage and plate-shaped precipitates in the overaging stage.
Article
Materials Science, Multidisciplinary
Charline Le Nue, Santiago Corujeira Gallo, Alireza Vahid, Jiangting Wang, Mehdi Taherishargh, Hooyar Attar, Daniel Fabijanic, Matthew Barnett
Summary: High-chromium cast irons are commonly used for wear-resistant applications, and there is ongoing debate on the secondary carbide types during heat treatment. This study examines the microstructural evolution of a hypoeutectic high-chromium cast iron and finds that M23C6 secondary carbides precipitate during heating, while higher temperatures result in the formation of both M23C6 and M7C3 secondary carbides. The carbon content of the matrix plays a significant role in determining the martensite start temperature and bulk hardness.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Engineering, Manufacturing
Ehsan Farabi, Steven Babaniaris, Matthew R. Barnett, Daniel M. Fabijanic
Summary: The additive friction stir deposition (AFSD) of Ti6Al4V alloy was performed successfully with improved ductility and strength of the deposited state, achieved by the reduction of deposition temperature and refinement of the as-deposited phase structure.
ADDITIVE MANUFACTURING LETTERS
(2022)
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)
