Article
Materials Science, Multidisciplinary
M. Paghandeh, A. Zarei-Hanzaki, H. R. Abedi, Y. Vahidshad, J. Kawalko, D. Dietrich, T. Lampke
Summary: This study investigated the warm temperature deformation behavior of the Ti-6Al-4V alloy through tension and compression tests. It was found that the material exhibited low compressive formability and premature fracture at lower temperatures, while showing increased work hardening capacity in tensile mode. The higher activity of pyramidal slip systems in tensile mode contributed to substructure development and higher strain accommodation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
R. D. Karelin, I. Yu. Khmelevskaya, V. S. Komarov, V. A. Andreev, M. M. Perkas, V. S. Yusupov, S. D. Prokoshkin
Summary: The study investigated the effect of equal-channel angular pressing (ECAP) on a Ti-Ni shape memory alloy, showing higher strength and functional properties at a channel intersection angle of 110 degrees and a temperature of 450 degrees Celsius. As the deformation temperature increases, structural elements in the Ti-Ni SMA undergo morphological transformation, changing in shape and size.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Nanoscience & Nanotechnology
Peng Chen, Yunfan Liu, Na Min, Meimei Wang, Xiaorong Cai, Mingjiang Jin, Xuejun Jin
Summary: In this study, an excellent two-way shape memory effect (TWSME) with large magnitude and small cyclic degradation of NiTi wires is achieved by combining martensite deformation and nanocrystallization. The wires exhibit a maximum TWSME strain of 7.37% after being pre-deformed to 11% and maintain a stable strain of 6.88% after 20 cycles. The excellent TWSME is attributed to the dislocation structures induced by martensite deformation and the nanocrystalline strengthened matrix.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Taotao Wang, Fangmin Guo, Taotao Ai, Yapeng Li
Summary: In this study, a nano-crystalline (NC) Ni47Ti50Fe3 alloy with an average size of about 15 nm was obtained and showed superior superelastic properties compared to previous NiTi-based shape memory alloys. It exhibited a high superelastic stress (1170 MPa), low reduction rate of superelastic stress (12%), and small residual strain (0.66%) after ten cycles of loading and unloading. The improved performance was attributed to synergistic reinforcement from Fe element doping and high-density grain boundary.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Victor Komarov, Roman Karelin, Vladimir Cherkasov, Vladimir Yusupov, Grzegorz Korpala, Rudolf Kawalla, Ulrich Prahl, Sergey Prokoshkin
Summary: This study investigated the application of severe torsion deformation (STD) to a near-equiatomic NiTi shape memory alloy to achieve super-high strain and improve mechanical and functional properties. STD was performed at 500℃ using the BaHR MDS-830 multidirectional test system, with accumulated true strain values of 4.3 and 9.1 for 14 and 30 turns, respectively. Various characterization techniques were used to analyze the structural phase state and properties. The results showed that STD at 500℃ allowed for high strain accumulation without failure, and a submicrocrystalline structure with an average grain/subgrain size of about 500 nm was formed after 30 turns of STD. This structure led to high maximum completely recoverable strain values of 6.1-6.8%, indicating the promising potential of severe torsion straining deformation in forming ultrafine-grained structures and achieving high properties in titanium nickelide.
Article
Chemistry, Physical
Ekaterina Marchenko, Alexander Monogenov, Anatoly Klopotov, Gulsharat Baigonakova, Ekaterina Chudinova, Alexander Vorozhtsov, Sergei Sokolov
Summary: The phase composition, microstructure, and multiple shape memory effect of TiNi50-xVx alloys were studied. Vanadium doping increases the stability of high-temperature phases and enhances the reversible deformation of the multiple shape memory effect.
Article
Engineering, Mechanical
Ozan Tamer, Fabian Walter, Michael Sinapius, Markus Boel
Summary: Formation of ice on aerodynamic surfaces is a vital safety concern in aviation, and various thermal, mechanical, or hybrid systems are used to prevent or eliminate ice formation. Research is being conducted to develop new methods using new materials for increased energy efficiency. This article investigates the geometrical parameters of a novel thermomechanical deicing concept based on the shape memory effect, and analyzes the thermomechanical behavior of a shape memory alloy wire embedded in an elastomer by considering the nonlinear phase transformation and linear expansion of the alloy.
Article
Metallurgy & Metallurgical Engineering
Victoria M. Miller, Jian-Feng Nie, Tresa M. Pollock
Summary: In this study, the effects of temperature and alloy content on the crystallographic texture and grain size distribution in Mg-Zn alloys were investigated after warm rolling and recrystallization. It was found that the recrystallization texture strength decreased with increasing heat treatment temperature. In addition, both the evolution of texture and the Avrami exponent were not sensitive to the Zn alloying content.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Engineering, Mechanical
Marcos Lopes Leal Junior, Laurent Pino, Mahmoud Barati, Luc Saint-Sulpice, Laurent Daniel, Shabnam Arbab Chirani
Summary: A new constitutive modeling is proposed to simulate the cyclic thermomechanical behavior of SMA-based actuators activated by Joule heating. The model considers the impact of different phenomena highlighted during experimental tests and is validated by comparing simulation results with experimental tests.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Nanoscience & Nanotechnology
Kangjie Chu, Qingping Sun
Summary: The study investigates the impact of one-step overstressed compressive plastic deformation on the functional fatigue and cooling performance of polycrystalline NiTi. The results show that this method can effectively reduce functional fatigue and enhance cooling performance by adjusting microstructure and residual stress in the material.
SCRIPTA MATERIALIA
(2021)
Article
Engineering, Mechanical
R. Kumar, S. Sanyal, J. Bhagyaraj, E. Hari Krishna, S. Mukherjee, K. Prasad, S. Mandal
Summary: This study investigates the thermomechanical fatigue (TMF) behavior of Timetal 834 alloy under different loading conditions. The results show that the alloy exhibits different cyclic hardening and softening responses at different strain amplitudes. The strain amplitude and phase angle have significant effects on the TMF life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Crystallography
Victor Komarov, Roman Karelin, Irina Khmelevskaya, Vladimir Yusupov, Dmitry Gunderov
Summary: This study investigated the effect of post-deformation annealing on a nickel-enriched Ti-Ni shape memory alloy. The results showed that the annealing process led to the precipitation of finely dispersed Ti3Ni4 particles and significantly improved the alloy's recoverable strain and shape recovery rate.
Article
Chemistry, Physical
Hui Zhang, Jinyi Liu, Zhiyuan Ma, Yang Ren, Daqiang Jiang, Lishan Cui, Kaiyuan Yu
Summary: In this study, a nanocrystalline Ti50Ni42Cu6Fe2 shape memory alloy with a narrow stress-hysteresis and wide superelasticity temperature window was fabricated by a series of processes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Composites
Mitchell P. Jones, Gokul G. Murali, Frederic Laurin, Paul Robinson, Alexander Bismarck
Summary: Shape change is crucial for the performance of natural structures, and human engineering is now focusing on improving aerodynamic efficiency through smooth, full form changes in material geometry. This research has the potential to enhance power generation in wind turbines, make aircraft and cars safer and more sustainable.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Bingyao Yan, Yanqiu Zhang, Shuyong Jiang, Junbo Yu, Dong Sun, Ming Tang
Summary: The mechanical properties and fracture mechanisms of martensitic NiTi shape memory alloy were studied through thermomechanical processing, leading to significant changes in microstructure and differences in plasticity and fracture strength of the alloy. The decrease in plasticity in the annealed alloy is mainly attributed to the reduction of reorientation+detwinning zone and plastic zone, as well as the difference in crack-path configuration resulting in a larger proportion of fracture mode I in the annealed alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Manufacturing
V Sheremetyev, S. Dubinskiy, M. A. Iqbal, K. Lukashevich, S. Prokoshkin, V Brailovski
Summary: The dynamic chemical etching technique improved the permeability and mechanical properties of Ti-Nb-Zr scaffolds, leading to an increase in porosity and permeability, along with higher yield compressive stresses compared to the as-sintered scaffolds. The etched scaffolds with varying porosity from 40% to 60% exhibited a promising balance of properties for potential use as bone implants, with an apparent Young's modulus ranging from 8.6 to 1.9 GPa and an ultimate compressive strength from 650 to 190 MPa.
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME
(2021)
Article
Materials Science, Multidisciplinary
Victor Komarov, Irina Khmelevskaya, Roman Karelin, Rudolf Kawalla, Grzegorz Korpala, Ulrich Prahl, Vladimir Yusupov, Sergey Prokoshkin
Summary: The deformation behavior, microstructure, phase composition, and mechanical properties of Ti-50.9 at.%Ni shape memory alloy during uniaxial compression have been analyzed. The deformation temperature of 300 degrees C marked a transition boundary for the type of flow curves, and the alloy exhibited the highest shape recovery characteristics between 300 degrees C and 600 degrees C.
Article
Materials Science, Multidisciplinary
D. Gunderov, S. Prokoshkin, A. Churakova, V Sheremetyev, I Ramazanov
Summary: The effect of HPT and accumulative HPT on the Ti18Zr15Nb biomedical alloy was studied. It was found that the beta-phase X-ray line width significantly increased after processing, with grains refined down to 10-30 nm. The alloy's microhardness noticeably increased, indicating an increase in strength and yield stress while maintaining the fl-state.
Article
Materials Science, Multidisciplinary
Elena P. Ryklina, Kristina A. Polyakova, Sergey D. Prokoshkin
Summary: This study investigated the shape recovery characteristics of titanium nickelide with nickel contents of 50.0% and 50.7%, and found that the nickel content strongly impacts the shape recovery characteristics and grain/subgrain size. The total recovery strain was found to reach a maximum of 13.5-15% in equiatomic alloy and 20% in Ni-rich alloy.
Article
Chemistry, Physical
Sergey Dubinskiy, Sergey Prokoshkin, Vadim Sheremetyev, Anton Konopatsky, Andrey Korotitskiy, Natalia Tabachkova, Elena Blinova, Alexander Glezer, Vladimir Brailovski
Summary: The mechanisms of stress-induced transformation in fine-grained Ti-50.61 at.%Ni shape memory alloy were studied. It was found that a discrete mechanism of stress-induced B2 -> B19' transformation exists in nanograined Ti-Ni alloys, with a critical austenite grain size of about 4.5 nm.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
R. D. Karelin, I. Yu. Khmelevskaya, V. S. Komarov, V. A. Andreev, M. M. Perkas, V. S. Yusupov, S. D. Prokoshkin
Summary: The study investigated the effect of equal-channel angular pressing (ECAP) on a Ti-Ni shape memory alloy, showing higher strength and functional properties at a channel intersection angle of 110 degrees and a temperature of 450 degrees Celsius. As the deformation temperature increases, structural elements in the Ti-Ni SMA undergo morphological transformation, changing in shape and size.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Materials Science, Multidisciplinary
S. Prokoshkin, Y. Pustov, Y. Zhukova, P. Kadirov, S. Dubinskiy, V. Sheremetyev, M. Karavaeva
Summary: Fe-30Mn-5Si biodegradable shape memory alloy subjected to hot rolling TMT at 600 or 800 degrees Celsius achieved optimal mechanical properties and lowered the γ<->ε transformation starting temperature, with minimal impact on corrosion rate, making it a promising treatment for bone implants.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Biophysics
Anton S. Konopatsky, Tatyana O. Teplyakova, Daria Popova, Kseniya Yu Vlasova, Sergey D. Prokoshkin, Dmitry Shtansky
Summary: The study demonstrates that surface modification of advanced superelastic Ti-based alloys with Ag nanoparticles can result in materials with excellent bactericidal properties. This surface treatment led to the formation of a porous surface layer with superior antibacterial activity.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Metallurgy & Metallurgical Engineering
V. A. Sheremet'ev, O. B. Akhmadkulov, V. S. Komarov, A. Korotitskii, K. E. Lukashevich, S. P. Galkin, V. A. Andreev, S. D. Prokoshkin
Summary: The special thermomechanical behavior and structure formation of shape memory alloy Ti-19 at.% Zr-14 at.% Nb for medical applications were studied through upsetting tests at 600-1000 degrees C with strain rates 0.1, 1, and 10 sec(-1). The alloy was found to be highly deformable under the experimental conditions, with low sensitivity to deformation rate. Recommendations for thermomechanical treatment of semiproducts from the Ti-Zr-Nb alloy were developed based on the results of the study.
METAL SCIENCE AND HEAT TREATMENT
(2021)
Article
Mechanics
G. R. Aripov, V. V. Cheverikin, A. Bazlov, H. Mao, D. Louzguine-Luzgin, V. Polkin, S. D. Prokoshkin
Summary: This study focuses on the influence of chemical composition on the microstructure and properties of cast high-entropy alloys, as well as the optimal conditions for homogenization annealing. Structural and phase changes in alloys with different compositions were examined before and after homogenization annealing, with experimental analysis of crystalline phase morphology and microstructural evolution. Strength characteristics of alloys under different homogenization annealing conditions were also determined.
PHYSICAL MESOMECHANICS
(2021)
Article
Materials Science, Multidisciplinary
Danil Barilyuk, Andrey Bazlov, Natalia Arkharova, Tatyana Teplyakova, Anton Konopatsky, Sergey Prokoshkin
Summary: Four novel superelastic alloys, Ti-41Zr-12Nb, Ti-42Zr-11Nb, Ti-43Zr-10Nb, Ti-44Zr-10Nb, were obtained and studied for their microstructure and mechanical properties, showing pronounced superelastic behavior after thermomechanical treatment. Among them, Ti-41Zr-12Nb demonstrated the highest ductility and is considered one of the most promising alloys in the Ti-Zr-Nb system.
Article
Materials Science, Multidisciplinary
S. Dubinskiy, G. Markova, A. Baranova, V. Vvedenskiy, I Minkova, S. Prokoshkin, V Brailovski
Summary: A non-typical Elinvar effect was found in the beta-Ti-Nb-Zr shape memory alloy, showing negligible temperature variations of the beta-phase elastic constants. This effect is believed to be caused by the intrinsic properties of the beta-Ti-Nb-Zr alloy.
Article
Materials Science, Multidisciplinary
M. Tsaturyants, V Sheremetyev, S. Dubinskiy, V Komarov, K. Polyakova, A. Korotitskiy, S. Prokoshkin, E. Borisov, K. Starikov, D. Kaledina, A. Popovich, V Brailovski
Summary: The influence of different combinations of heat treatments and heating-cooling cycling on the shape memory alloy was studied. Thermal cycling causes transformation-induced hardening and changes the transformation sequence. Moreover, thermal cycling improves the mechanical and functional properties of the alloy.
SHAPE MEMORY AND SUPERELASTICITY
(2022)
Article
Materials Science, Multidisciplinary
K. E. Lukashevich, V. A. Sheremetyev, A. A. Kudryashova, M. A. Derkach, V. A. Andreev, S. P. Galkin, S. D. Prokoshkin, V Brailovski
Summary: Ti-Zr-Nb shape memory alloys with low Young's modulus, superelastic behavior, superior corrosion resistance, and non-toxicity are suitable for bone implants. In this study, a superelastic Ti-19Zr-14Nb alloy was processed by radial shear rolling and rotary forging to form long-length bar stocks. The grain structure, phase composition, mechanical, and functional properties of the bar stocks were analyzed. It was found that the best combination of structural, mechanical, and functional characteristics was achieved after rotary forging at 700 degrees C.
LETTERS ON MATERIALS
(2022)
Article
Engineering, Biomedical
Anton Konopatsky, Tatyana Teplyakova, Vadim Sheremetyev, Tamara Yakimova, Olga Boychenko, Marina Kozik, Dmitry Shtansky, Sergey Prokoshkin
Summary: Superelastic biocompatible alloys are attracting attention as new materials for bone tissue replacement. This study investigates the application of atomic layer deposition (ALD) technique for surface modification of Ti-18Zr-15Nb alloy with TiO2 oxide. The results show that a 10-15 nm thick, low-crystalline TiO2 oxide layer is formed over the natural oxide film of the Ti-18Zr-15Nb alloy. The surface is exclusively composed of TiO2 and has been modified with Ag nanoparticles to enhance antibacterial activity.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(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)