Article
Nanoscience & Nanotechnology
Jing Wang, Yongqing Zhao, Wei Zhou, Qinyang Zhao, Chao Lei, Weidong Zeng
Summary: The study found that the metastable beta titanium alloy exhibits various deformation modes during tensile process, including dislocation slip, phase interface shear, and grain boundary shear. Due to localized stress concentration and inhomogeneous deformation, microvoids are prone to form at positions such as grain boundaries, phase interfaces, tips of beta interlayers, etc. Additionally, crack propagation follows a zigzag path resulting in an intergranular and transgranular mixed fracture mode.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Haisheng Chen, Xianghong Liu, Yuxuan Du, Fang Hao, Jing Yang, Shaoqiang Li, Kaixuan Wang, Lei Lei
Summary: The deformation mechanism, crack initiation, propagation, and fracture behavior of a new near-alpha titanium alloy Ti80 (Ti-6Al-3Nb-2Zr-1Mo) are studied through in situ tensile testing in SEM. It is found that alpha(p) grains undergo plastic deformation (single slip) initially, and cracks tend to initiate at the alpha(p)/beta(trans) interface and slip bands region. However, slip transfer and multi-slip/cross-slip in alpha(p) delay crack initiation. During crack propagation, the crack tends to follow the path along the alpha(p)/beta(trans) interface or slip bands inside alpha(p), with the alpha(p) boundaries deflecting the crack propagation direction.
Article
Materials Science, Multidisciplinary
Senzhen Wang, Shun Xu, Chongchen Xiang, Zijian Wang, Hanlin Ding
Summary: This study investigates the mechanisms of <111> dislocation transmission at low angle grain boundaries and high angle grain boundaries in Ti-5553 alloy. It is found that low angle grain boundaries have higher geometric alignment and lower residual Burgers vector magnitude, making them more conducive for dislocation transfer.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Yanxi Li, Pengfei Gao, Jingyue Yu, Shuo Jin, Shuqun Chen, Mei Zhan
Summary: In this study, the mesoscale deformation mechanisms of titanium alloy with tri-modal microstructure were investigated using quasi-in-situ tensile tests, SEM, EBSD, and quantitative slip trace analyses. Different slip behaviors and grain boundary sliding were observed in equiaxed alpha (alpha p) and lamellar alpha (alpha l) grains. The study found that crystallographic orientation and geometrical orientation play crucial roles in grain boundary sliding.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Liangwei Yin, Osamu Umezawa
Summary: The study elucidates the grain-scale dwell fatigue behavior in Ti-Fe-O alloy, focusing on the stress redistribution phenomenon within the soft-hard grain combination. Elastoplastic properties of the beta phase were determined using nanoindentation and crystal plasticity modeling, evaluating the role of intergranular beta lath on stress redistribution. The results show that stress redistribution from the soft to hard grain is inhibited in the presence of intergranular beta lath, leading to enhanced peak stress in the beta lath and potential competition between two dwell fatigue failure modes at high stress state.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Nanoscience & Nanotechnology
Ke Hua, Yongliang Zhang, Yanlin Tong, Fan Zhang, Hongchao Kou, Xiaolin Li, Haifeng Wang, Jinshan Li
Summary: An optimized thermomechanical processing method was used to treat β titanium alloy, resulting in a fine equiaxed microstructure with a mean size of 160 nm and significantly enhanced yield strength.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Jing Wang, Yongqing Zhao, Wei Zhou, Qinyang Zhao, Shixing Huang, Weidong Zeng
Summary: The study found that a new metastable beta titanium alloy undergoes stress-induced martensite and mechanical twins during tensile deformation, leading to further work hardening. The crystallographic orientation influences the deformation and fracture behaviors, causing stress concentration and inhomogeneous deformation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Jia-fei Deng, Jing Tian, Yancai Zhou, Yuanying Chang, Wei Liang, Jinyao Ma
Summary: In this study, a rolled rare earth magnesium alloy thin sheet was successfully prepared, and the plastic deformation mechanism and hardening mechanism were explored. The shape of the precipitates and the competition between local strain and macroscopic strain were found to affect the plastic deformation behavior of the alloy.
MATERIALS & DESIGN
(2022)
Article
Nanoscience & Nanotechnology
Sang Won Lee, Jae Hyeok Kim, Chan Hee Park, Jae-Keun Hong, Jong-Taek Yeom
Summary: A new alloy design of metastable alpha+beta-Ti alloy with a mix of high yield strength alpha phase and low elastic modulus metastable beta phase has been proposed in this study, achieving an excellent combination of strength and ductility with a high elastic admissible strain. Heat treatment in the alpha+beta regime is an effective method for grain refinement, resulting in high strength without increasing the elastic modulus.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Mechanical
B. Fernandez Silva, J. Kawalko, K. Muszka, M. Jackson, K. Fox, B. P. Wynne
Summary: This paper investigates the formation and deformation mechanisms of quasi-cleavage facets in dwell fatigue in a bimodal titanium alloy. It identifies basal slip as the critical damage mode leading to dwell fatigue failure and presents a possible criterion for slip transfer.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Materials Science, Multidisciplinary
Hiroshi Akamine, Masatoshi Mitsuhara, Minoru Nishida, Vahid Samaee, Dominique Schryvers, Genki Tsukamoto, Tomonori Kunieda, Hideki Fujii
Summary: The time evolution of precipitates related to age-hardening in Ti-2.3 wt pct Cu alloys was investigated using electron microscopy. It was found that the hardness drastically drops during two-step aging, which can be attributed to a synergistic effect of decreased precipitation strengthening and solid solution strengthening.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Christopher S. Daniel, Alistair Garner, Peter D. Honniball, Luke Bradley, Michael Preuss, Philip B. Prangnell, Joao Quinta da Fonseca
Summary: The texture evolution in dual-phase Zr and Ti alloys plays a crucial role in determining their in-service properties and performance. Studies have shown that during hot-working, there is a coupled strengthening effect between the alpha and beta phases, influencing the alloy's characteristics. Incorporating non-plasticity effects into models of texture evolution is important for processing these alloys effectively.
Article
Nanoscience & Nanotechnology
S. A. Mantri, S. Dasari, A. Sharma, Y. Zheng, H. L. Fraser, R. Banerjee
Summary: The formation and influence of isothermal phase precipitates in a metastable beta-titanium alloy, Ti-10V-2Fe-3Al, is investigated. It is found that the rejection of Al from the growing isothermal precipitates aids in their formation. The presence of alpha/omega and alpha/beta interfaces confirms that the alpha precipitates form at the beta/omega interface. Subsequent annealing at a higher temperature dissolves the precipitates and re-establishes the two-phase beta+alpha equilibrium.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Wenguang Zhu, Tingchuan Shu, Linlin Cui, Guodong Song, Xiangkang Zeng, Conghui Zhang
Summary: In this paper, research on the weak work hardening and microstructure evolution of metastable beta titanium alloy Ti-5Al-4Zr-7Mo-8V was conducted. The results showed limited work hardening and slow propagation of dislocation density, which was attributed to planer slip behavior reducing dislocation interaction.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Chemistry, Physical
Shichao Yang, Chunxiang Cui, Sen Cui, Shuangjin Liu
Summary: This study reports a new type TiAl alloy refined and reinforced by in-situ TiC nanoparticles and TiB2 whiskers. The addition of inoculant significantly increased both room temperature and high temperature ultimate compressive strength of the TiAl alloy. Furthermore, transmission electron microscope (TEM) observation and simulation using Materials Studio software confirmed the good orientation relationships between the reinforcements and the matrix, indicating a strong combination between them.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Quan Zhou, Tae-Kyu Lee, Thomas R. Bieler
Summary: In this study, non-destructive high energy-X-ray diffraction measurements were conducted on Sn-1Ag-0.5Cu and Sn-3Ag-0.5Cu solder joints to investigate the grain evolution during thermal cycling. It was observed that SAC305 joints mostly exhibited 'beachball' microstructures, while SAC105 joints were mostly single crystals. Following solidification, new orientations emerged during cooling in some joints, leading to shifts in dominant orientations during the first 100 thermal cycles. After 750 thermal cycles, all joints had fully cracked, with differences between electron backscatter diffraction mapping and x-ray measurements suggesting a small fraction of the entire joint was represented in the 2-D section. Initial cooling rate did not show a significant effect on microstructure or fracture.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Genzhi Hu, Quan Zhou, Aishwarya Bhatlawande, Jiyun Park, Robert Termuhlen, Yuxi Ma, Thomas R. Bieler, Hui-Chia Yu, Yue Qi, Timothy Hogan, Jason D. Nicholas
Summary: The novel PIDWAS technique utilizes the low wetting angle of silver on nickel and the high work of adhesion between nickel and various ceramics to produce well-adhered, self-assembled silver patterns on normally non-wetting ceramics. The resulting Ag-Ni patterns have higher ceramic adhesion strengths, higher densities, and similar electronic resistivities. This method does not require externally-applied pressure and is suitable for various applications.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
Leyun Wang, Ziliang Lu, Hancheng Li, Zhijie Zheng, Gaoming Zhu, Jun-Sang Park, Xiaoqin Zeng, Thomas R. Bieler
Summary: High energy X-ray diffraction microscopy (HEDM) was used to index nearly 1000 grains in a poly-crystalline Ti specimen and characterize their deformation during an incremental tensile test. The positions of diffraction peaks were analyzed for evolving crystal orientation and stress tensor of each grain. The study evaluated the Taylor hardening model for each grain, showing a correlation between yield stress, hardening, and grain properties.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Yang Su, Songyang Han, Philip Eisenlohr, Martin A. Crimp
Summary: A new model has been proposed to predict the specific deformation system activity at grain boundaries, with promising results in testing. The optimized parameters indicate that both local and global stresses play a role in determining the accommodating systems and their activity. The model's predictions align well with literature values for alpha-titanium.
Article
Engineering, Multidisciplinary
Xueliang Wang, Yang Su, Songyang Han, Martin A. Crimp, Yaping Wang, Yu Wang
Summary: The study found that the elastic recovery behavior induced by MLG significantly increased the hardness in the Cu/MLG interface region, and also revealed the gradient strengthening effect, which can be used to precisely enhance the mechanical performance of copper matrix composite materials by adjusting the interfacial microstructure and properties.
COMPOSITES PART B-ENGINEERING
(2021)
Review
Materials Science, Multidisciplinary
David Hernandez-Escobar, Megumi Kawasaki, Carl J. Boehlert
Summary: This article describes the current state-of-the-art of metal hybrids processed by high-pressure torsion (HPT), highlighting their potential and limitations, and provides suggestions for advancing future research towards applications in high-impact technologies, including the biomedical and microelectronic industries.
INTERNATIONAL MATERIALS REVIEWS
(2022)
Article
Engineering, Mechanical
V. Khademi, T. R. Bieler, C. J. Boehlert
Summary: The correlation between plastic strain and crystallographic misorientation, grain size, grain orientation, distance from grain boundary, and loading history was investigated for BCC polycrystalline microstructures. Small grains exhibited a lower level of misorientation dispersion compared with larger grains, and this discrepancy became more pronounced at higher strains. An empirical equation was proposed to estimate the level of misorientation dispersion for individual grains.
INTERNATIONAL JOURNAL OF PLASTICITY
(2021)
Article
Materials Science, Multidisciplinary
Ryan M. Khawarizmi, Jiawei Lu, Dinh S. Nguyen, Thomas R. Bieler, Patrick Kwon
Summary: Experiments and analysis shows that uncoated carbide inserts have shorter tool life on solution-treated and aged microstructures at different cutting speeds. Finite element analysis helps identify material model parameters and estimate temperature and strain behavior inside the chip. Electron backscattered diffraction maps reveal variations in geometry due to local crystal orientations.
Article
Physics, Applied
Mingmin Wang, Anatolii Polyanskii, Shreyas Balachandran, Santosh Chetri, Martin A. Crimp, Peter J. Lee, Thomas R. Bieler
Summary: This study investigates the effects of grain boundaries, hydrogen, and dislocations on the superconducting properties of Nb bi-crystals. It is found that both GB character and hydrogen content affect magnetic flux penetration, while dislocation structures and low angle GBs facilitate flux penetration.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
JoAnn Bailor, Tong Li, Frederic Prima, Carl J. Boehlert, Arun Devaraj
Summary: The omega phase in titanium and its alloys has been a subject of research interest since its discovery in 1954. The debate on the transformation mechanisms, particularly the beta-to-omega and omega-to-alpha phase transformations in beta-titanium alloy design, continues. Advanced characterization methods have led to improved spatial resolution and compositional sensitivity in phase transformation analysis.
INTERNATIONAL MATERIALS REVIEWS
(2023)
Article
Nanoscience & Nanotechnology
Jianwen Le, C. J. Boehlert, Guangfa Huang, Jianwei Mao, Liming Lei, Yuanfei Han, Weijie Lu
Summary: This study confirms the role of TiB whiskers in the selection of alpha variants and investigates the dependence of the variant-selection degree on the cooling rate.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Geeta Kumari, Thang Q. Pham, Hawke Suen, Tanzilur Rahman, Patrick Kwon, Shanelle N. Foster, Carl J. Boehlert
Summary: This study investigates the microstructure and magnetic properties of Fe-Si-B alloys with different Si and B contents. It is found that the Fe-5wt.%Si alloy with 0.25% B sintered at 1200 degrees C exhibits the highest magnetic relative permeability (4447) and the lowest intrinsic coercivity (47.8 A/m).
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Jiawei Lu, Ryan Khawarizmi, Miguel Monclus, Jon Molina-Aldareguia, Patrick Kwon, Thomas R. Bieler
Summary: The hardness and orientations of the primary αp and transformed βt grains in segmented chips obtained by turning Ti-6Al-4V bar were analyzed. The hardness of αp grains highly depends on the crystal orientation, varying from 4.5 GPa to 6.7 GPa. In the machined chips, αp grains showed similar hardness values while βt grains became slightly harder. The width of shear bands in the chips varied and smaller shear strain was correlated with larger shear cracks.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Electrical & Electronic
Z. L. Thune, C. McKinney, N. G. Fleming, T. R. Bieler
Summary: Investigating the effects of strain path, heating rates, and annealing temperatures on recrystallization behavior can help improve the consistent production and performance of high-purity niobium superconducting radiofrequency cavities.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(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)