Article
Engineering, Marine
Weijia Ma, You Qin, Fei Gao, Qi Wu
Summary: This study investigates the effects of several consolidation state parameters on the shear modulus of saturated coral sand through a multi-stage strain-controlled undrained cyclic shear test. The results show that the shear modulus increases with increasing effective mean principal stress and consolidation ratio, but decreases with increasing consolidation direction angle and coefficient of intermediate principal stress. A new index 14G0 is proposed to modify the prediction model of shear modulus. It is also found that there is an identical relationship between normalized shear modulus and normalized shear strain for various consolidation state parameters, which can be described by the Davidenkov model. By using the prediction model proposed in this study, an excellent prediction of shear modulus can be obtained with a deviation within +/- 10%.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Jianqiang Wang, Yu Song, Shuaishuai Dong, Song Ding, Yukun Geng, Xiaotong Gao
Summary: Temperature, zinc contamination concentration, and surrounding pressure have significant effects on the mechanical properties of Guilin red clay. The stress-strain curves of the red clay show strain-hardening behavior, with increase in temperature and zinc contamination concentration resulting in increased shear strength. Furthermore, the deformation modulus tends to increase initially with increasing strain but then decreases.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
C. C. Agoha, A. Opara, O. C. Okeke, C. N. Okereke, C. N. Onwubuariri, F. B. Akiang, L. J. Osaki, I. A. Omenikolo
Summary: The 3D geomechanical characterization of Fuja field reservoirs in the Niger Delta evaluated the mechanical properties of the reservoir rocks, showing that sandstone is less elastic and ductile compared to shale. The study generated geomechanical models that identified areas with minimal rock deformation, aiding in risk management during drilling and post-drilling activities. The results will be helpful in mitigating exploration and exploitation challenges for operators.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Soham Teraiya, Shailendra Kumar
Summary: This paper presents an experimental study on the mechanical properties of additively manufactured anti-tetrachiral auxetic structures under shear and flexural loading. The influence of process factors on modulus, strength, and specific energy absorption (SEA) is investigated, and regression models are developed to predict the response characteristics. The study shows that the mechanical properties of the structures improve with increasing slice thickness, print speed, and contour width, and optimized values of process factors are determined to maximize the mechanical properties.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Engineering, Geological
Mustapha Abdellaziz, Mourad Karray, Jeudy Betegard, Pascal Locat, Catherine Ledoux, Remi Mompin, Mohamed Chekired
Summary: This study examines the strain rate effect on the behavior of eastern Canada soils through experimental results and literature data analysis. The findings indicate that the undrained shear strength increases proportionally with the strain rate, with approximately 6% -17% increase per log cycle of strain rate. The results also show that the shear modulus increases with the strain rate, especially at large strain amplitudes. Furthermore, the extent of the strain rate effect is found to be correlated with the shear strain amplitude and plasticity index.
CANADIAN GEOTECHNICAL JOURNAL
(2022)
Article
Engineering, Manufacturing
Junquan Yu, Wenbin Zhou, Guoqun Zhao
Summary: The study investigates the effects of true strain, strain rate, and temperature on the interfacial bonding strength of Al/Mg alloy hybrid structures/components formed through plastic deformation. It was found that adjusting these parameters can optimize the interfacial bonding strength under specific conditions.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Chemistry, Multidisciplinary
Hong Hu, Xuyun Guo, Yaokang Zhang, Zijian Chen, Lei Wang, Yuan Gao, Ziran Wang, Yuqi Zhang, Wenshuo Wang, Mingming Rong, Guoqiang Liu, Qiyao Huang, Ye Zhu, Zijian Zheng
Summary: A strategy called elasto-plastic design of an ultrathin interlayer is proposed to enhance the strain tolerance of flexible electronics. By inserting an ultrathin, stiff, and elastic interlayer between a rigid film/device and a soft substrate, the actual strain applied on the film/device can be significantly reduced when the substrate is bent.
Article
Construction & Building Technology
Helena Lunkes Strieder, Gabriel Grassioli Schreinert, Matheus Ferreira Matuella, William Fedrigo, Lucas Delongui, Douglas Rutzen, Washington Peres Nunez
Summary: This study examines factors influencing the mechanical behavior of construction and demolition waste (CDW) in base and sub-base layers, and finds that CDW composition and construction methods have a significant impact on its performance, which should be considered in pavement design.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Environmental
Seyed Hassan Jafari, Seyed Hamid Lajevardi
Summary: This study investigates the effect of freeze-thaw cycles on the strength and stiffness properties of clay soil stabilized with nanosilica and lime. The results show that adding nanosilica and lime can improve the strength and small strain shear modulus of the clay, but freeze-thaw cycles lead to a reduction in these properties.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2022)
Article
Chemistry, Analytical
Bin Wang, Kang Liu, Yong Wang, Quan Jiang
Summary: Site investigations of the soils are crucial for evaluating site conditions and designing and constructing projects. The Taihu tunnel in China, the longest tunnel constructed in a lake, lacked sufficient data for the lacustrine clay, leading to self-boring pressuremeter (SBPM) field tests. The results showed higher shear strengths than laboratory tests due to soil disturbance during sampling.
Article
Engineering, Geological
Maya El Kortbawi, Diane M. Moug, Katerina Ziotopoulou, Jason T. DeJong, Ross W. Boulanger
Summary: This paper presents a numerical simulation and experimental validation study on the effect of microbial induced calcite precipitation (MICP) treatment on soil improvement. The study proposes a relationship between apparent cohesion and cone tip resistance and analyzes the trends between different parameters.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2022)
Article
Engineering, Geological
Tomas Mohyla, Jan Bohac, David Masin
Summary: Experimental data on small strain stiffness of unsaturated soils is essential for developing and calibrating advanced numerical models. The study found that both net stress and suction lead to increased stiffness in the soil. The experimental data were used to calibrate constitutive parameters and assess the capabilities of an advanced hypoplastic model for unsaturated soils, with good agreement between model predictions and laboratory measurements.
Article
Construction & Building Technology
Ruijia Wu, Jiaxi Mao, Jinyuan Li, Yiyang Qian, Han Feng, Y. Xiao
Summary: Glubam is a type of engineered bamboo that was studied for its torsional shear properties. Testing was done on prismatic specimens with square sections using both conventional strain gauge-based instrumentation and a digital image correlation (DIC) system. The study examined thick- and thin-strip glubams, the influence of carbonization on thick-strip glubam, and compared them to spruce-pine-fir (SPF). The results showed that carbonization slightly increased the strength of thick-strip glubam but made it more brittle, while the presence of bi-directional bamboo fibers in thin-strip glubam contributed to its larger deformability compared to thick-strip glubam.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Sergiu-Mihai Alexa-Stratulat, Petru Mihai, Ana-Maria Toma, George Taranu, Ionut-Ovidiu Toma
Summary: This paper addresses the lack of research on the long-term material properties of concrete, focusing on strength and dynamic elastic properties. Through laboratory tests, the paper presents data on the performance of concrete at different ages, providing insight into the changes in properties over time.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Jinrong Zhang, Dadong Yan, Shuanhu Qi
Summary: By performing coarse-grained molecular dynamics simulations, the effect of crosslinking and chain uncrossability on the microphase behaviors and mechanical properties of double-network gels has been studied. The simulations reveal a close relation between the phase and mechanical properties of the double-network systems and their network topological structures. Depending on the lattice size and the solvent affinity, two different microphases have been observed: aggregation of solvophobic beads around crosslinking points and bunching of polymer strands. The coalescence of network edges is responsible for the large relative increase in the shear modulus.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Bingqiang Wei, Wenqian Wu, Mingyu Gong, Shuwei Yu, Song Ni, Min Song, Jian Wang
Summary: Deformation twinning is crucial in determining the mechanical behavior of hexagonal metals. Lowering the energy of basal stacking faults can promote the formation of basal stacking faults and face centred cubic phase, which affects the propagation and growth of deformation twins. This study provides insights into the influence of lowering basal stacking faults energy on twinning behaviors in hexagonal metals.
Article
Materials Science, Multidisciplinary
Zhonglun Zhang, Ji Gu, Min Song
Summary: The thermodynamic stability of the FeCoCrNiMn high entropy alloy is questioned in recent investigations. In this study, a long-time annealing treatment at 500 degrees C was conducted on a cold-rolled FeCoCrNiMn alloy, and the results show the precipitation of three phases. The precipitation sequence starts with two phases (a Cr-rich phase and a NiMn-rich phase) at annealing time ranging from 240 to 720 h, followed by a third FeCo-rich phase at a longer annealing period of 960 h. The formation of precipitation significantly affects the mechanical properties of the alloy.
Article
Materials Science, Multidisciplinary
Xiongpeng Zhou, Hongge Yan, Jihua Chen, Weijun Xia, Huaming Zhu, Bin Su, Min Song
Summary: The effect of texture on the damping capacity of ZK60 magnesium alloy was investigated through compression experiments. It was found that both the dislocation networks, twins, and the basal texture intensity affect the damping capacity. This research provides a direction for the study of high-strength and high-damping magnesium alloys.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Li Wang, Xiaopeng Liang, Bin Liu, Michael Oehring, Jonathan Paul, Jie Liu, Min Song, Florian Pyczak, Yong Liu
Summary: The interaction between dislocations and perovskite Ti3AlC precipitates in a titanium alloy was investigated. It was found that the Ti3AlC carbides can be sheared by dislocations, leading to the formation of stacking faults and crossed stacking fault configurations. These stacking faults are induced by the shear of Shockley partial dislocations and further extended along specific crystal planes.
SCRIPTA MATERIALIA
(2023)
Article
Engineering, Mechanical
Xu Zhang, Yang Gui, Minjie Lai, Xiaochong Lu, Ji Gu, Feng Wang, Tao Yang, Zhangwei Wang, Min Song
Summary: The microstructures, mechanical properties, and deformation substructures of gradient Mo0.3NiCoCr medium-entropy alloys with very coarse grain size created by pre-torsion have been investigated. The strength of these alloys increases with the increase of torsion angle, while the tensile elongation remains the same, suggesting the enhanced strength-ductility synergy. The combination of experimental characterization and theoretical modeling enables to clarify the underlying strengthening and strain hardening mechanisms, providing guidance for optimizing the mechanical performance of structural materials via tuning the design of gradient structure.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Materials Science, Multidisciplinary
Zonglian Huang, Bo Wang, Fei Liu, Min Song, Song Ni, Shaojun Liu
Summary: The influence of laser energy density and heat treatment on the microstructure and properties of Co-Cr-Mo-W alloys fabricated by selective laser melting (SLM) was investigated. The SLM-ed Co-Cr-Mo-W alloys displayed high strength and good ductility when the laser power, scanning speed, and scanning space were set as 160 W, 400 mm/s, and 0.07 mm, respectively. The heat treated alloys showed finely distributed precipitates ranging from nano-to macro-scale in Co-Cr alloys grains and/or along the grain boundaries. By tailoring the microstructure and morphology of SLM-ed alloys during heat treatment, Co-Cr-Mo-W alloys with an excellent combination of strength and ductility can be achieved. The tensile strength, yield strength, and elongation were 1221.38 +/- 10 MPa, 778.81 +/- 12 MPa, and 17.2 +/- 0.67%, respectively.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Chemistry, Physical
Weijing Liu, Xinglong An, Wenting Jiang, Song Ni, Min Song
Summary: In this study, the effects of strain rate and strain on the microstructure and hardness of polycrystalline cobalt were investigated. It was found that high strain rate promoted the activation of various types of twinning and incomplete dynamic recrystallization during high-speed impact. Quasi-static compression mainly resulted in dislocation slip and the activation of specific twins. The high-speed compressed samples exhibited higher hardness values due to the higher density of twins produced during high-speed compression.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Longjun Li, Li Wang, Zhida Liang, Junyang He, Min Song
Summary: The formation of various types of oxide scales on the surface and along the grain boundaries of a complex CoNi-based superalloy was investigated at 900 degrees C. A complex multilayered oxide scale was formed under steady-state conditions (oxidation time up to 24 hours). After the breakdown of the steady-state oxide scale (oxidation for 48 hours), different types of oxide scales occurred. It was also observed that oxidation gradually extended into the specimen interior along the grain boundaries, caused by selective oxidation of elements due to differences in equilibrium oxygen partial pressures. Local microstructure and oxygen concentration were found to significantly influence the formation and configuration of the oxide scales in the investigated alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Letter
Materials Science, Multidisciplinary
Hao Zhang, Bingqiang Wei, Xiaoqin Ou, Song Ni, Xiaozhou Liao, Min Song
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yang Yang, Xiaoqin Ou, Hao Zhang, Min Song
Summary: Carbon plays a crucial role in enhancing the mechanical properties of steels as a principal alloying element. This study investigates the interstitial sites for carbon atoms during deformation-induced phase transformations in Fe-C alloys through molecular dynamics simulations, providing insights into the microstructural evolution at the atomic scale. The distribution and arrangement of carbon atoms in the Fe lattice affect the formation of stacking faults and the pinning effects on dislocation movement.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Yangbo Yu, Hongge Yan, Huaming Zhu, Jihua Chen, Weijun Xia, Youping Sun, Bin Su, Yifu Deng, Min Song
Summary: This study investigates the DRX behavior, grain structure, and texture evolution of bimodal TC17 alloy during high strain rate hot compression at 840°C and 900°C. The results show that the lamellar alpha s has almost no impact on the DRX of the beta phase due to dynamic transformation. The formation of dense LAGB cells in the beta phase is influenced by the decomposition of alpha p and the strain level.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yangbo Yu, Hongge Yan, Huaming Zhu, Jihua Chen, Weijun Xia, Taoyun Liang, Bin Su, Min Song
Summary: This study investigates the hot deformation behavior and microstructure evolution of TC17 alloy with lamellar and beta treated starting microstructures under stepped strain rate (20 s1 + 0.1 s1, 20 s1 + 1 s1, and 20 s1 + 10 s1) hot compression at 840 degrees C. The results show that the alloy with two microstructures exhibited similar flow curves, but the lamellar sample displayed more flow softening during the second compression stage with a strain rate of 10 s1. Adiabatic shearing bands with coarsened beta grains were formed in the compressed lamellar alloy, and a high dislocation density was observed at grain boundaries. The microstructure evolution after 60% compression was dominated by dynamic recovery, except for the lamellar alloy with a stepped strain rate of 1 s1, which underwent dramatic dynamic recrystallization. The precipitation of dot/lath-like << was achieved in both the 60% compressed alloys, and it was promoted by a higher stepped strain rate.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Jie Yan, Min Song, Dong-Ying Zhou, Guowei Ni, Muhua Gu, Shek-Man Yiu, Xiuwen Zhou, Liang-Sheng Liao, Yun Chi
Summary: Efficient saturated red and near-infrared emissive bis-tridentate Ir(III) complexes have been synthesized for the development of organic light-emitting diodes (OLEDs). The resulting OLED devices demonstrate high external quantum efficiencies and emission peak wavelengths.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Changchang Liu, Ji Gu, Min Song
Summary: This study investigates the hot rolling treatment and water quenching process on a TC18 titanium alloy, revealing the formation of a new phase induced by stress and assisted by another phase. The existence of a new phase and diffuse streaks during hot working were also observed. The research confirms the presence of dynamic recrystallization (DRX), with recrystallization grains nucleating preferentially at high-energy areas such as grain boundaries and shear bands. The elongation decreases and tensile strength increases with increasing deformation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Jian W. Du, Jie Zhang, Li Chen, Zhe R. Liu, Fei Pei, Yi Kong
Summary: In this study, the interface structure, mechanical properties, and thermal stability of TiAlSiN/TiAlN multilayers with different Al and Si contents were systematically investigated. It was found that the increased content of Al and Si within the TiAlSiN sublayer is detrimental to the formation of a coherent interface, resulting in a decrease in hardness and a delay in thermal decomposition.
ACS APPLIED MATERIALS & INTERFACES
(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)
