Article
Materials Science, Multidisciplinary
Anne Joulain, Valerie Audurier, Pascal Gadaud, Joel Bonneville, Clio Azina, Yongfeng Lu, Jean-Francois Silvain
Summary: The addition of titanium to copper-carbon fiber composites enhances the interfacial bonding strength, preventing fiber pull-out during deformation. However, at a certain fiber volume fraction, crack percolation may occur, leading to sample failure in composites containing copper-titanium. Conversely, in copper/carbon fiber composites, fiber pull-out allows for deformation to occur.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Multidisciplinary
Wei Zhang, Zhichao Ma, Dongni Liu, Junming Xiong, Hongwei Zhao, Luquan Ren
Summary: In this study, graphene oxide (GO) reinforced high-entropy alloy (HEA) composites with different GO contents were synthesized and their surface hardness and wear resistance were comparatively investigated. The results showed that an appropriate amount of GO significantly improved the surface hardness and wear resistance of the materials, but excessive GO content resulted in decreased hardness and increased friction coefficient.
Article
Chemistry, Physical
Tao Meng, Yan Feng, Chaoqun Peng, Zhiyong Cai, Meng Wang
Summary: Mo-50Cu composite plates were produced through ball milling, hot isostatic pressing, and hot rolling. The microstructure and properties of the composites under different rolling reductions were investigated. Plastic deformation primarily occurred in the Cu phase when the rolling reduction was below 38%. As the reduction increased, the texture of the Cu phase changed from Goss to Brass and S, and plastic deformation occurred in both the Cu and Mo phases. The composite with a 56% reduction exhibited the highest yield strength and tensile strength of 522.3 MPa and 588.8 MPa, respectively, as well as the lowest coefficient of thermal expansion of 9.81 x 10-6 center dot K-1.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
H. M. Wang, J. Q. Liu, G. R. Li, F. Tang, Y. W. Yan, L. P. Gao, Y. T. Zhao
Summary: This study presents a novel method to enhance the density, interface bonding strength, and mechanical properties of B4Cp/Al composites by incorporating TiB2. The (TiB2p+B4Cp)/Al composites exhibit a clean interface and improved performance, with high compactness and compressive strength. The addition of TiB2 synergistically enhances densification and ameliorates interfaces and microstructure, leading to optimized composite properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Enhao Wang, Xiaoting Qi, Fuwei Kang, Shangzhuo Li, Wei Jiang, Yuqiang Han, Chunfa Lin, Chunhuan Guo
Summary: In this study, a graphene powder-reinforced Ti-Al metal-intermetallic laminated composite was fabricated using hot rolling and vacuum hot-pressing sintering. The microstructure of the composite was characterized using SEM, EDS, XRD, and TEM. The results showed the formation of the single-phase Al3Ti at the interface between the Ti layer and Al layer, and good bonding between the graphene powder and pure Al during preparation. The mechanical tests demonstrated that the composite exhibited enhanced strength and superior plasticity, with ductile fracture in the Ti and Al layers and brittle fracture at the interface.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Tingting Zuo, Meng Wang, Jiangli Xue, Yadong Ru, Yue Wu, Fazhu Ding, Bo Da, Zhuang Xu, Peter K. Liaw, Zhaoshun Gao, Li Han, Liye Xiao
Summary: High-performance Cu/graphene composites synergistically strengthened by nanoparticles were synthesized using different organometallic substances. The TiO2-doped Cu/graphene composite exhibited high hardness, great plasticity, and high electrical conductivity. The composite wire processed by severe cold deformation displayed high electrical conductivity, great tensile strength, and high softening temperature.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Physical
Xiang Gao, Mengyue Peng, Xuexi Zhang, Mingfang Qian, Aibin Li, Lin Geng, Huan Wang, Hua-Xin Peng
Summary: The effects of reinforcement aspect ratio on the properties of particle-and whisker-reinforced aluminum composites with network reinforcement distribution were investigated. The modulus and yield strength showed a U-shaped dependence on the aspect ratio of reinforcement due to the balance between aspect ratio and local volume fraction in the network architecture. The fracture elongation of the network composites increased with reinforcement aspect ratio, with SiCp/Al composite exhibiting brittle fracture behavior and SiCw/Al network composite showing ductile fracture behavior due to macro-interfacial decohesion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Jiahua Zhu, Yuanfei Cai, Yan Zhang, Xiaodi Liu, Jinseng Tian, Jiang Ma, Jun Shen
Summary: The FeSiB-rich particle-reinforced Cu metal matrix composites were successfully fabricated using the spark plasma sintering technique. The composites showed significantly enhanced strength without sacrificing ductility, which was mainly attributed to the homogeneously distributed reinforcements and high interfacial strength.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Katarzyna N. Braszczynska-Malik
Summary: This paper presents the fabrication and microstructure analysis of a new hybrid metal matrix composite named AZ91/(SiC + Ti)(p). The analysis revealed the presence of primary dendrites of the alpha phase, alpha + gamma eutectic, and gamma phase in the composite microstructure, in addition to the reinforced particles. The composite exhibited uniform distribution of Ti particles and revealed SiC particles inside the primary dendrites of the alpha phase, on the Ti particles, and in the interdendritic regions. Mechanical testing showed that the fabricated AZ91/(SiC + Ti)(p) hybrid composite had higher mechanical properties compared to the unreinforced AZ91 matrix alloy.
Article
Materials Science, Multidisciplinary
Xudong Chen, Jun Xu, Kaihong Zheng, Xintao Li, Tianguo Wang, Shengli Han, Yuehua Kang, Bo Feng, Hong Yang, Nan Zhou, Weiwen Zhang, Fusheng Pan
Summary: In this study, AZ91 alloy composites reinforced with different weight percentages of Ti particles were prepared through stir casting and ball milling process. The results indicate that the addition of Ti particles can enhance the mechanical properties of AZ91 alloy sheets, and the 2Ti/AZ91 composite sheet along the extrusion direction exhibits the best comprehensive mechanical performance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Hengchao Shi, Longchen Duan, Songcheng Tan, Xiaohong Fang
Summary: The mechanical properties and microstructure characteristics of Fe-Cu based metal matrix composites are influenced by Fe/Cu ratio and molten state contents. Mechanical properties initially increase with decreasing Fe/Cu ratio, but sharply drop when Cu becomes the main component, with the best performance at a Fe/Cu ratio of 7:3. The effects of Fe/Cu ratio are also reflected in the strength of bonding interfaces, with Fe-Fe, Fe-Cu, and Cu-Cu interfaces in descending order of strength.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Taiqian Mo, Huaqiang Xiao, Bo Lin, Wei Li, Pengju Wang, Kai Ma
Summary: This study systematically investigates the mechanical behavior of tri-metallic Al/Al/Steel composites, focusing on the effect of strengthening mechanisms introduced by interlaminar and internal microstructures. The results show that the tri-metallic composites exhibit excellent interface bonding and inhibited intermetallic compound formation. The mechanical properties of the tri-metallic composites are significantly improved compared to bi-metallic Al/Steel composites due to the precipitation strengthening behavior of the high-performance 7075Al. Various annealing treatments are conducted to further optimize the strength and ductility of the tri-metallic composites by inducing strengthening mechanisms near the interface.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
T. Chen, H. Z. Lu, W. S. Cai, L. H. Liu, Z. Wang, C. Yang
Summary: We discovered a new hierarchical microstructure in ultrastrong Ti-6Al-4V composite with TiC reinforcement fabricated via pressureless sintering. The hierarchical microstructure consists of primary thick β-Ti laths surrounding coarse equiaxed α-Ti zones, which consist of cellular structures with ultrafine equiaxed α-Ti matrix and nano/ultrafine β-Ti lamellar. The hierarchical structure originates from the inhibiting effect of nano TiC particles on β-Ti grain growth and their role as nucleation sites for α-Ti grains. The hierarchical composite exhibits ultrahigh tensile yield strength, surpassing Ti-6Al-4V alloy and its sintered composites.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Physical
Gang Chen, Tao Luo, Shucheng Shen, Jixiang Zheng, Xiaotian Tang, Tao Tao, Wei Xue
Summary: A new preparation method for W/FeNiMnAlW high-entropy alloy matrix composites was presented, showing superior mechanical properties due to the effective combination of FCC phase and ordered BCC phase, as well as the uniform distribution of W particles with good metallurgical bonding.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Ru Jiang, Xun Sun, Haitao Liu, Yunxin Liu, Weiguo Mao
Summary: In this study, a high solid content alumina slurry was used to prepare NextelTM 610 fiber reinforced alumina composite, and a rapid lamination route was proposed. The composite showed reduced shrinkage cracks in the matrix and maintained a porous structure. The mechanical properties of the N610/alumina composite, with weak matrix and weak interface, were investigated and found to be higher than many oxide/oxide composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Cheng-Dong Li, Xiao-Jun Wang, Wei-Qing Liu, Ku Wu, Hai-Long Shi, Chao Ding, Ming-Yi Zheng
Summary: A novel approach to fabricate bulk carbon nanotube-reinforced Mg matrix composites with uniform carbon nanotubes has been successfully developed. The approach involves pre-dispersion and ultrasonic vibration, resulting in the homogeneous distribution of single carbon nanotubes in the composites. The presence of carbon nanotubes significantly improves the mechanical properties of the composites and achieves good interfacial bonding with the matrix.
Article
Metallurgy & Metallurgical Engineering
X. Q. Liu, X. G. Qiao, R. S. Pei, Y. Q. Chi, L. Yuan, M. Y. Zheng
Summary: The influence of extrusion rate on the microstructure and mechanical properties of the AXM1104 alloy was studied. With increasing extrusion rate, the grain size and particles diameter increased, while the grain boundary segregation and basal fiber texture decreased. The tensile yield strength decreased and the elongation to failure increased as the extrusion rate increased.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Yong Jia, Shaosong Jiang, Jun Tan, Zhen Lu, Jufu Jiang, Xiaojun Wang
Summary: This study investigates the evolution of local stresses during deformation twinning using in-situ tensile testing and high-resolution electron backscatter diffraction. The results indicate that the local shear stress evolves dynamically during twinning, with negative shear stress observed during the propagation stage. The local Schmid factor and Luster Morris m' value times the LSF of the twin variant may reveal a threshold for the slip-induced twinning process.
Article
Chemistry, Physical
Xuejian Li, Hailong Shi, Xiaojun Wang, Xiaoshi Hu, Chao Xu, Wenzhu Shao
Summary: A novel in-situ liquid metallurgy strategy is proposed for fabricating Mg matrix composites with excellent mechanical properties by a chemical reaction between CO2 and Mg melt. This processing route enables simultaneous in-situ synthesis and modification of graphene in the metal melt, resulting in an optimal microstructure.
Article
Chemistry, Physical
Yuanqing Chi, Jinwei Liu, Zhijie Zhou, Shouzhong Wu, Weiqing Liu, Mingyi Zheng
Summary: This study mainly investigates the microstructure, texture, and mechanical properties of Mg-Gd-Y alloys (Mg-8.5Gd-2.5Y-0.3Zr (wt%) (0Zn) and Mg-8.5Gd-2.5Y-0.5Zn-0.3Zr (wt%) (0.5Zn) alloys) under indirect extrusion at different temperatures. The addition of 0.5 wt% Zn promotes the dynamic precipitation of beta-Mg5RE phases, resulting in a well-distributed distribution in the 0.5Zn alloy compared to a local distribution in the 0Zn alloy. The presence of zinc and the extrusion temperature influence the texture formation and mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Industrial
Zijian Zhang, Lin Yuan, Mingyi Zheng, Qinghe Wei, Debin Shan, Bin Guo
Summary: This study developed a large-scale AZ80 magnesium alloy sample through a two-step MDF process and artificial aging. The sample exhibits uniform mechanical properties and good plasticity, making it suitable for load-bearing components. Furthermore, this process can benefit the general application of magnesium alloys since the excellent mechanical properties do not rely on the addition of specific elements.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
S. Z. Wu, Y. Q. Chi, G. Garces, X. G. Qiao, M. Y. Zheng
Summary: The Mg96Y2Ni2 (at. %) alloy with a volume fraction of 50% of LPSO phase was processed by extrusion and ECAP. Different microstructures of bimodal alpha-Mg matrix and fully dynamic recrystallized matrix were obtained by controlling the processing parameters, and the relationship between microstructure and tensile properties was investigated. The extruded alloy at 390 degrees C showed ultrahigh tensile yield strength but low elongation to failure, while the alloy extruded at 450 degrees C exhibited a balanced strength-ductility behavior. Fully recrystallized ultra-fine Mg grains contributed to the increase of elongation to failure. This work provides theoretical guidance for developing Mg-LPSO two-phase alloys with excellent strength-ductility synergy.
MATERIALS CHARACTERIZATION
(2023)
Article
Nanoscience & Nanotechnology
C. C. Li, Z. H. Xia, X. G. Qiao, I. S. Golovin, M. Y. Zheng
Summary: The study investigated the influence of Mn content (0.4, 0.8, 1.2 wt.%) on the microstructure and mechanical properties of as-extruded dilute binary Mg-Mn alloys. Increasing Mn content resulted in a decrease in the volume fraction and size of dynamically recrystallized (DRXed) grains. Segregation of Mn atoms and nano alpha-Mn dynamical precipitates were observed at the grain boundaries, with the amount of precipitates increasing with Mn content. Tensile tests showed that Mn content significantly affected mechanical properties, with the Mg-0.8 wt.% Mn alloy exhibiting excellent ductility at room temperature.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
He Wu, Wenchen Xu, Debin Shan, XiaoJun Wang, Bin Guo, Bo Cheng Jin
Summary: The particle/matrix interface of metal matrix composites (MMCs) can strengthen the material by introducing plastic strain gradients. However, limited research has considered all damage mechanisms associated with the particle/matrix interface. In this study, a finite element model based on conventional theory of mechanism-based strain-gradient (CMSG) plasticity was developed to analyze the damage evolution and failure behavior of SiCp/AZ91 composite. The results show that the plastic strain gradients can describe interface debonding and provide a more reasonable distribution of stress and plastic strain compared to the classical J2 flow theory.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Xuanchang Zhang, Hailong Shi, Xiaojun Wang, Shuai Zhang, Peng Luan, Xiaoshi Hu, Chao Xu
Summary: AZ31 magnesium alloy was successfully manufactured by the electron beam additive manufacturing (EBAM) technique. The microstructure and mechanical properties of the EBAM samples were analyzed under different energy densities and deposition passes. The results showed that the energy density significantly influenced the manufacturability of the sample, and the sample with an energy density of 1.432 x 1010 Jm−3 exhibited the best manufacturability. The EBAM specimens demonstrated excellent tensile strength and elongation, attributed to dispersion strengthening and grain refinement.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Metallurgy & Metallurgical Engineering
Peitang Zhao, Xuejian Li, Hailong Shi, Xiaoshi Hu, Chunlei Zhang, Chao Xu, Xiaojun Wang
Summary: In this study, graphene reinforced magnesium matrix composites were prepared using the in situ liquid-state method. The tensile strength of the composites was improved by increasing the content of graphene nanoparticles (GNPs). Additionally, the composites exhibited a significant plastic deformation stage, with the ductility of the 0.12 GNPs/Mg6Zn composites reaching 27.6%. Thus, this novel preparation method has great potential for fabricating Mg matrix composites with high strength and high ductility.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Hailong Shi, Xiaojun Wang, Yeyang Xiang, Chunlei Zhang, Xuejian Li, Chao Xu, Xiaoshi Hu, Weimin Gan
Summary: Constructing a layered structure is an effective approach to achieve a balance between strength and toughness. The toughening mechanisms for metal matrix composites include crack deflection and stress concentration mitigation. The study found that GNS layers can promote dislocation emission and alleviate stress concentration, enhancing the toughness of the composite.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Xiaoqing Liu, Xiaoguang Qiao, Liyao Ye, Xianke Zhang, Mingyi Zheng
Summary: A Mg-1Al-1Ca-0.4Mn (AXM1104, wt%) alloy extruded at 250°C with a ram speed of 0.1 mm/s obtains a unique bimodal microstructure. The as-extruded alloy exhibits a high tensile yield strength of 474 MPa and a low ductility of 2.1%, surpassing conventionally extruded rare-earth-free Mg alloys reported so far. After annealing at 300°C for 10 min, the annealed alloy achieves a good strength-ductility balance, with a yield strength of 426 MPa and an elongation of 5.4%. The ultrahigh yield strength of the as-extruded alloy is attributed to the combined strengthening effect of grain boundary, dislocation, and texture, while the as-annealed alloy is mainly strengthened by both grain boundary strengthening and precipitation strengthening from planar Al2Ca nano phase.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Hailong Shi, Xiaojun Wang, Chunlei Zhang, Xuejian Li, Xiaoshi Hu, Weimin Gan, Chao Xu
Summary: In this study, bicrystal microstructure of graphene nanosheets reinforced copper matrix laminated composites was investigated to understand the deformation behavior. Various analysis methods were applied to identify the activated slip systems and deviations in trace angle. The findings provide valuable insights for exploring the underlying deformation mechanisms in polycrystalline materials.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Physical
Zhenming Sun, Hailong Shi, Xiaoshi Hu, Mufu Yan, Xiaojun Wang
Summary: This study presents a laminated CNTs/Mg composite material fabricated by spray-deposition and subsequent hot-press sintering, which effectively enhances both the strength and electromagnetic interference (EMI) shielding effectiveness (SE). The introduction of CNTs increases the strength of the composites through thermal expansion mismatch strengthening and blocking dislocation movements. The CNT-induced laminated structure redistributes local strain and alleviates strain localization, enhancing toughness. Surprisingly, the composite also exhibits excellent EMI SE in the X band due to the strong interactions between the laminated 'Mg-CNT-Mg' structure and incident electromagnetic waves. The lightweight CNTs/Mg composite with outstanding mechanical properties and enhanced EMI performance can be used as shell materials for electronic packaging components or electromagnetic absorbers.
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)
