Article
Engineering, Mechanical
S. Falco, N. Fogell, S. Kasinos, L. Iannucci
Summary: This paper presents an approach to evaluate the macroscopic properties of ceramic materials based on micromechanical simulations performed on Representative Volume Elements (RVEs). The results show good agreement between numerical simulations, experimental measurements, and analytical calculations, providing an effective prediction of elastic deformation and brittle failure behavior.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Saroj Kumar Basantia, Ankita Bhattacharya, Niloy Khutia, Debdulal Das
Summary: This study investigated the influence of different heat treatment conditions on the microstructures of low carbon low alloy steel specimens on their mechanical properties and flow behavior. It was found that the FM structure exhibited higher strength, the FP structure had better ductility, while the FB structure showed moderate strength and ductility.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Pedro Vinicius Sousa Machado, Ferhun C. Caner, Luis Llanes, Emilio Jimenez Pique
Summary: In this study, the mechanical behavior of tungsten carbide-cobalt (WC-Co) composites under monotonic loads is extensively investigated using nanoindentation tests, tension tests on nanowires, and compression tests on micropillars. A novel computational framework is proposed, consisting of two different microplane constitutive models for the WC and Co phases. Finite element simulations based on experimental tomography re-constructions are employed to validate the models and provide further insights into the mechanical behavior of these composites.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Rajdeep Bhattacharyya, Masud Rana, Abhisek Gupta, Dibyendu Dutta Majumdar, Jyotsna Dutta Majumdar, Amit Roy Chowdhury
Summary: This paper presents a method for generating models of porous titanium material from micro-computed tomography radiograph images and investigates the effect of loading on these models using submodeling. The stress contour and failure initiation at the micro level are observed, and the nature of failure in the micro-porous localized regions is predicted. Additionally, Computational Fluid Dynamics analysis is used to determine the average wall shear stress of a scaffold.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Materials Science, Composites
Lei Wan, Zahur Ullah, Dongmin Yang, Brian G. G. Falzon
Summary: The inter-fibre failure analysis of carbon fibre-reinforced polymer composites under biaxial loading was investigated in this study. Two commonly used failure criteria, Tsai-Wu and Hashin, were comprehensively evaluated using finite element-based micromechanical analysis. The study utilized high-fidelity three-dimensional representative volume elements subjected to biaxial loadings, assuming transversely isotropic and linearly elastic carbon fibers. The mechanical response of the matrix and fiber-matrix interface was simulated using the Drucker-Prager plastic damage constitutive model and cohesive zone model, respectively. The study found that the micromechanics-based numerical model was effective in assessing the two failure criteria.
JOURNAL OF COMPOSITE MATERIALS
(2023)
Article
Engineering, Mechanical
Saman Sayahlatifi, Zahra Zaiemyekeh, Chenwei Shao, Andre McDonald, James D. Hogan
Summary: 3D micro-scale finite element models were developed to analyze the failure mechanisms and behavior of CSAM Al-Al2O3 composites under different stress states. The models quantified the matrix ductile failure, particle cracking, and matrix/particle debonding mechanisms based on crack volume fraction, fraction of cracked particles, and fraction of debonded interfacial nodes. The models were validated and used to study the effects of particle content and size on material behavior. The results showed that the failure mechanisms are activated in a specific order and that particle size minimally affects the material strength and flow stress under shear. This work provides a better understanding of the stress-state-dependent evolution of failure mechanisms and has implications for the design of improved Al-Al2O3 composites.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Anastasios Drougkas, Vasilis Sarhosis, Georgia Thermou
Summary: The homogenisation scheme based on inclusion modelling, coupled with constitutive laws for damage, has been successfully implemented in a finite element model to simulate the damage in concrete and reinforcement bars in reinforced concrete structures. The model achieves accurate results with low computational cost, capturing the main characteristics and damage of the constituent materials of reinforced concrete.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Mechanics
A. R. Abaei, T. J. Vaughan, W. Ronan
Summary: The mechanical properties of biodegradable polymers are influenced by molecular weight and crystallinity. In this study, a modeling approach was used to establish a relationship between physical properties (molecular weight, crystalline volume fraction, porosity) and macroscopic mechanical properties (modulus) of a semi-crystalline polymer (PLLA) during degradation. A database of mechanical behavior was created to predict the modulus without multiscale approaches. The simulations provided insight into the emergence of porosity and the transition to brittle behavior during degradation.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Article
Nanoscience & Nanotechnology
Atef Hamada, Ali Khosravifard, Mohammed Ali, Sumit Ghosh, Matias Jaskari, Mikko Hietala, Antti Jarvenpaa, Mohamed Newishy
Summary: This study laser-welded plates of low-alloyed ultra-high-strength carbon steel and 316L austenitic stainless steel at two different energy inputs. The microstructural characteristics and mechanical properties of the welded joints were examined and analyzed. The results showed that the dominant phase structures in the fusion zones were martensite with a small fraction of austenite, and the microhardness values varied between different zones.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Thermodynamics
Szymon Nosewicz, Grzegorz Jurczak, Tomasz Wejrzanowski, Samih Haj Ibrahim, Agnieszka Grabias, Witold Weglewski, Kamil Kaszyca, Jerzy Rojek, Marcin Chmielewski
Summary: This work comprehensively analyzes the heat transfer behavior and thermal conductivity of porous materials manufactured by spark plasma sintering. The study investigates the effects of different process parameters on material performance and characterizes the microstructure of the samples. It reveals the necessity of considering the additional thermal resistance caused by sintered necks and provides updated results for thermal conductivity evaluation, achieving good agreement with experimental data.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Szymon Nosewicz, Grzegorz Jurczak, Tomasz Wejrzanowski, Samih Haj Ibrahim, Agnieszka Grabias, Witold Weglewski, Kamil Kaszyca, Jerzy Rojek, Marcin Chmielewski
Summary: This work presents a comprehensive analysis of heat transfer and thermal conductivity of porous materials manufactured by spark plasma sintering. The study includes experimental, theoretical, and numerical investigations. Microstructural characterization was extensively examined, and the experimental results were compared with theoretical and numerical ones. The Landauer relation was modified to take into account the thermal resistance of necks, resulting in satisfactory reconstruction of experimental results.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Materials Science, Composites
D. Kempesis, L. Iannucci, K. T. Ramesh, S. Del Rosso, P. T. Curtis, D. Pope, P. W. Duke
Summary: This research develops RVE-based finite element models to investigate the influence of microstructure on the overall mechanical behavior of UHMWPE composites. The models consider the randomness of fiber packing sequence and variations in fiber cross-sectional shape, and analyze the effects of interface properties uncertainties on the mechanical response. By calibrating the constituent properties and validating the models with experimental results, the shear and compression responses of UHMWPE laminates are studied.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Marine
Yu Peng, Zhen-Yu Yin
Summary: This study investigated the micro-mechanism of interaction between the suction pile and granular soil under an inclined pulling load using the coupled DEM-FEM model. Discontinuity and large deformation occurrences in soil were successfully modeled. The changes in pulling force under different pulling angles were found to be a result of the suction pile-soil interaction modes. The study suggests that neglecting the pulling angle of mooring lines can lead to severe misestimation of the pull-out capacity of a suction pile and misjudgment of the failure pattern of granular soil.
Article
Chemistry, Physical
George Calin Dindelegan, Alexandra Caziuc, Ioana Brie, Olga Soritau, Maximilian George Dindelegan, Vasile Bintintan, Violeta Pascalau, Carmen Mihu, Catalin Popa
Summary: This study proposed a novel complex multi-layered material to assist in the healing of implantation wound and the development of new vital bone by slow delivery of viable growth factors. The application of growth factors accelerated the proliferation and differentiation of cells, especially IGF1 and BMP2. Results showed a more structured tissue around BMP2 samples.
Article
Chemistry, Multidisciplinary
Hassan Mehboob, Abdelhak Ouldyerou, Muhammad Farzik Ijaz
Summary: The study examines the influence of porous implants on full and partial osseointegration in different bone qualities. Finite element models of porous implants were created and combined with normal and weak bones to simulate full and partial osseointegration. The results indicate that decreasing implant stiffness leads to increased stress in surrounding bones during full osseointegration, but decreased stress during partial osseointegration. Moreover, using porous implants in normal bone can enhance bone density, while porous implants may reduce susceptibility to bone damage in weak bones.
APPLIED SCIENCES-BASEL
(2023)
Review
Engineering, Marine
Yuanzhen Cai, Milad Bazli, Asanka P. Basnayake, Martin Veidt, Michael T. Heitzmann
Summary: This paper discusses the application of composite springs as mooring tensioners in ocean energy development. Composite springs have many advantages over metal springs, such as corrosion resistance, high specific strain energy, and the ability to adjust the spring constant. The paper also summarizes the fatigue performance, seawater durability, and manufacturing methods of composite springs, as well as their potential applications in offshore power generation and other fields.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Hooyar Attar, Shima Ehtemam-Haghighi, Damon Kent, Matthew S. Dargusch
Summary: The design and fabrication of low-cost biomedical Ti alloys has become a topic of interest. The study utilized laser engineered net shaping (LENS) to fabricate Ti-Mo alloys from mixed elemental powders, and found that densification is slightly reduced with increasing Mo content. The structure and microstructure of the Ti-Mo alloys were found to depend strongly on the level of Mo additions. Ti-10%Mo exhibited the lowest elastic modulus, highest microhardness, and yield strength due to its dominant beta phase structure and the presence of the nanoscale omega phase.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jingqi Zhang, Michael Bermingham, Joseph Otte, Yingang Liu, Matthew Dargusch
Summary: This study demonstrates how to achieve uniform and enhanced tensile ductility by minimizing the in-situ intrinsic heat treatment effect. By adjusting the heating and deposition time, the tensile ductility of Ti-5Al-5Mo-5V-3Cr material was successfully improved without notable variation.
SCRIPTA MATERIALIA
(2023)
Article
Polymer Science
Moustafa Mahmoud Yousry Zaghloul, Karen Steel, Martin Veidt, Michael T. T. Heitzmann
Summary: High wear rates and frictional coefficients have always been the primary reasons for limiting the service life of critical elements such as pumps, couplings, bushings, bearings and gears. The premature and erratic failures are costing the industries extensive amounts of money every year. It is vital to enhance the tribological characteristics of thermoplastics.
Article
Electrochemistry
Xingrui Chen, Jeffrey Venezuela, Matthew Dargusch
Summary: This study presents highly pure Mg-Ge alloys that demonstrate exceptional corrosion resistance and discharge performance as anodes for Mg-air batteries. The UHP Mg-0.5Ge exhibits a corrosion rate of 0.15 mm/y, attributed to its low impurity content, restricted hydrogen evolution reaction (HER), and the presence of a protective surface film. The energy density of Mg-0.5Ge is 37% higher than that of UHP Mg at a current density of 10 mA/cm2, owing to its more negative corrosion potential and suppressed non-diffusive evolution (NDE).
ELECTROCHIMICA ACTA
(2023)
Review
Materials Science, Multidisciplinary
Nagasivamuni Balasubramani, Jeffrey Venezuela, David StJohn, Gui Wang, Matthew Dargusch
Summary: It has been found that refining the as-solidified alloy structure can improve structural properties and reduce solidification defects. External field melt processing and solidification studies have provided effective methods for refining the structure and exploring the mechanisms. The origin of fine grains may be attributed to heterogeneous nucleation, fragmentation of dendrites and grains, and separation from the melt and mold wall under vibration or agitation. This review critically compares the current understanding of these grain refinement mechanisms.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Samuel Rogers, Matthew Dargusch, Damon Kent
Summary: This study presents a novel and cost-effective method to produce aluminium nitride (AlN) powder by directly nitridating loose aluminium powder at low temperatures (as low as 500℃) using a vacuum tube furnace under flowing high-purity nitrogen. The addition of a small amount of magnesium powder (1 wt.%) facilitates the nitridation reaction. The results show that AlN can be obtained at temperatures higher than or equal to 500℃, with the highest yield of 80-85% achieved at 530℃ for a duration of at least 1 hour. At temperatures around 510℃, a relatively high proportion of AlN (>73% after 6 hours) can be obtained while maintaining excellent friability for manual reprocessing into powder.
Article
Materials Science, Biomaterials
Meili Zhang, Nan Yang, Ali Dehghan-Manshadi, Jeffrey Venezuela, Michael J. Bermingham, Matthew S. Dargusch
Summary: In this study, Fe35Mn/Ake composites were prepared using a powder metallurgy route and the effects of different Ake contents on the microstructure, mechanical properties, degradation, and biocompatibility of the composites were investigated. The addition of Ake increased the relative density, compressive yield strength, and elastic modulus of the pure Fe35Mn, but decreased the ductility. Higher concentrations of Ake potentially increased the corrosion rate of Fe35Mn. However, all tested compositions showed no measurable weight loss after immersion in simulated body fluid for 4 weeks, indicating good corrosion resistance and biocompatibility. Human osteoblasts exhibited increasing viability on Fe35Mn/Ake composites with higher Ake content, suggesting improved in vitro biocompatibility. Fe35Mn/Ake may have potential for biodegradable bone implant applications, especially Fe35Mn/30Ake, if the slow corrosion issue can be addressed.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Article
Materials Science, Biomaterials
Sharifah Almathami, Jeffrey Venezuela, Nan Yang, Yuan Wang, Zahrina Mardina, Matthew Dargusch
Summary: This study investigates the influence of biologically relevant ions on the corrosion of zinc in physiological fluids. Electro-chemical techniques were used to study the degradation of pure zinc exposed to different physiological electrolytes containing chlorides, carbonates, sulfates, and phosphates. The most aggressive ions are chlorides, while carbonates and phosphates reduce the corrosive attack and sulfates disrupt the passive layer of zinc, altering its corrosion behavior.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Article
Engineering, Manufacturing
C. H. Ng, M. J. Bermingham, M. S. Dargusch
Summary: High energy input additive manufacturing technologies, such as wire-based directed energy deposition, have high deposition rates but can result in coarse microstructures and defects. This work demonstrates a method to produce high-quality additively manufactured products using low-quality feedstock materials that are usually considered unsuitable. By intentionally introducing large pores using contaminated wire feedstock in a metastable β-Ti alloy, and subsequent hot isostatic pressing, porosity-free parts with refined grain size and excellent ductility can be obtained through dynamic recrystallisation. This approach is applicable to various metallic alloys produced by other additive manufacturing techniques, allowing the engineering of completely homogenous equiaxed grain microstructures.
ADDITIVE MANUFACTURING
(2023)
Review
Engineering, Biomedical
Yuan Wang, Min Hong, Jeffrey Venezuela, Ting Liu, Matthew Dargusch
Summary: This article reviews the secondary functions of flexible piezoelectric materials, including stretchability, hybrid energy harvesting, and self-healing. Insights into the latest strategies and mechanisms based on piezoelectric fundamentals are provided to unravel the link between structural characteristics and functional performance. The remaining challenges and future outlooks for developing secondary functions are proposed.
BIOACTIVE MATERIALS
(2023)
Article
Engineering, Biomedical
Nan Yang, Jeffrey Venezuela, Rachel Allavena, Cora Lau, Matthew Dargusch
Summary: This work developed a new zinc-nutrient element alloy (Zn-1.0Cu-0.5Ca) into absorbable staples (SAS) for wound closure. The Zn SAS showed higher fixation force than the commercially available PLGA SAS and exhibited uniform degradation behavior. However, the slow degradation rate of Zn SAS and higher local foreign body responses need to be addressed to improve implant retention and biocompatibility.
ACTA BIOMATERIALIA
(2023)
Review
Chemistry, Multidisciplinary
Ting Liu, Yuan Wang, Min Hong, Jeffrey Venezuela, Wei Shi, Matthew Dargusch
Summary: This article comprehensively reviews the applications and prospects of biodegradable piezoelectric materials in biomedical field, including biological force sensing, self-powering biomedical devices, tissue regeneration and medical diagnosis. It summarizes the material synthesis methods and device fabrication techniques, discusses the strategies to achieve high-performance biodegradable piezoelectric materials and devices, and explores their biomedical applications. Finally, future research directions are proposed.
Article
Chemistry, Physical
Xingrui Chen, Jeffrey Venezuela, Zhiming Shi, Qichi Le, Matthew Dargusch
Summary: We investigated the discharge performance and electrochemical properties of an as-extruded Mg-5SmxAl (x 1/4 0,1,3) anode for Mg-air batteries. Adding Al modified the phase composition and grain size of the anode. The addition of 1 wt% Al (Mg-5Sm-1Al) induced a high discharge voltage and power density due to the stimulation of the evenly distributed, fine Al11Sm3 particles. However, these particles increased the parasitical anodic hydrogen reaction rate, resulting in a decrease in anodic efficiency. The addition of 3 wt % Al (Mg-5Sm-3Al) promoted the formation of an aluminium oxide film on the anode surface, which suppressed the anodic hydrogen reaction to improve the anodic efficiency. This film increased the battery's internal resistance resulting in low voltage. This anode is a good candidate for heavy-duty battery applications, where a steady voltage output and long service life are desired. By controlling the Al content, the tailoring of discharge performance of the Mg-Sm-Al anode is feasible to satisfy different battery load requirements.
MATERIALS TODAY ENERGY
(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)
