Review
Nanoscience & Nanotechnology
Hamed Mirzadeh
Summary: This overview article summarizes the high strain rate superplasticity achieved through friction stir processing (FSP), emphasizing the importance of microstructural characteristics for superplastic forming operations. It also discusses the effects of main processing parameters on heat input and grain size, as well as recent progress in the application of FSP for processing superplastic materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Automation & Control Systems
Nanyang Zhu, Chaoyang Sun, Lingyun Qian, Mingjia Wang, Xintong Li
Summary: This study proposes a new variable circular channel angular extrusion (VCCAE) process for manufacturing magnesium alloy plates with rib-web structure. The feasibility and accuracy of the process are validated through numerical simulations and experiments. The results show that stress and strain distribution in the longitudinal section is highly inhomogeneous, with significant stress concentration at the shear plane. The microstructure in the angular region is more uniform and finer, indicating that severe shear deformation induced by the angular channel promotes deformation uniformity and grain refinement.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Zeinab Savaedi, Reza Motallebi, Hamed Mirzadeh, Rouhollah Mehdinavaz Aghdam, Reza Mahmudi
Summary: This overview article reviews the superplastic behavior of medical magnesium alloys. It discusses the basics of superplasticity and superplastic forming via grain boundary sliding (GBS). The properties of biomedical Mg alloys are tabulated. The critical discussion focuses on the superplasticity of biocompatible Mg-Al, Mg-Zn, Mg-Li, and Mg-RE alloys, emphasizing the influence of grain size, hot deformation temperature, and strain rate on tensile ductility.
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Takahiro Masuda, Yongpeng Tang, Intan Fadhlina Mohamed, Zenji Horita
Summary: In this study, an AZ61 Mg alloy was processed by high-pressure torsion (HPT) to refine the grain size. Using a facility with an upscaled capacity of 500 ton, 30 mm diameter disks were processed under 6 GPa. Tensile tests at elevated temperatures showed that the grain size was reduced to around 320 nm after HPT processing at 423 K for 10 turns. This grain size reduction led to a superplastic elongation of more than 400% at 473 K with an initial strain rate of 1.0 x 10(-3) s(-1). Comparing the results with conventional 10 mm diameter disks, it was found that the total elongation was invariably higher for the 30 mm disks, and this difference was attributed to the anisotropy due to material flow.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Review
Engineering, Civil
Reza Motallebi, Zeinab Savaedi, Hamed Mirzadeh
Summary: High-entropy alloys (HEAs) are a new class of engineering materials with unique mechanical and functional properties. Superplastic forming of HEAs might be a viable route for actual applications of these alloys. This monograph summarized the superplastic behaviors of HEAs and medium-entropy alloys (MEAs), along with reviewing the basics of high-entropy alloys and fine-grained superplasticity.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Review
Materials Science, Multidisciplinary
Hamed Mirzadeh
Summary: This monograph provides an overview of friction stir processing (FSP) of surface metal-matrix composites (MMCs) using AZ91 magnesium alloy, summarizing the results related to various reinforcing particles and explaining the AZ91 composite fabricating methods based on FSP. The effects of introducing second-phase particles and FSP process parameters on the microstructural modification, mechanical properties, wear/tribological behavior, and corrosion resistance are discussed. Furthermore, suggestions for future work, such as focusing on superplasticity, metal additive manufacturing processes, and common reinforcing phases, are proposed.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jianheng Cai, Hua Wang, Cheng Qiu, Genghua Cao, Datong Zhang
Summary: ZK60 magnesium alloy is refined through submerged friction stir processing (SFSP), leading to the observation of high-strain-rate superplasticity (HSRS) at elevated temperature. The excellent HSRS is attributed to the uniform fine-grained structure and the relatively high fraction of high-angle grain boundaries, which facilitate grain boundary sliding. Additionally, the presence of dispersed fine particles/precipitates enhances the microstructural stability of the specimens.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Metallurgy & Metallurgical Engineering
Oscar A. Ruano, Marta Alvarez-Leal, Alberto Orozco-Caballero, Fernando Carreno
Summary: Through friction stir processing, the WE54 magnesium alloy obtained superplasticity at high temperatures, with grain sizes less than 1μm and a tensile superplastic elongation of 756%, attributed to the grain boundary sliding mechanism (GBS).
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Kai Hu, Yanjin Guan, Jiqiang Zhai, Yi Li, Fengjiao Chen, Ya Liu, Jun Lin
Summary: Multi-pass friction stir processing (MFSP) is an effective method to enhance the mechanical properties, plasticity, and corrosion resistance of Mg-Li alloy. The tensile strength and microhardness of the treated plate have been improved, and the elongation increased by up to 109.2%.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Vivek Patel, Wenya Li, Joel Andersson, Na Li
Summary: This study focuses on the refinement of microstructure and evaluation of corrosion behavior in thick AZ31B magnesium alloy using stationary shoulder friction stir processing (SSFSP). The results show that the use of stationary shoulder reduces heat input and temperature gradient in the stir zone, leading to improved corrosion resistance of the alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Iwona Bednarczyk, Dariusz Kuc
Summary: This article investigates the influence of extrusion methods on the microstructure and mechanical properties of WE43 magnesium alloy. Different deformation methods were applied to determine their effects on the alloy's structure and properties. The study shows that the KoBo method enables superplastic flow and microstructure refinement. These findings are significant for the development of forming technology for lightweight construction elements.
Review
Chemistry, Physical
Farzad Badkoobeh, Hossein Mostaan, Mahdi Rafiei, Hamid Reza Bakhsheshi-Rad, Filippo Berto
Summary: This review paper discusses the applications and advancements of friction stir welding and processing in magnesium and its alloys, focusing on the influencing parameters and their effects on weld characteristics, as well as the evolution of microstructure, substructure, texture, phase formations, and mechanical properties.
Article
Chemistry, Physical
S. Aravind Krishna, N. Radhika, Bassiouny Saleh, S. Manivannan
Summary: In this study, CoCrFeCuTi High Entropy Alloys (HEA) powder was reinforced on an SS304 steel substrate using a Friction Stir Processing (FSP) approach to achieve grain size refinement and improvement in mechanical properties. The microstructural analysis showed better grain refinement and dispersion of HEA reinforcement in the processed substrate. The Vickers microhardness and tensile strength were improved and the FSP-processed substrate with HEA also exhibited better resistance to corrosion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Materials Science, Multidisciplinary
Zhaoyang Lu, Xuqiang Huang, Jingzhe Huang
Summary: Superplasticity is achieved by reducing grain size, allowing for better commercial forming and improved mechanical properties.
FRONTIERS IN MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Mahya Elyasi, Ahmad Razaghian, Ali Moharami, Masoud Emamy
Summary: This study investigates the microstructure and tensile properties of Mg-0.5Zn-0.2Si-XZr (X: 0, 0.25, 0.5 wt.%) under different processing conditions. Micro addition of Zr element can reduce grain size, but it is affected by Si poisoning effect. Processing the Zr-free alloy can improve its microstructure and mechanical properties. Further improvement in microstructure and mechanical properties can be achieved by multiple-pass FSP treatment of Zr-modified alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Ceramics
Miguel Angel Cobos, Patricia de la Presa, Ines Puente-Orench, Irene Llorente, Irene Morales, Asuncion Garcia-Escorial, Antonio Hernando, Jose Antonio Jimenez
Summary: Samples with different inversion parameter values were prepared through mechanical grinding and thermal annealing treatments, and characterized by X-ray, neutron diffraction, and magnetic measurements. The coexistence of short range antiferromagnetic and ferrimagnetic ordering at low temperature was confirmed for the first time, and a different magnetic phase diagram from previous reports was obtained.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Miguel Angel Cobos, Antonio Hernando, Jose Francisco Marco, Ines Puente-Orench, Jose Antonio Jimenez, Irene Llorente, Asuncion Garcia-Escorial, Patricia de la Presa
Summary: In this study, the antiferromagnetic transition of ZnFe2O4 was investigated, revealing the formation of locally ferrimagnetic phase and coexistence with antiferromagnetic and spin disordered regions when the inversion degree δ is slightly different from zero. The spin disorder disappears under an applied field, and the volume fractions of the three magnetic phases are roughly equal. These results highlight the significant impact of the inversion degree δ on the magnetic properties.
Article
Materials Science, Multidisciplinary
Adriana Eres-Castellanos, Muftah Zorgani, Davood Shahriari, Radu Romanica, Jose Antonio Jimenez, Carlos Garcia-Mateo, Mohammad Jahazi
Summary: This study analyzed the effect of different deformation modes on the microstructure of medium carbon high silicon steel. It was found that tensile ausforming resulted in more rapid and intense strain induced transformations compared to compression ausforming. The study also revealed that ausforming led to anisotropic structures regardless of the deformation mode.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
D. T. Pierce, J. T. Benzing, J. A. Jimenez, T. Hickel, I. Bleskov, J. Keum, D. Raabe, J. E. Wittig
Summary: The influence of temperature and stacking fault energy on the strain-hardening behavior and critical resolved shear stress for twinning in TRIP/TWIP steels was investigated. The study found that an increase in temperature, Mn content, and/or stacking fault energy led to a change in the dislocation glide mechanisms and a decrease in strain hardening rate. Additionally, the alloys exhibited a significant decrease in strength and ductility with increasing temperature.
Review
Engineering, Civil
M. Morawiec, V. Ruiz-Jimenez, C. Garcia-Mateo, J. A. Jimenez, A. Grajcar
Summary: A study was conducted on the isothermal bainitic transformation of a lean medium-Mn steel, revealing incomplete transformation above 425 degrees Celsius and more pronounced bainite formation at lower temperatures.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Ana Crespo, Gloria Perez, Jose A. Jimenez, Irene Llorente, Sagrario Martinez-Ramirez, Emilio Cano, Ivan Diaz
Summary: Weathering steels are commonly used in various fields due to their mechanical properties, resistance to corrosion, and aesthetic properties. An experiment was conducted to compare the colors and surface evolution of accelerated and natural patinas. The results showed that the colors of the accelerated patinas differed from the natural patina at short exposure times but converged at longer exposure times.
Article
Materials Science, Multidisciplinary
Iria Feijoo, Gloria Pena, Maria Julia Cristobal, Marta Cabeza, Pilar Rey
Summary: Aluminium matrix composites (AlMCs) of AA7075 aluminium alloy reinforced with 0.5 and 1 wt.% multiwall carbon nanotubes (MWCNTs) were fabricated using powder metallurgy techniques with varying mechanical milling strategies. The dispersion of MWCNTs was found to be influenced by milling conditions and MWCNT content. The best distribution of reinforcements was achieved by milling 7075 powders and MWCNTs in a high-energy cycle (HEBM) at a rotation speed between 1200 and 1300 rpm. Raman spectroscopy showed no damage to the nanotubes during the milling process, and nanoindentation tests revealed that the 7075-0.5 wt.% MWCNT composites had the best mechanical behavior.
Article
Materials Science, Ceramics
Erwin Sepulveda, R. Mangalaraja, R. Udayabhaskar, Ramon Cobo, Maria Escudero Berzal, Jose Jimenez, Christopher Salvo, Carlos P. Camurri
Summary: In this study, La1 - xSrxGa1-yMgyO3 (LSGM) samples with different compositions and sintering temperatures were prepared by the fast combustion method. The electrical properties of LSGM were evaluated, and it was found that LSGM can exist in two different crystal phases simultaneously. The sintering temperature and composition of the samples were found to have an influence on the conductivity.
JOURNAL OF ELECTROCERAMICS
(2022)
Article
Thermodynamics
M. Morawiec, J. Opara, C. Garcia-Mateo, J. A. Jimenez, A. Grajcar
Summary: This work provides insights into the influence of manganese on the driving force and kinetics of bainite transformation. The study shows that increasing manganese content leads to a lower fraction of bainite formed during the isothermal stage and longer incubation and transformation time.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Nanoscience & Nanotechnology
Adam Skowronek, Erick Cordova-Tapia, Pilar Tobajas-Balsera, Carlos Garcia-Mateo, Jose A. Jimenez, Roumen Petrov, Adam Grajcar
Summary: The novel use of double austempering treatments in a multiphase steel has been studied to refine and homogenize the microstructure and improve material strength. The two-step heat treatments effectively reduced blocky-type austenite and fresh martensite while retaining a high volume fraction of retained austenite. The microstructural characteristics, including reduced bainitic plate thickness and film-like retained austenite, led to a significant increase in hardness (50 HV) and yield strength (180 MPa).
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Li Ma, Naiyou Xiao, Tao Jia, Jose A. Jimenez, Xiuhua Gao
Summary: The effect of processing route on the microstructure and tensile behavior of a V-microalloyed medium-Mn steel has been analyzed. The balance between different phases was found to be the most important factor affecting the strength and ductility of the steel. The presence of fresh martensite increased the strength of hot-rolled samples, while the presence of retained austenite improved the total elongation to failure of warm-rolled samples. The WRA sample showed optimal mechanical properties, with a yield strength of 808 MPa and an ultrahigh product of strength and elongation.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Article
Multidisciplinary Sciences
Adriana Eres-Castellanos, Ana Santana, David De-Castro, Jose Antonio Jimenez, Rosalia Rementeria, Carlos Capdevila, Francisca G. Caballero
Summary: This study investigates the properties of a 300 maraging steel processed under different conditions using LPBF. The results show that the heat treatment intrinsic to the LPBF process does not affect the texture and morphology of the prior austenite grains. The microstructure texture is not related to the powder layer thickness or the laser emission mode, but it could be affected by the laser power or the scan strategy.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
Adriana Eres-Castellanos, Ana Santana, Luis Miguel Sanz-Moral, Rosalia Rementeria, Rebeca Hernandez Pascual, Marta Serrano, Isaac Toda-Caraballo, Jose A. Jimenez, Francisca G. Caballero, Carlos Capdevila
Summary: This study evaluated the effects of adding TiC nanoparticles on the microstructure and high temperature behavior of Grade 316 L stainless steel. The results showed that TiC nanoparticle inoculation did not alter the solidification structure and grain size, but it did modify the material's texture. Additionally, dispersion hardening improved the ductility, yield strength, and ultimate tensile strength of 316 L steel at high temperature.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Ramon Cobo Rendon, Christopher Salvo, Erwin Sepulveda, Arunachalam Arulraj, Felipe Sanhueza, Jose Jimenez Rodriguez, Ramalinga Viswanathan Mangalaraja
Summary: A series of La0.6Sr0.4MnO3 (LSM) perovskite was synthesized using the rapid solution combustion method and calcined at different temperatures. The calcination temperature was found to affect the microstructural, morphological, compositional, optical, and electrical properties of the nanopowders produced. With increasing calcination temperature, the average grain size and hardness increased, while the apparent porosity and resistivity decreased. The optical characterization revealed specific absorption and bandwidth characteristics.
Article
Materials Science, Multidisciplinary
Adam Skowronek, Adam Grajcar, Carlos Garcia-Mateo, Jose A. Jimenez, Roumen H. Petrov
Summary: The present study explores the possibility of using continuous annealing approach in Al-alloyed 5Mn steel to optimize the superior mechanical properties in medium-Mn. The microstructural changes as a function of time were followed by dilatometric studies at 680 oC with different soaking times, and thoroughly characterized using various techniques. It was observed that with increasing soaking times, the volume fraction of retained austenite gradually increases, but at the cost of its stability. Mechanical tests results showed a decrease in yield stress, tensile strength and hardness with increasing intercritical annealing soaking time.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(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)