Article
Materials Science, Multidisciplinary
C. Suryanarayana, Ahmed A. Al-Joubori, Zhi Wang
Summary: The technique of mechanical alloying has evolved from producing superalloys for aerospace to synthesizing a wide range of advanced materials, such as nanostructured materials and nanocomposites. This process involves repeated cold welding, fracturing, and rewelding of powder particles to enhance alloy formation. The resulting materials can include supersaturated solid solutions, intermetallics, quasicrystalline alloys, high-entropy alloys, amorphous alloys, and composites, with most having nanometer-sized grain structures.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Biochemistry & Molecular Biology
Alvaro Javier Gomez Rodriguez, Dagoberto Oyola Lozano, Humberto Bustos Rodriguez, Yebrail Rojas Martinez, German Antonio Perez Alcazar, Ligia Edith Zamora Alfonso, Juan Sebastian Trujillo Hernandez
Summary: The objective of this study is to evaluate the applicability of exchange coupling between nanoparticles of Nd2Fe14B and Fe90Al10 as permanent magnets produced by surfactant-assisted mechanical alloying. The results show a significant decrease in coercive force with temperature and percentage of soft phase during the sintering process.
Review
Materials Science, Ceramics
Armin Rajabi, Peter Hodgson, Mariyam J. Ghazali, Zainuddin Sajuri, Alireza Almaslow, Hamid Ahmad Mehrabi, Amir Hossein Baghdadi
Summary: This study reviews the development of titanium carbon nitride (TiCN) and compares different synthesis processes. It also highlights the drawbacks in nano-TiCN synthesis and suggests possible solutions.
CERAMICS INTERNATIONAL
(2022)
Article
Metallurgy & Metallurgical Engineering
Mustafa Tekin, Hasan Kotan
Summary: The motivation of this work is to increase the grain size stability of nanocrystalline CoCrFeNi high entropy alloys (HEA) with Y and Y2O3 additions. The results reveal that the addition of Y and Y2O3 can stabilize the grain size after annealing at high temperatures, leading to the retention of high hardness.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2022)
Article
Materials Science, Multidisciplinary
D. Garzon, J. E. Diosa, C. Ostos, F. H. Sanchez, G. A. Munoz Medina, F. Sieves, O. Arnache
Summary: (Fe30Cu70)(96)B-4 (FCB) alloys were prepared by mechanical milling and characterized for structural, morphological, and magnetic properties with increasing milling time. The nanoparticles formed after 12 hours of milling exhibit superparamagnetic-like behavior at temperatures below 60 K despite being ferromagnetic at room temperature. The saturation magnetization and coercive field values change with milling time.
MATERIALS CHARACTERIZATION
(2021)
Article
Biochemistry & Molecular Biology
Pardis Keikhosravani, Hossein Maleki-Ghaleh, Amir Kahaie Khosrowshahi, Mahdi Bodaghi, Ziba Dargahi, Majid Kavanlouei, Pooriya Khademi-Azandehi, Ali Fallah, Younes Beygi-Khosrowshahi, M. Hossein Siadati
Summary: The study biofunctionalized hydroxyapatite (HA) properties by doping it with lithium (Li) to enhance its bioactivity, and concluded that 1.0 wt.% Li doping was optimal for maximizing the bioactivity of HA. Furthermore, the experiment demonstrated that HA doped with Li exhibited enhanced antibacterial properties.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Maryam Hajipour, Hossein Raanaei, Saeid Zarei
Summary: This research investigated the structural, magnetic, and thermal properties of a cobalt-based alloy produced by mechanical alloying. The results showed that after milling, a solid solution with an iron-based structure was achieved, and both the crystallite size and coercivity increased.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Coatings & Films
Ming-Hong Lin, Fang-Yu Fan, Cheng Hsien Kuo, Liang-Wei Lin, Kuang-Kuo Wang, Chin-Fu Chen, Yan-Hsiung Wang, Shih-Fu Ou
Summary: In this study, a high-frequency ball-bombardment method called ultrasonic mechanical coating and armouring (UMCA) was used to synthesize a hydroxyapatite (HA)-containing coating on a NiTi SMA. The effects of treatment duration, Ti addition, and ball-to-powder ratio on the HA content of the coating were investigated. The results showed that a high HA content coating with good adhesion and corrosion resistance could be achieved under certain conditions.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Damien Bregiroux, Julie Cedelle
Summary: The study found that by controlling the sintering temperature during SPS, ZnS ceramics with small grain size and almost full density could be obtained, but higher temperatures could lead to grain growth, affecting mechanical properties. Keeping the grain size below 100 nm appears to be the key to developing high-performance ZnS functional ceramics.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Mustafa Tekin, Gokhan Polat, Hasan Kotan
Summary: Abnormal grain growth in Zr-doped nanocrystalline high entropy alloy was comprehensively investigated through annealing experiments and microscopy techniques. The incorporation of Zr elements can introduce larger grains and in-situ formed oxide phases in the fine-grained matrix, which enhances the strength-ductility combination of the high entropy alloy.
Article
Materials Science, Ceramics
Daegwon Ha, Jae-Hee Kim, Moonsu Seo
Summary: Mechanical alloying is a powerful method for fabricating advanced materials, and the new high energy ball milling technique, horizontal attrition ball milling, shows superior milling effects for producing ultrafine cermet powders with excellent mechanical properties for structural ceramics and composites.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Rana Ghannam, Adrien Moll, David Berardan, Loic Coulomb, Antonio Vieira -E-Silva, Benjamin Villeroy, Romain Viennois, Mickael Beaudhuin
Summary: This article reports the effect of nano-structuring and purity on the thermal and thermoelectric properties of alpha-SrSi2. The results show that nanostructured pellets with a grain size of about 200 nm can be obtained using ball milling and spark plasma sintering, which reduces the lattice contribution to the thermal conductivity. The figure of merit ZT is improved to 0.20 around room temperature after nano-structuring. The influence of Sr purity on the thermoelectric properties is also presented.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Mustafa Tekin, Gokhan Polat, Y. Eren Kalay, Hasan Kotan
Summary: Nanocrystalline CoCrFeNi high entropy alloys with 1 and 4 wt% nanosized Y2O3 were synthesized and annealed at different temperatures. The addition of Y2O3 nanoparticles improved the grain size stability and hardness of CoCrFeNi at high temperatures, showing potential for enhancing its mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Arun Raphel, P. Vivekanandhan, Appu Kumar Singh, S. Kumaran
Summary: The facile synthesis of nanocrystalline lead tin tellurium selenium high entropy alloy doped with bismuth through mechanical alloying and spark plasma sintering resulted in enhanced power factor and low thermal conductivity, leading to a significant improvement in figure of merit compared to the pristine alloy.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jing Zhou, Jianghe Feng, Hao Li, Duo Liu, Guojuan Qiu, Feng Qiu, Juan Li, Zhong-Zhen Luo, Zhigang Zou, Rong Sun, Ruiheng Liu
Summary: The carrier concentration in n-type Bi2Te3-based thermoelectric material is stabilized by high-energy refinement and hot-pressing, combined with SbI3 doping and hot deformation, resulting in optimized carrier concentration and high texture degree. The peak figure of merit (zT) of 1.14 is achieved for Bi2Te2.7Se0.3 + 0.05 wt.% SbI3 sample with a bending strength of 100 Mpa. Additionally, a thermoelectric cooling device consisting of n-type Bi2Te2.7Se0.3 + 0.05 wt.% SbI3 and commercial p-type Bi0.5Sb1.5Te3 legs generates a large maximum temperature difference (Delta T-max) of 85 K at a hot-side temperature of 343 K.
Article
Materials Science, Multidisciplinary
Hasan Kotan, Kris A. Darling, Tom Luckenbaugh
Summary: Recent studies have shown that consolidation methods involving high shear, pressure, and temperature can effectively bond high-strength particulate materials produced by mechanical alloying. Multi-pass high temperature equal channel angular extrusion has the ability to produce bulk ferritic alloys from nanocrystalline Fe-Ni-Zr powders, with average grain sizes remaining smaller than 100 nm after processing at 600 degrees C and 700 degrees C.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Gokhan Polat, Hasan Kotan
Summary: Stainless steels with different Fe/Cr/Ni ratios were produced by mechanical alloying at room and cryogenic temperatures. The effects of alloying temperature on martensitic transformation, the reversion of deformation-induced martensite, and cooling rate on thermal stability of reversed austenite were investigated. Results showed that low nickel-containing steel underwent nearly complete martensitic transformation, with partial transformation at cryogenic temperatures. Additionally, slower cooling rates increased thermal stability of reversed austenite.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Engineering, Chemical
Hasan Kotan, Gokhan Polat, A. Busra Yildiz
Summary: 304L stainless steels with Hf additions were nanostructured by mechanical alloying and annealed at temperatures up to 1100 degrees C. The addition of Hf increased the required time and temperature for phase transformation, resulting in smaller grain sizes and higher hardness values compared to base 304L stainless steel.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Engineering, Chemical
Gokhan Polat, I. Emre Canbolat, Aytekin Uzunoglu, Hasan Kotan
Summary: The study focused on the structural and property changes of Fe/MWCNT composites during high-energy ball milling, investigating the effects of factors such as milling time, MWCNT content, and annealing temperature. The results indicated that carbide formation played a significant role in strengthening the composites.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Materials Science, Characterization & Testing
Mehmei Emin Cetin, Gokhan Polat, Mustafa Tekin, Ahmet Burcin Batibay, Masan Kotan
Summary: A Ti-22Al-25Nb alloy with nanocrystalline structure was produced using high energy mechanical alloying (HEMA) and 1 at.-% yttrium as a thermal stabilizer. The results showed that annealing at 800 degrees C led to an increase in grain size and a decrease in hardness for the alloy. Yttrium addition helped maintain grain size stability and hardness after annealing at elevated temperatures.
Article
Chemistry, Physical
Mustafa Tekin, Gokhan Polat, Y. Eren Kalay, Hasan Kotan
Summary: Nanocrystalline CoCrFeNi high entropy alloys with 1 and 4 wt% nanosized Y2O3 were synthesized and annealed at different temperatures. The addition of Y2O3 nanoparticles improved the grain size stability and hardness of CoCrFeNi at high temperatures, showing potential for enhancing its mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Aytekin Uzunoglu, Hasan Kotan, Rumeysa Karaagac, Hasan H. Ipekci
Summary: N-doped, defect-rich activated carbons were prepared using high-energy ball milling and heat treatment, which showed significant improvements in the electrochemical performance.
APPLIED NANOSCIENCE
(2022)
Article
Metallurgy & Metallurgical Engineering
Mustafa Tekin, Hasan Kotan
Summary: The motivation of this work is to increase the grain size stability of nanocrystalline CoCrFeNi high entropy alloys (HEA) with Y and Y2O3 additions. The results reveal that the addition of Y and Y2O3 can stabilize the grain size after annealing at high temperatures, leading to the retention of high hardness.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2022)
Article
Chemistry, Physical
Gokhan Polat, Mustafa Tekin, Hasan Kotan
Summary: CoCrFeNi high entropy alloys have been nanostructured and annealed with yttrium additions. The study investigates the effects of solute addition and annealing temperature on the structure, grain growth, and hardness. The results show that yttrium additions can retard grain growth and enhance thermal stability.
Article
Chemistry, Physical
Mustafa Tekin, Gokhan Polat, Hasan Kotan
Summary: Abnormal grain growth in Zr-doped nanocrystalline high entropy alloy was comprehensively investigated through annealing experiments and microscopy techniques. The incorporation of Zr elements can introduce larger grains and in-situ formed oxide phases in the fine-grained matrix, which enhances the strength-ductility combination of the high entropy alloy.
Article
Materials Science, Multidisciplinary
Yusuf Furkan Yapan, Osman Ozturk, Mevlut Turkoz, Murat Dilmec, Haydar Livatyali, Huseyin Selcuk Halkaci, Hasan Kotan
Summary: This study aimed to improve the formability of Ti-6Al-4V sheet at room temperature by using pulsating hydraulic bulging and investigating the microstructural reasons for the enhanced formability. Monotonic and pulsating hydraulic bulge tests were performed on Ti-6Al-4V sheets, and detailed microstructural characterizations were conducted. The results showed that pulsating hydraulic bulging resulted in higher bulge dome height and more homogeneous thickness distribution compared to monotonic bulging. The increased formability was attributed to stress relaxation, decreased dislocation density, and increased plastic deformation.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Automation & Control Systems
Osman Ozturk, Habip G. Korkmaz, Gurkan Atas, Mevlut Aydin, Mevlut Turkoz, Serkan Toros, Murat Dilmec, Haydar Livatyali, Hasan Kotan, H. Selcuk Halkaci
Summary: Ti-6Al-4 V sheets have limited formability at room temperature due to low ductility and almost no strain hardening. Pulsating pressure during hydroforming significantly improves formability by allowing higher thickness reduction and more homogeneous thickness distribution. Pulsation delays material failure, resulting in an increase in dome height and burst pressure. Microstructural phenomena and stress relaxation contribute to the enhanced formability with pulsation.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Mustafa Tekin, Faiz Muhaffel, Hasan Kotan, Murat Baydogan
Summary: In this study, in-situ oxide dispersion strengthened (ODS) Fe91Ni8Zr1 and Fe88Ni8Zr4 alloys were produced by high energy mechanical alloying (HEMA) and high temperature equal channel angular extrusion (HT-ECAE). Wear behaviors of the alloys under different loads were investigated and compared, showing different wear rates and friction coefficients for each alloy. The results suggest potential applications of these alloys in wear applications such as cutting tools and turbine blades.
JOURNAL OF METALS MATERIALS AND MINERALS
(2023)
Article
Chemistry, Physical
Hasan Kotan, Mustafa Tekin, Aleyna Bayatli, Kuebra Gurcan Bayrak, Mustafa Kocabas, Erhan Ayas
Summary: The microstructural evolution, thermal stability, hardness, and corrosion behavior of Zr/Y doped CoCrFeNi HEAs prepared through high-energy mechanical alloying followed by spark plasma sintering (SPS) at 1100 degrees C were investigated. The results showed that the HEAs consist of an fcc solid solution of CoCrFeNi matrix with in-situ formed Cr-C carbides and Cr/Zr/Y based oxide phases. Zr and Y additions resulted in increased hardness due to the precipitation strengthening of carbide and oxide phases as well as smaller grain sizes. While the corrosion resistance was slightly impaired by the presence of different oxide types and smaller grain sizes, the investigated HEAs still showed reasonable corrosion resistance compared to SS304 stainless steel.
Article
Materials Science, Characterization & Testing
Mustafa Tekin, Faiz Muhaffel, Hasan Kotan, Murat Baydogan
Summary: This study investigates the creep behavior of two oxide dispersion strengthened alloys with Zr alloying addition through indentation creep tests at room temperature. The Fe-8Ni-xZr (x = 1 and 4 at.%, i.e., Zr-1 and Zr-4 alloys) alloys, fabricated by mechanical alloying and consolidation via equal channel angular extrusion, were used in the tests conducted under different loading rates. The results show that the Zr-4 alloy is harder but has lower creep resistance compared to the Zr-1 alloy. Both hardness and creep resistance are affected by the loading rate. Additionally, a possible creep mechanism is proposed. This study provides insights into the effect of microstructure on creep in oxide dispersion strengthened alloys at elevated temperatures.
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)
