Article
Materials Science, Multidisciplinary
Yuxiao Qiu, Rongying Liu, Linchi Zou, Haitao Chi, Chen Wang, Binshu Wang, Junfeng Chen
Summary: The study demonstrates that grain boundary precipitation affects intergranular corrosion behavior, with the magnesium, zinc, and copper content in GBPs influencing the potential difference and corrosion cavity formation. Continuous precipitates aid in the expansion of corrosion cracks, while discontinuous precipitates and precipitation free zones inhibit cavity propagation.
Article
Materials Science, Multidisciplinary
M. C. Niu, C. J. Chen, W. Li, K. Yang, J. H. Luan, W. Wang, Z. B. Jiao
Summary: Understanding the solute interaction effects on grain boundary segregation, precipitation, and fracture of Fe-Ni-Ti-(Mo) maraging steels is crucial for the development of improved steel performance. The addition of Mo effectively suppresses intergranular embrittlement by reducing the segregation of Ni and Ti, inhibiting the formation of coarse Ni3Ti precipitates and precipitate-free zones at grain boundaries, and enhancing grain boundary cohesion.
Article
Chemistry, Physical
Xinxin Zhang, You Lv, Teruo Hashimoto, Jan-Olov Nilsson, Xiaorong Zhou
Summary: In this study, the influence of trace level Cu on intergranular corrosion in AA6082 alloy was investigated using accelerated corrosion testing and high resolution electron microscopy. It was found that Al2Cu precipitates promoted IGC at the grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yuxiu Zhang, Yibing Li, Qinghuan Huo
Summary: This study investigated the effects of grain size on the compressive creep behavior of a Mg-10.5 wt%Y alloy. It was found that the decrease in grain size led to a deterioration in creep resistance. Different creep mechanisms were observed in samples with different grain sizes, and precipitate-free zones were observed on grain boundaries. The fine-grained samples exhibited poor creep resistance, even without grain boundary sliding.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Materials Science, Multidisciplinary
Xuebing Liu, Di Zhang, Hui Wang, Yu Yan, Xinfang Zhang
Summary: In this study, a novel manipulation pathway using pulsed electric field (PEC) was explored to control grain boundary structure and improve corrosion resistance in age-hardening aluminum alloys. The calculated atomic diffusion results showed that PEC can stimulate atomic diffusion by decreasing the energy required, inhibiting the formation of continuous distribution of grain boundary precipitates and solute depletion zone. This significantly enhanced the corrosion resistance.
Article
Nanoscience & Nanotechnology
Andrew Peterson, Ian Baker
Summary: The mechanisms of formation and growth of L12 precipitate-free zones in Fe-20Cr-30Ni-2Nb-5Al austenitic stainless steel during creep were studied. PFZs are formed after the dissolution of L12 precipitates due to depletion of nickel and aluminum, and little growth occurs until grain boundaries are covered by Laves phase and B2 precipitates leading to the depletion of surrounding elements. The presence of micro-cracks in PFZs suggests their weakness in the microstructure and their role as initiation points for fracture.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Zhiping Wang, Hongyu Xiao, Wei Chen, Yugang Li, Jiwei Geng, Keneng Li, Peikang Xia, Mingliang Wang, Xianfeng Li, Dong Chen, Haowei Wang
Summary: The dependence of grain boundary structure on precipitation at grain boundaries (GBs) in a TiB2/Al-Zn-Mg-Cu composite has been systematically investigated. It was found that the average size and coverage of grain boundary precipitates (GBPs) increase while the number density decreases with the increasing misorientation of low angle GBs (LAGBs). For high angle GBs (HAGBs), the coincidence site lattice (CSL) GBs and TiB2 particles have an effect on GBPs. The results indicate that TiB2 particles promote the nucleation of GBPs while limiting their growth.
MATERIALS CHARACTERIZATION
(2023)
Article
Metallurgy & Metallurgical Engineering
Y. J. Wan, Y. Zeng, Y. C. Dou, D. C. Hu, X. Y. Qian, Q. Zeng, K. X. Sun, G. F. Quan
Summary: This study investigated the effect of aging prior to twinning deformation on the precipitate orientation in AZ31 Mg alloy. The results demonstrated that the presence of prismatic plates led to significant improvements in compressive yield strength and compression ratio. Analysis using a yield strengthen model revealed that the enhanced CYS was primarily attributed to the altered precipitate orientation and refined grain size, with prismatic plates exhibiting a stronger hardening effect on basal slip.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
J. Y. Huang, W. Q. Ming, C. L. Wu
Summary: The corrosion behavior and its relationship with microstructure of two Al-Cu-Li alloys with different Cu/Li ratio were investigated. The results showed that the distribution of precipitates at grain boundaries and within grains played a key role in the corrosion resistance of the alloys.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Zhifu Zhao, Babak Safaei, Yanfei Wang, Fulei Chu, Yueguang Wei
Summary: This study investigated grain boundary elimination in two special bcc iron bicrystals through molecular dynamics simulations. The results showed that the elimination of grain boundaries enhanced resistance to intergranular fracture and led to directional anisotropy of intergranular crack propagation. The mechanisms of grain boundary elimination were revealed to be twinning and dislocation activities. This research provides valuable insights for grain boundary design.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Wenfeng Mo, Chenglu Tang, Pan Deng, Zuoqiong Ouyang, Binghui Luo, Zhenhai Bai
Summary: The effect of trace Zn addition on the microstructure and corrosion behavior of AA2024 under different aging treatments was investigated. The corrosion depth decreases with trace Zn addition at natural aging condition but increases at artificial aging treatment. The corrosion morphology of Zn-containing alloy differs from that of Zn-free alloy, and the dealloying process of the S phase in Zn-containing alloy is slower, which hinders the formation of pitting corrosion. Moreover, Zn addition promotes the nucleation of intragranular Guinier-Preston-Bagaryatski zones and accelerates the coarsening of S phases at over aging condition.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Jia-fei Deng, Jing Tian, Yancai Zhou, Yuanying Chang, Wei Liang, Jinyao Ma
Summary: In this study, a rolled rare earth magnesium alloy thin sheet was successfully prepared, and the plastic deformation mechanism and hardening mechanism were explored. The shape of the precipitates and the competition between local strain and macroscopic strain were found to affect the plastic deformation behavior of the alloy.
MATERIALS & DESIGN
(2022)
Article
Chemistry, Physical
Yanlin Pan, Di Zhang, Haoran Liu, Linzhong Zhuang, Jishan Zhang
Summary: The research found that by increasing the zinc and copper content in Al-Mg-Zn(-Cu) alloys, the strength and corrosion resistance of the alloy can be improved. The density and lattice spacing of intragranular precipitates increase while precipitate sizes decrease, resulting in increased strength. Additionally, enhancing the intergranular corrosion resistance can be achieved by reducing the potential between grain boundary precipitates and the Al matrix.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
S. W. Wu, T. Yang, B. X. Cao, J. H. Luan, Y. F. Jia, L. Xu, Y. K. Mu, T. L. Zhang, H. J. Kong, X. Tong, J. C. Peng, G. Wang, Q. J. Zhai, J. Lu, C. T. Liu
Summary: A novel precipitation-strengthened multicomponent high-entropy alloy was designed with optimized grain boundaries, showing a transition from brittleness to ductility and significantly improving both strength and ductility of the material.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Xingyu Feng, Jiayu Xie, Mingzheng Huang, Wenjun Kuang
Summary: This study investigated the preferential intergranular oxidation (PIO) behavior of low-angle grain boundaries (LAGBs) in alloy 600 exposed to simulated pressurized water reactor primary water. The results showed that all LAGBs were susceptible to PIO. Below a misorientation angle of 8.8 degrees, diffusion-induced grain boundary migration (DIGM) did not occur, resulting in slightly varied PIO depths among LAGBs. However, as the misorientation angle increased above 8.8 degrees, chromium (Cr) began to diffuse outward and DIGM took place, leading to a positive correlation between PIO and DIGM depths. Additionally, the PIO depth was not related to the misorientation angle, but instead exhibited an inverse relationship with the atom packing density of grain boundary planes.
Article
Materials Science, Multidisciplinary
Shao-Wen Young, Mitsutaka Sato, Kazuhiro Yamamitsu, Yusuke Shimada, Yongjie Zhang, Goro Miyamoto, Tadashi Furuhara
Summary: The study showed that the addition of Mn, Cr, and Mo can enhance the resistance to temper softening in Fe-N martensite, with Cr and Mo alloys experiencing secondary hardening at higher tempering temperatures. The formation mechanisms of different alloy nitrides were identified through various microstructural observations and chemical analyses.
Article
Nanoscience & Nanotechnology
R. Naseri, G. Casillas, D. R. G. Mitchell, D. G. Savvakin, M. Ahmed, T. Furuhara, E. V. Pereloma
Summary: The study investigated the effect of strain during uniaxial compression on the mechanical behavior of Ti-10V-2Fe-3Al alloy with a metastable beta matrix. Various deformation mechanisms such as slip, martensitic transformation, twinning, and formation of omega(D) were observed at different stages of plastic deformation. The presence of stable beta matrix influenced the formation of deformation-induced nanoscale omega(D) at the interface between alpha '' martensite and beta phase.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Naoya Kamikawa, Toyohisa Hirooka, Tadashi Furuhara
Summary: The study on ultrafine-grained Al-Mg binary alloys found that with the increase of Mg content, the Luders elongation in discontinuous yielding weakens, indicating that enhancing work hardening ability by adding solute atoms can effectively avoid unwanted discontinuous yielding in ultrafine-grained metals.
MATERIALS SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Xianguang Zhang, Goro Miyamoto, Yuki Toji, Yongjie Zhang, Tadashi Furuhara
Summary: The effects of cementite (theta) and retained austenite (RA) on the kinetics and microstructure evolution in austenite reversion have been studied in an Fe-2Mn-1.5Si-0.3C alloy. The results indicate that pre-tempering or prolonged austempering enhance the formation of globular gamma, while the presence of RA in short time austempered bainite structure suppresses it. High-temperature pre-tempering or prolonged austempering delays reversion kinetics, while low-temperature pre-tempering or the presence of RA have minimal effects on kinetics.
Article
Materials Science, Multidisciplinary
Daixiu Wei, Liqiang Wang, Yongjie Zhang, Wu Gong, Tomohito Tsuru, Ivan Lobzenko, Jing Jiang, Stefanus Harjo, Takuro Kawasaki, Jae Wung Bae, Wenjun Lu, Zhen Lu, Yuichiro Hayasaka, Takanori Kiguchi, Norihiko L. Okamoto, Tetsu Ichitsubo, Hyoung Seop Kim, Tadashi Furuhara, Evan Ma, Hidemi Kato
Summary: Recently-developed high-entropy alloys (HEAs) have expanded the compositional space and mechanical properties by substituting the constituent metals with metalloids. Metalloid substitution increases strength by increasing local lattice distortion and short-range chemical inhomogeneities, while reducing stacking fault energy to discourage dynamic recovery.
Article
Materials Science, Multidisciplinary
Fei Sun, Goro Miyamoto, Yikun Liu, Yuichiro Hayasaka, Tadashi Furuhara
Summary: This study investigates the phase separation and ordering phenomena during aging of Fe-35Ni-35Mn medium-entropy alloy using advanced characterization techniques. The results reveal that phase separation is induced by Mn clustering in the early stage of aging. A statistical thermodynamic model suggests that nucleation of the L1(0) phase should precede phase separation at 500 degrees C, while phase separation is possible in a disordered state at 400 degrees C and ordering further enhances it.
Article
Metallurgy & Metallurgical Engineering
Masato Yuya, Goro Miyamoto, Tadashi Furuhara
Summary: This study investigates the effect of dislocation on the precipitation behavior of nitrides in Fe-Mn and Fe-Cr binary alloys. The results show that deformation has little effect on the hardness and CrN precipitation behavior in Fe-Cr alloy, while it contributes to an increase in hardness and denser Mn3N2 precipitation in Fe-Mn alloy. The precipitation of CrN mainly occurs through homogeneous nucleation, while Mn3N2 precipitates mainly on dislocations.
ISIJ INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Y. Bagheri, H. Kamali, E. Kamali, S. Hossein Nedjad
Summary: Quenched and tempered Fe-9Ni steels are commonly used in cryogenic applications. This study reports the formation of nodular bainite in Fe-9.10Ni-0.06C steel during isothermal transformation, revealing the process of proeutectoid ferrite formation, cementite precipitation, and the influence of cementite size on microhardness.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Fanhui Meng, Goro Miyamoto, Yoshikazu Todaka, Tadashi Furuhara
Summary: Deformation was found to have different effects on the hardness of nitriding diffusion zone in pure iron and Fe-M (M = Al, Cr) alloys, with a significant increase observed in Fe-1Al alloy due to more extensive precipitation of AlN. Additionally, deformation resulted in more homogeneous growth of the compound layer with finer grain size of gamma' on the compound layer, especially evident in Fe-1Al alloy.
MATERIALS TRANSACTIONS
(2022)
Article
Nanoscience & Nanotechnology
Yongjie Zhang, Goro Miyamoto, Tadashi Furuhara
Summary: The interphase precipitation behaviors and hardening effects in V-microalloyed low carbon steels with Nb or Ti addition were investigated. It was found that the multiple-added alloys exhibit advantages in terms of alloy carbide density, size, and ferrite hardness.
SCRIPTA MATERIALIA
(2022)
Article
Nanoscience & Nanotechnology
Yulin Xie, Goro Miyamoto, Tadashi Furuhara
Summary: This study investigated the nanostructure of low temperature nitrided austenitic stainless steel using TEM and 3DAP techniques, and found the presence of Cr-N clusters in TN, which contributed to its high hardness.
SCRIPTA MATERIALIA
(2022)
Review
Materials Science, Multidisciplinary
Syamak Hossein Nedjad, Mehmet Yildiz, Abdollah Saboori
Summary: This article reviews the effects of cooling rate on the solidification behavior of austenitic stainless steels during high energy density welding and directed energy deposition (DED). Previous studies have shown that the austenite-ferrite duplex region is confined and specific alloy compositions on the Schaeffler diagram are susceptible to changes in solidification mode at high cooling rates during high energy density welding. Meanwhile, the DED process is dominated by mitigated cooling conditions. Instances of microstructural fluctuations due to cooling rate variation have been compiled. The incorporation of DED steels into the Schaeffler diagrams demonstrated reliable predictions at high cooling rates. The printability of austenitic stainless steels during the DED process has been discussed in relation to solidification cracking susceptibility.
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
(2023)
Article
Nanoscience & Nanotechnology
Haokai Dong, Yongjie Zhang, Goro Miyamoto, Masahiro Inomoto, Weiwen Zhang, Lehua Liu, Hao Chen, Tadashi Furuhara
Summary: This study investigates the segregation behaviors of niobium at the migrating ferrite/austenite interface with ledge structure. It is found that, for the incoherent interface, niobium atoms segregate at the less mobile terrace. The experimental measurements are well explained by theoretical calculations based on solute drag theory.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
Tadashi Furuhara, Yongjie Zhang, Mitsutaka Sato, Goro Miyamoto, Masanori Enoki, Hiroshi Ohtani, Tokuteru Uesugi, Hiroshi Numakura
Summary: This research reveals the method of controlling nanoscale dispersion of alloy carbides/nitrides in high-strength steels and emphasizes the importance of interstitial sublattice engineering for the strengthening of alloyed steels.
SCRIPTA MATERIALIA
(2023)
Article
Metallurgy & Metallurgical Engineering
Hidenori Nako, Goro Miyamoto, Yongjie Zhang, Tadashi Furuhara
Summary: In this study, the authors investigated the influence of acicular ferrite (AF) formation on the toughness of low carbon steel. They found that the TRZ steel, which contained Ti, rare-earth metal and Zr particles, showed better toughness compared to the AL steel. AF formation in the TRZ steel resulted in a refinement of the Bain unit size and a reduction in the amount of elongated martensite-austenite (MA) constituent, leading to improved toughness.
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN
(2022)
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)
