Article
Materials Science, Multidisciplinary
Jianyue Zhang, Guanyu Zhou, Bin Jiang, Alan Luo, Xuzhe Zhao, Aitao Tang, Fusheng Pan
Summary: The novel grain refinement method using a CaMgSn intermetallic phase was found to effectively reduce the average grain size in AZ31 magnesium alloy, improving microhardness and compressive yield strength. The added CaMgSn particles acted as heterogeneous nucleation sites in the grain interiors, contributing to the refinement of microstructure and mechanical properties of Mg-Al-based alloys.
Article
Nanoscience & Nanotechnology
Z. H. Li, T. T. Sasaki, A. Uedono, K. Hono
Summary: This study investigates the role of Zn in the rapid age-hardening process of magnesium alloys. The results show that the addition of Zn facilitates the formation of Ca-Zn co-clusters, which contributes to the rapid age-hardening.
SCRIPTA MATERIALIA
(2022)
Article
Chemistry, Physical
K. Korgiopoulos, A. Sadeghi, M. Pekguleryuz
Summary: This study investigates the effect of Yttrium on Mg17Al12, finding that low and high Y additions can respectively decrease and increase its lattice constant, leading to complex influences on its mechanical properties.
Article
Crystallography
Umer Masood Chaudry, Kotiba Hamad, Tea-Sung Jun
Summary: In this study, the microstructure, crystallographic texture, and mechanical performance of hot-rolled pure Mg and Mg-2Al-1Zn-1Ca alloys were thoroughly investigated. The designed Mg-2Al-1Zn-1Ca alloy showed an exceptional strength/ductility synergy with a nearly 40% increase in ductility compared to pure Mg. The grain refinement and dispersed precipitates in the Mg-2Al-1Zn-1Ca alloy resulted in a weakened texture, leading to the preferential evolution of non-basal grains and hindering the growth of basal grains.
Article
Materials Science, Multidisciplinary
Daisuke Egusa, Koji Inoue, Yasuyoshi Nagai, Eiji Abe
Summary: The study found that kink boundaries (KBs) undergo reconstruction during post-annealing, forming local hexagonal close-packed Mg regions and enhancing thermal stability. The reconstruction of dislocation structures plays an important role in solute-enriched face-centered cubic layers within LPSO structures.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
T. T. Sasaki, J. Y. Lin, P. Yi, Z. H. Li, S. E. Prameela, A. Park, E. Lipkin, A. Lee, M. L. Falk, T. P. Weihs, K. Hono
Summary: In this study, the deformation-induced precipitation of G.P. zones in Mg-9Al and Mg-5 Zn alloys during equal channel angular extrusion has been reported. Atom probe tomography and hybrid molecular dynamics/Monte Carlo simulations suggest that strategic control of atomic-scale defects can generate novel microstructures, thereby strengthening the deformed Mg alloys.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Chuanlong Xu, Lin Yuan, Haidong Fan
Summary: Molecular dynamics simulation was used to study the interaction between precipitate and {10 (1) over bar2} twin in Mg-Al alloy. The results showed that the introduction of precipitate had little effect on the formation of homogeneous and heterogeneous twins. During twin propagation, the blocking effect of precipitate depended on its size. When the length of precipitate was much larger than the thickness of twin, the twin tip was completely blocked with elastic bending occurring at the junction. During twin growth, the precipitate acted as an obstacle and a source for twinning dislocations gliding along the twin boundary. The influences of width and thickness on precipitation hardening were significantly greater than that of length.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Jae-Gil Jung, Amir R. Farkoosh, David N. Seidman
Summary: The precipitation behavior of two L1(2)-strengthened alloys with Mg and Y additions was studied. It was found that Si-added alloy forms beta-Mg2Si precipitates at around 200 degrees C, which act as nucleation sites for the L1(2)-nanoprecipitates and cause partial depletion of Si solute atoms, resulting in a microhardness peak at 475 degrees C. The Si-free alloy has superior creep properties due to a larger lattice parameter mismatch of the L1(2)-nanoprecipitates with the Al matrix provided by higher Sc/Er/Y concentrations. Both alloys exhibit slower L1(2) nanoprecipitation-kinetics and extremely high coarsening resistance.
Article
Metallurgy & Metallurgical Engineering
Yong-Kang Li, Min Zha, Hai-Long Jia, Si-Qing Wang, Hong-Min Zhang, Xiao Ma, Teng Tian, Pin-Kui Ma, Hui-Yuan Wang
Summary: By using hard plate rolling process, the volume fraction of fine grains in bimodal grain structure can be effectively tailored, resulting in optimized strength and ductility with a high ultimate tensile strength and decent uniform elongation. The desired bimodal grain structure can be achieved by co-regulating particle effects and inhibiting the growth of recrystallized grains.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Chemistry, Physical
Xinxin Dong, Bo Wei, Dominik Legut, Haijun Zhang, Ruifeng Zhang
Summary: Mg-Zn alloys are promising as biodegradable materials due to their excellent mechanical properties and biocompatibility, but their corrosion behavior poses challenges for biomedical applications. By constructing Pourbaix diagrams based on first principles, researchers found that different alloy compositions exhibit unique corrosion mechanisms, such as galvanic corrosion in Mg-rich alloys and Zn corrosion in Zn-rich alloys. The presence of Cl ions in the environment has also been shown to influence the corrosion behavior of the alloys, highlighting the importance of understanding the alloy's degradation mechanisms for future design improvements.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Zheng Jia, Yongzhi Yu, Bing Yu, Li Fu, Wenyi Hu, Yichuan Shao
Summary: This paper investigated the effect of Ca and Zr additions on the microstructure and mechanical properties of Mg-Sn alloys. It was found that Ca inhibited the dynamic recrystallization behavior of the alloys, while Zr promoted it. The addition of Ca and Zr elements refined the grain size and strengthened the second phase dispersion, leading to improved mechanical properties of the alloy.
Article
Chemistry, Physical
Fanglei Hu, Guomin Han, Baoqin Fu, Tang Shi, Xuefei Huang
Summary: An elastoplastic phase-field model was used to study stress-assisted diffusional phase transformation with plastic deformation. Different loading conditions were applied to a single crystal during precipitation to investigate the effects on elastoplastic deformation and phase transformation. Simulation results showed that plastic deformation may occur even below the materials' yield limits due to stress accumulation triggered by volume expansion and lattice mismatch. Plasticity played a significant role in the morphological evolution of the precipitate under axial and shear loading, with different shapes observed compared to no loading conditions. Plasticity had a dual role in promoting initial growth but later impeding it. These findings provide guidelines for designing precipitate microstructures for better mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Massoud Emamy, Hamed Mirzadeh, Mohammadbaqer Ra'ayatpour, Hooman Abedi
Summary: The microstructural development and mechanical properties of newly developed Mg-5Ni-xAl (x = 2.5, 5, and 7.5 wt%) alloys were investigated. The results showed that increasing the Al content and hot extrusion treatment significantly improved the mechanical properties, resulting in grain refinement and phase dispersion, leading to the best tensile properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Fanglei Hu, Guomin Han, Baoqin Fu, Tang Shi, Xuefei Huang
Summary: An elastoplastic phase-field model was developed to investigate diffusional transformations in Mg-Al-based alloys. The model considers plastic deformation and its effects on the morphology and growth kinetics of beta-Mg17Al12 precipitates. The modeling results show that plastic deformation has a dual effect on the growth of the precipitate, promoting it during the initial stage but retarding it afterward.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Zhen-Ming Hua, Cheng Wang, Tian-Shuai Wang, Chunfeng Du, Shen-Bao Jin, Gang Sha, Yipeng Gao, Hai -Long Jia, Min Zha, Hui -Yuan Wang
Summary: This study demonstrates that cyclic deformation of a Mg alloy at room temperature can significantly increase the yield strength while only slightly reducing the elongation to failure. The strength improvement is mainly attributed to the formation of high-density solute clusters. This work provides new insights into the strengthening mechanisms and has important implications for the development of Mg alloys with high strength-ductility synergy.
Article
Materials Science, Multidisciplinary
B. Langelier, S. Y. Persaud, R. C. Newman, G. A. Botton
Article
Materials Science, Multidisciplinary
B. Langelier, A. Korinek, P. Donnadieu, S. Esmaeili
MATERIALS CHARACTERIZATION
(2016)
Article
Materials Science, Multidisciplinary
S. Y. Persaud, J. M. Smith, B. Langelier, B. Capell, M. D. Wright
Article
Chemistry, Multidisciplinary
A. A. El-Zoka, B. Langelier, A. Korinek, G. A. Botton, R. C. Newman
Article
Nanoscience & Nanotechnology
Liting Shi, Kayla Baker, Ryan Young, Jidong Kang, Jie Liang, Babak Shalchi-Amirkhiz, Brian Langelier, Yves Brechet, Christopher Hutchinson, Hatem Zurob
Summary: Cyclic deformation of solution treated AA6061 results in a high number density of Mg/Si clusters, contributing to a strength comparable to T6 condition. Subsequent heat treatment further increases strength, with a shorter aging time needed compared to traditional treatments. The presence of clusters plays a crucial role in promoting a higher number density of precipitates during aging.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Esther Hutten, Shenglong Liang, Erika Bellhouse, Sujay Sarkar, Yaping Lu, Brian Langelier, Hatem S. Zurob
Summary: The mechanical properties and precipitation behavior of hot-rolled microalloyed steels with varied Nb and V additions were investigated. The steels exhibited a good combination of strength, ductility, and hole expansion ratio, with strength increasing with increasing Nb and V content. The favorable hole expansion behavior was attributed to fine ferrite grain size and uniformity of the microstructure, as well as the formation of fine precipitates of Nb and V carbonitrides.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
C. Dai, Q. Wang, P. Saidi, B. Langelier, C. D. Judge, M. R. Daymond, M. A. Mattucci
Summary: Irradiation-induced hardening and changes to mechanical properties can lead to material degradation and limit the operation of reactor components. Dislocation loops, stacking fault tetrahedra, and voids are observed defects in structural materials. The stability and nature of dislocation loops and SFTs with temperature are important for the mechanical properties of materials.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Review
Engineering, Biomedical
Kathryn Grandfield, Chiara Micheletti, Joseph Deering, Gabriel Arcuri, Tengteng Tang, Brian Langelier
Summary: Biominerals and biomaterials play important roles in our daily lives. Atom probe tomography (APT) is a promising three-dimensional characterization technique that can provide insights into the structures and compositions of biominerals and biomaterials at the nanoscale. APT has the potential to enhance our understanding of biomineralization mechanisms and inform biomaterial design.
ACTA BIOMATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
C. Dai, P. Saidi, B. Langelier, Q. Wang, C. D. Judge, M. R. Daymond, M. Mattucci
Summary: Radiation-induced segregation of alloying elements to crystallographic defects is commonly observed in irradiated austenitic stainless steels. The interaction between solutes and defects affects the physical distribution of solutes, which in turn affects the formation, growth, and mechanical properties of defects. Atom probe tomography and molecular dynamics simulations were used in this study to investigate the distribution of solutes and stress fields at dislocation loops in 304L stainless steel. The results show that at higher temperatures, enrichment and depletion of certain alloying elements occur at dislocation loops, while no segregation is observed at lower temperatures. The simulations reveal the formation of Cr clusters and the enrichment or depletion of Ni atoms at different types of dislocation loops.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
B. Langelier, S. Y. Persaud, A. Korinek, T. Casagrande, R. C. Newman, G. A. Botton
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)