Article
Materials Science, Multidisciplinary
Na Yan, Delu Geng, Bingbo Wei
Summary: The influence of cooling rate on the damping performance and martensitic transformation mechanism of Fe-17%Mn alloy was investigated. It was found that rapid solidification was beneficial for the formation of ε-martensite and the improvement of damping capacity.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Soban Muddassir Dar, Hengcheng Liao, Aiqun Xu
Summary: This study found that Fe plays a key role in stabilizing the I-phase in conventionally cast Al-Cu-Mn alloys, but does not participate in its transformation to the D-phase and T-Al20Cu2Mn3 phase.
Article
Materials Science, Multidisciplinary
Wenhao Pan, Huabei Peng, Yangyang Du, Jie Chen, Jiazhen Yan, Yuhua Wen
Summary: This study investigated the microstructures and shape memory effect (SME) of cast Fe-Mn-Si-CrNi alloys with four solidification modes. Ferritic-austenitic and ferritic modes introduced more stacking faults, reducing stress-induced critical martensite stress. Thus, the former solidification modes displayed better SME than the latter solidification modes.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Meng Sun, Lan Li, Weibin Jiang, Yunxia Gao, Hui Wang, Xianping Wang, Qianfeng Fang
Summary: By studying the internal friction phenomena in Fe-(0-30) at% Ga alloys, it was found that the HDP decreases with increasing Ga content, disappearing when the Ga content is greater than 18 at%. In long-term annealed Fe-30at%Ga alloy, a frequency-independent phase transition IF peak was observed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Gurumayum Robert Kenedy, Yi-Jyun Lin, Wei-Chun Cheng
Summary: The study discovered the mechanism of martensitic transformation in Fe-Mn-Al steel, which is different from traditional mechanisms but similar to that in maraging steel. After high-temperature cooling, slight strain energy combined with a small temperature gradient can result in the formation of ferritic lath martensite.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Isai Galindo Aguilar, Jesus Torres Torres, Alfredo Flores Valdes, Alfredo Alan Flores Saldivar
Summary: The present study investigates the effects of temperature and homogenization time on the microstructures and morphologies of intermetallic phases in the 6063 alloy. The results show that increasing temperature and homogenization time leads to a higher percentage of the alpha phase. The kinetic analysis reveals a two-stage transformation process from the beta phase to the alpha phase.
Article
Chemistry, Physical
Lin Zhang, Xindong Yan, Ying Shu, Hongjuan Yang, Xiaomin Kang, Zhenbing Cai, Minhao Zhu
Summary: This paper investigates the tribological properties of Mn-Cu and Fe-Zn damping alloys with laser textured surfaces under dry-sliding conditions. The results reveal that the surface weave parameters influence the contact surface size and the number of micro-convex bodies at the contact interface. This affects the tangential damping and friction coefficient, and the damping properties also significantly impact the wear mechanism, making it more prone to adhesive wear.
Article
Chemistry, Physical
L. Del-Rio, M. L. No, A. Sota, I. Perez-Casero, J. F. Gomez-Cortes, M. Perez-Cerrato, A. Veiga, I. Ruiz-Larrea, S. Ausejo, N. Burgos, J. M. San Juan
Summary: This study investigates the reversible gamma-epsilon martensitic transformation in Fe-Mn-Si-Cr-Ni alloys and its influence through additive manufacturing. The results show that the additive manufactured samples are more stable than the conventionally processed samples during cycling.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
T. N. Vershinina, I. A. Bobrikov, S. Sumnikov, A. M. Balagurov, A. K. Mohamed, I. S. Golovin
Summary: The evolution of structural phases of Fe-38.4 at%Ga alloy was studied through neutron diffraction experiments, revealing phase transitions at specific temperatures and the dependency of transition temperatures on the alloy's prehistory.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Zhitong Xu, Yao Liu, Xianglong Zhou, Tianyu Ma
Summary: This study investigates the effect of boron doping on the magnetostructural transition and magnetocaloric effect of the Mn0.89Fe0.11NiGe alloy, demonstrating that appropriate doping can enhance the magnetic entropy change, while excessive doping may reduce the phase transition temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Yi Xu, Wangwen Xiong, Tao Luo, Ruirui Liu, Siyi He, Xinghua Zhu, Shunping Li, Zhaohua Huang, Zhihai Liao
Summary: This paper investigates the preparation and properties of a novel high-entropy damping alloy. The experimental results show that the alloy exhibits excellent damping performance, which is related to the twin interface, magnetic properties, and phase interface. By adjusting the composition of the alloy, multiple damping mechanisms can be coupled to further enhance the damping performance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Thermodynamics
Alexander Walnsch, Andreas Leineweber, Mario J. Kriegel
Summary: Binary systems Fe-Mn, Fe-Ti and Mn-Ti are important in the development of structural and functional materials. Phase equilibria calculations are crucial for reliable alloy development. Advanced sublattice models were applied to derive thermodynamic descriptions and heat-capacity measurements were conducted to support the modeling. Reliable thermodynamic data and advanced models enable calculations from 0 K to melting point of the alloys.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
K. W. Park, E. Choi, W. J. Kim
Summary: This study systematically examines the effect of grain size on the shape memory properties of Fe-Mn-Si based alloys. It reveals that both the recovery strain and recovery stress are influenced by the grain size, with a linear relationship observed between recovery strain and log d (d: grain size). The densities of grain boundaries and annealing twin boundaries are also found to be related to the recovery strain. Additionally, the recovery stress behavior during heating and cooling varies depending on the grain size range.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
M. Takhsha Ghahfarokhi, F. Casoli, C. Minnert, S. Bruns, E. Bruder, R. Cabassi, K. Durst, O. Gutfleisch, F. Albertini
Summary: Nanoindentation was applied to study the effect of localized plastic deformation on the martensitic transformation of epitaxial Ni-Mn-Ga films on a MgO substrate. The cooling and heating curves for the nanoindented areas were analyzed, showing a thermodynamically governed local increase of the martensitic transformation temperature as a function of applied loads. The observed effect is local and disappears beyond a certain distance from the pile-ups around the residual impressions.
Article
Chemistry, Physical
Junyi Xiong, Lin Song, Xiang Guo, Xu Liu, Wen Zhang, Tiebang Zhang
Summary: In this paper, the inhibiting effect of Mn and Cr elements on the precipitation of omega o phase in beta-solidified gamma-TiAl alloys is investigated. The results show that both Mn and Cr have an inhibiting effect on the omega o phase precipitation, with a more obvious effect in the alloy with Mn addition. The addition of alloying elements lowers the phase transformation temperature of omega o phase, making it difficult to precipitate at intermediate 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)