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Article
Materials Science, Multidisciplinary
Y. Z. Tian et al.
Summary: In this study, nanostructured Cu-10Fe composites were prepared by heavy cold rolling, and the microstructure evolution and properties of the composites during aging were systematically studied. It was found that the strength and ductility of the composites changed monotonically with increasing aging temperature, while the electrical conductivity initially increased and then decreased. The mechanisms for the superior mechanical and electrical properties were discussed by quantifying the contributions of different microstructural constituents.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Zhao Cheng et al.
Summary: This study aims to reveal the distribution of plastic strain gradients in gradient nanotwinned copper (GNT Cu). Full-field strain mapping reveals the gradient distributions of lateral strains in GNT Cu samples undergoing uniaxial tensile deformation. The results show that with an increasing structural gradient, the lateral strain gradient increases while the maximum lateral strain difference decreases. This gradient distribution of local extra strengths is due to the combined effects of plastic strain gradient and grain size.
Article
Engineering, Mechanical
Wei Liu et al.
Summary: Understanding the dynamic precipitation of LPSO phase and its effect on dynamic recrystallization in Mg-based alloys can provide insights for the manufacturing of high-performance alloys. This study found that the increase of Y and Zn atoms promotes the dynamic precipitation of 14H-LPSO phase in non-DRX and DRX grains respectively during hot extrusion.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Nanoscience & Nanotechnology
Y. Z. Tian et al.
Summary: In this study, Cu-10Fe composite was prepared by powder rolling strategy and cold rolling for further investigation of its composition distribution, microstructure evolution, electrical property and mechanical property. The results showed that the mutual diffusion of Cu and Fe elements during the powder rolling process was well controlled, which maintained the good electrical conductivity of the Cu matrix. The homogeneous distribution of Fe particles in the Cu matrix eliminated the Fe macrosegregation phenomenon during casting. The Cu-10Fe composite exhibited a tensile strength of 507 MPa and electrical conductivity of 80.1% IACS. The strengthening mechanisms and origins of exceptional electrical properties were discussed.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Ruoxu Liu et al.
Summary: Gradient structure (GS) is beneficial for metal materials to obtain excellent comprehensive properties of strength and toughness. However, there are still problems that need to be solved concerning the controllable preparation of GS and optimization of its mechanical properties, as well as the systematic and quantitative research on the strengthening mechanism of GS.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Bo Guan et al.
Summary: In this paper, a composite gradient-structured Cu-10 wt.%Fe plate was prepared using the ultrasonic surface rolling process (USRP), and the microstructure evolution, mechanical properties, and corrosion behavior were investigated. The results show that USRP effectively improves the strength and corrosion resistance of the Cu-10Fe alloy. The enhanced strength is attributed to the combined effects of Hall-Petch strengthening, dislocation strengthening, and additional strengthening resulting from homogeneous deformation between the surface layer and the matrix. The improved corrosion resistance is mainly due to the refined microstructure of the surface layer after USRP, which facilitates the formation of a protective passivation film.
Article
Engineering, Mechanical
Bo Guan et al.
Summary: This study reports the grain boundary strengthening relationship and orientation dependence of pure titanium. A new mechanism is proposed to explain the orientation effect on grain boundary strengthening. This effect is mainly caused by orientation-mediated deformation transfer.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Nanoscience & Nanotechnology
Weijiang Liu et al.
Summary: By using thermo-mechanical treatment, a heterogeneous structure was obtained in Cu-3.2Ti0.2Fe-0.2V alloy, which synergistically improved the strength and ductility of the copper alloy. Aging at different temperatures resulted in higher tensile strength and elongation in the heterogeneous-structured alloy compared to the coarse-grained alloy, with even better strengthening effect after cold rolling.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Rongjian Shi et al.
Summary: In this study, a gradient nanostructured bronze alloy with pre-nanoprecipitates was fabricated using a surface mechanical attrition treatment technique. Atomic-scale investigations revealed the microstructural evolution governing the gradient refinement process and the synergetic strengthening effects of gradient nanotwins and nanoprecipitates on mechanical properties.
Article
Nanoscience & Nanotechnology
Jing Xu et al.
Summary: Dual-phase Mg-Li alloys with different rolling paths were studied to investigate the effect of rolling path on microstructure, texture and mechanical anisotropy. The lamellar alpha+beta structures remained after ED-rolling and subsequent annealing, while disappeared after TD-rolling. The texture of beta phase was hardly affected by the rolling path. Annealing only reduced the maximum intensity of texture without changing the type of texture. VPSC simulations revealed that the activated deformation modes and alpha/beta phase boundaries played important roles in texture evolution. There was an obvious mechanical anisotropy after ED-rolling, which disappeared after TD-rolling.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Lang Ren et al.
Summary: The study found that the addition of Zr can refine the grain structure and improve mechanical properties in Cu-Fe alloys. This is because Zr forms ZrFe2 compound as nucleation substrate during solidification and additional precipitation of Cu4Zr and ZrFe2 occurs during aging process.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Yi Yang et al.
Summary: Two types of heterogeneous structures were prepared by controlling different surface mechanical attrition treatment (SMAT) time, and their effects on stress and mechanical properties were systematically investigated. The results showed that Cu materials with bimodal grain size structure (BGSS) and gradient structure (GS) suppressed strain localization, leading to increased strength and ductility.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Nanoscience & Nanotechnology
Zhi Zhang et al.
Summary: This study investigates the formability issue of magnesium alloys at room temperature. By introducing a heterogeneous-grained structure, the researchers were able to improve the ductility and strain hardening capacity of magnesium alloys.
SCRIPTA MATERIALIA
(2022)
Article
Nanoscience & Nanotechnology
Y. D. Wang et al.
Summary: Proper under-aging pre-treatment before rolling in Cu-Cr-Zr alloys helps to achieve better mechanical properties, significantly increasing the ultimate tensile strength. In addition, avoiding re-dissolution and refinement of precipitates can reduce the abnormal decrease in electrical conductivity.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Qiang Liu et al.
Summary: Low-alloying and low-cost magnesium alloy sheets have the potential for large-scale application. In this study, the edge cracking behaviors of different alloy sheets were investigated after large strain rolling. It was found that MA10 alloy sheets exhibited the most severe edge cracking behavior, mainly due to lower recrystallization degree, ultimate compressive strength, and higher strain localization during plastic deformation. Coarser second phase particles and larger grain size difference at the edge also promoted the initiation and propagation of edge cracks in MA10 alloy rolled sheets.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Mechanical
Aman Gupta et al.
Summary: This study investigates the evolution of microstructural and crystallographic texture in electrolytic tough-pitch copper, subjected to room-temperature-rolled and cryogenic-rolled processes. The severely deformed specimens showed deformed and recrystallized grains, with static recrystallization observed at room temperature. The nucleation of small grains was attributed to discontinuous and continuous static recrystallization, as well as particle-stimulated nucleation around Cu2O particles. The texture intensity of the specimens was influenced by deformation and static recrystallization phenomena. The cryogenic-rolled specimens exhibited stronger texture compared to room-temperature-rolled specimens at intermediate reductions, while the latter showed stronger texture intensity at higher deformation. The hardness values of the cryogenic-rolled specimens were relatively higher than those of the room-temperature-rolled specimens, and the time-dependent decay in hardness values was attributed to room-temperature recovery and recrystallization.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Nanoscience & Nanotechnology
Meng Wang et al.
Summary: The study produced Cu-Fe alloy sheet using a process of double-melt mixed casting followed by cold rolling, resulting in significant reduction in thickness and remarkable enhancement in mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
P. -C. Zhao et al.
Summary: The post-dynamic recrystallization behavior of ultrafine-grained cp-Ti was investigated under different temperatures and deformation rates. Recrystallization and grain growth were confirmed to occur due to annealing and fatigue at room temperature. The fatigue-induced grain growth was found to be intriguing, with noticeable misorientation aggregation and increased grain size observed.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Bo Guan et al.
Summary: The influence of strain rate on strain hardening behavior of CrCoNi medium-entropy alloy (MEA) was investigated, showing that flow stress and peak stress decrease with decreasing strain rate and increasing temperature. The strain rate sensitivity factor increases with deformation temperature, and a strong dependence of strain hardening behavior on strain rate was observed at high temperatures. The microstructural characterization revealed different effects of strain rate on samples deformed at different temperatures, with recrystallized grains decreasing with increasing strain rate at higher temperatures. It was also observed that recrystallized grains only formed at high strain rates for samples deformed at lower temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Jing Li et al.
Summary: The study revealed that the microscopic deformation behavior of Mg-Li-Gd dual-phase alloys is influenced by phase morphology, with different Li contents leading to varying strain accommodation capabilities. The Mg-8Li-2Gd alloy with small α-Mg phases distributed homogeneously was observed to trigger a large amount of deformation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Dawei Yuan et al.
Summary: The addition of Mg significantly improved the mechanical properties of the Cu-6.5Fe alloy while slightly reducing its conductivity. Observations and testing of the Cu-6.5Fe-0.3Mg alloy showed that the addition of Mg refined the Fe phase, inhibited dendrite segregation, promoted precipitation of the Fe phase, and effectively inhibited recrystallization of the Cu matrix.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
Chenzeng Zhang et al.
Summary: In this study, copper ferroalloys with different iron contents were prepared using mechanical alloying and vacuum sintering, followed by hot and cold rolling. The CFAs with homogenous and fine in-situ Fe particles showed better performance compared to conventional casting, achieving a good combination of mechanical and functional properties after annealing at 400 degrees C. Relations between microstructure and mechanical/functional properties were thoroughly discussed.
Article
Multidisciplinary Sciences
Changjian Yan et al.
Summary: The study demonstrates that ultrafine grained Mg alloys with dense twins exhibit high strength and reduced corrosion rate compared to conventional ultrafine grains, achieved through a carefully designed multi-directional compression treatment refining grain size down to 300nm. This technique not only decreases micro-galvanic corrosion tendency, but also completely suppresses severe localized corrosion.
NATURE COMMUNICATIONS
(2021)
Article
Crystallography
Doudou Long et al.
Summary: The microstructure and texture distribution of ultra-high purity Cu-0.1Al alloy target are crucial for the quality of the sputtering film. XRD results show significant variation in texture types between UR and CR due to changes in strain path. Compared to UR, CR processing results in a more uniform deformation microstructure, reducing local-region stress concentration.
Article
Materials Science, Multidisciplinary
Jongun Moon et al.
Review
Materials Science, Multidisciplinary
Hao Wu et al.
PROGRESS IN MATERIALS SCIENCE
(2020)
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Mohsen Taheri Andani et al.
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Fatemeh Goli et al.
MATERIALS RESEARCH EXPRESS
(2019)
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Niraj Nayan et al.
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(2019)
Article
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Chenchen Zhi et al.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2018)
Article
Multidisciplinary Sciences
Xiaolei Wu et al.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2015)
Article
Engineering, Manufacturing
Sang-Ho Lee et al.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2013)
Article
Metallurgy & Metallurgical Engineering
Zhang Ding-fei et al.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2011)
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Nanoscience & Nanotechnology
Marion Calcagnotto et al.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2010)
Article
Materials Science, Multidisciplinary
Subramanya Sarma Vadlamani et al.
JOURNAL OF MATERIALS SCIENCE
(2007)
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S Suwas et al.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2003)
