The Experts below are selected from a list of 162 Experts worldwide ranked by ideXlab platform
Huiying Wang - One of the best experts on this subject based on the ideXlab platform.
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multi scale study of microstructure evolution in hot extruded nano sized tib2 Particle reinforced aluminum composites
Materials & Design, 2017Co-Authors: Zhe Chen, Yujuan Wu, M H Mathon, A Borbely, Dong Chen, Gang Ji, Mingliang Wang, Shengyi Zhong, Huiying WangAbstract:Abstract The microstructural evolution of in-situ TiB2 nano-Particle reinforced AlZnMgCu composites during hot extrusion was investigated from micro to macro scales by a combination of various techniques, including neutron and synchrotron X-ray diffraction, optical microscopy, scanning and transmission electron microscopy and electron backscatter diffraction (EBSD). The development of microstructure has shown a bimodal grain structure with distinctive spatial distributions of TiB2 Particles: the elongated coarse grain structure with smaller dispersed Particles and the fine grains mixed with clusters of relatively larger Particles. The Particle stimulated nucleation occurs at large Particle clusters, resulting in recystallized (sub)micron sized fine grains. The dispersed smaller Particles are observed to promote dislocation generation and to prohibit recovery. They are shown to reduce the misorientation of low angle grain boundaries due to the pinning effects on independent dislocations, which also lead to the suppression of dynamic recovery and increase of driving force for dynamic recrystallization. Quantitative texture analysis combined with neutron diffraction and EBSD has exhibited the development of a strong 〈111〉 and 〈001〉 dual fiber texture, and both texture volume fractions are changing with the Particle content. In addition, the synchrotron diffraction experiments have shown that dislocation density increases with the Particle content in both texture components. The microstructure evolution is the result from a complex process of Particles/matrix interaction during the deformation and dynamic recrystallization. In comparison with its Particle-free alloy counterpart, the thermomechanical response of the composites at high temperature is discussed in terms of aluminum deformation and recrystallization mechanisms combined with Nanosized Particle effects.
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multi scale study of microstructure evolution in hot extruded nano sized tib2 Particle reinforced aluminum composites
Materials & Design, 2017Co-Authors: Zhe Chen, M H Mathon, A Borbely, Dong Chen, Mingliang Wang, Shengyi Zhong, G A Sun, Huiying WangAbstract:Abstract The microstructural evolution of in-situ TiB2 nano-Particle reinforced AlZnMgCu composites during hot extrusion was investigated from micro to macro scales by a combination of various techniques, including neutron and synchrotron X-ray diffraction, optical microscopy, scanning and transmission electron microscopy and electron backscatter diffraction (EBSD). The development of microstructure has shown a bimodal grain structure with distinctive spatial distributions of TiB2 Particles: the elongated coarse grain structure with smaller dispersed Particles and the fine grains mixed with clusters of relatively larger Particles. The Particle stimulated nucleation occurs at large Particle clusters, resulting in recystallized (sub)micron sized fine grains. The dispersed smaller Particles are observed to promote dislocation generation and to prohibit recovery. They are shown to reduce the misorientation of low angle grain boundaries due to the pinning effects on independent dislocations, which also lead to the suppression of dynamic recovery and increase of driving force for dynamic recrystallization. Quantitative texture analysis combined with neutron diffraction and EBSD has exhibited the development of a strong 〈111〉 and 〈001〉 dual fiber texture, and both texture volume fractions are changing with the Particle content. In addition, the synchrotron diffraction experiments have shown that dislocation density increases with the Particle content in both texture components. The microstructure evolution is the result from a complex process of Particles/matrix interaction during the deformation and dynamic recrystallization. In comparison with its Particle-free alloy counterpart, the thermomechanical response of the composites at high temperature is discussed in terms of aluminum deformation and recrystallization mechanisms combined with Nanosized Particle effects.
Zhe Chen - One of the best experts on this subject based on the ideXlab platform.
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multi scale study of microstructure evolution in hot extruded nano sized tib2 Particle reinforced aluminum composites
Materials & Design, 2017Co-Authors: Zhe Chen, Yujuan Wu, M H Mathon, A Borbely, Dong Chen, Gang Ji, Mingliang Wang, Shengyi Zhong, Huiying WangAbstract:Abstract The microstructural evolution of in-situ TiB2 nano-Particle reinforced AlZnMgCu composites during hot extrusion was investigated from micro to macro scales by a combination of various techniques, including neutron and synchrotron X-ray diffraction, optical microscopy, scanning and transmission electron microscopy and electron backscatter diffraction (EBSD). The development of microstructure has shown a bimodal grain structure with distinctive spatial distributions of TiB2 Particles: the elongated coarse grain structure with smaller dispersed Particles and the fine grains mixed with clusters of relatively larger Particles. The Particle stimulated nucleation occurs at large Particle clusters, resulting in recystallized (sub)micron sized fine grains. The dispersed smaller Particles are observed to promote dislocation generation and to prohibit recovery. They are shown to reduce the misorientation of low angle grain boundaries due to the pinning effects on independent dislocations, which also lead to the suppression of dynamic recovery and increase of driving force for dynamic recrystallization. Quantitative texture analysis combined with neutron diffraction and EBSD has exhibited the development of a strong 〈111〉 and 〈001〉 dual fiber texture, and both texture volume fractions are changing with the Particle content. In addition, the synchrotron diffraction experiments have shown that dislocation density increases with the Particle content in both texture components. The microstructure evolution is the result from a complex process of Particles/matrix interaction during the deformation and dynamic recrystallization. In comparison with its Particle-free alloy counterpart, the thermomechanical response of the composites at high temperature is discussed in terms of aluminum deformation and recrystallization mechanisms combined with Nanosized Particle effects.
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multi scale study of microstructure evolution in hot extruded nano sized tib2 Particle reinforced aluminum composites
Materials & Design, 2017Co-Authors: Zhe Chen, M H Mathon, A Borbely, Dong Chen, Mingliang Wang, Shengyi Zhong, G A Sun, Huiying WangAbstract:Abstract The microstructural evolution of in-situ TiB2 nano-Particle reinforced AlZnMgCu composites during hot extrusion was investigated from micro to macro scales by a combination of various techniques, including neutron and synchrotron X-ray diffraction, optical microscopy, scanning and transmission electron microscopy and electron backscatter diffraction (EBSD). The development of microstructure has shown a bimodal grain structure with distinctive spatial distributions of TiB2 Particles: the elongated coarse grain structure with smaller dispersed Particles and the fine grains mixed with clusters of relatively larger Particles. The Particle stimulated nucleation occurs at large Particle clusters, resulting in recystallized (sub)micron sized fine grains. The dispersed smaller Particles are observed to promote dislocation generation and to prohibit recovery. They are shown to reduce the misorientation of low angle grain boundaries due to the pinning effects on independent dislocations, which also lead to the suppression of dynamic recovery and increase of driving force for dynamic recrystallization. Quantitative texture analysis combined with neutron diffraction and EBSD has exhibited the development of a strong 〈111〉 and 〈001〉 dual fiber texture, and both texture volume fractions are changing with the Particle content. In addition, the synchrotron diffraction experiments have shown that dislocation density increases with the Particle content in both texture components. The microstructure evolution is the result from a complex process of Particles/matrix interaction during the deformation and dynamic recrystallization. In comparison with its Particle-free alloy counterpart, the thermomechanical response of the composites at high temperature is discussed in terms of aluminum deformation and recrystallization mechanisms combined with Nanosized Particle effects.
Daniela Predoi - One of the best experts on this subject based on the ideXlab platform.
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structural and physical properties of antibacterial ag doped nano hydroxyapatite synthesized at 100 c
Nanoscale Research Letters, 2011Co-Authors: Carmen Steluta Ciobanu, Florian Massuyeau, Liliana Violeta Constantin, Daniela PredoiAbstract:Synthesis of Nanosized Particle of Ag-doped hydroxyapatite with antibacterial properties is in the great interest in the development of new biomedical applications. In this article, we propose a method for synthesized the Ag-doped nanocrystalline hydroxyapatite. A silver-doped nanocrystalline hydroxyapatite was synthesized at 100°C in deionized water. Other phase or impurities were not observed. Silver-doped hydroxyapatite nanoParticles (Ag:HAp) were performed by setting the atomic ratio of Ag/[Ag + Ca] at 20% and [Ca + Ag]/P as 1.67. The X-ray diffraction studies demonstrate that powders made by co-precipitation at 100°C exhibit the apatite characteristics with good crystal structure and no new phase or impurity is found. The scanning electron microscopy (SEM) observations suggest that these materials present a little different morphology, which reveals a homogeneous aspect of the synthesized Particles for all samples. The presence of calcium (Ca), phosphor (P), oxygen (O), and silver (Ag) in the Ag:HAp is confirmed by energy dispersive X-ray (EDAX) analysis. FT-IR and FT-Raman spectroscopies revealed that the presence of the various vibrational modes corresponds to phosphates and hydroxyl groups. The strain of Staphylococcus aureus was used to evaluate the antibacterial activity of the Ca10-xAgx(PO4)6(OH)2 (x = 0 and 0.2). In vitro bacterial adhesion study indicated a significant difference between HAp (x = 0) and Ag:HAp (x = 0.2). The Ag:Hap nanopowder showed higher inhibition.
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Structural and physical properties of antibacterial Ag-doped nano-hydroxyapatite synthesized at 100A degrees C
Nanoscale Research Letters, 2011Co-Authors: Carmen Steluta Ciobanu, Florian Massuyeau, Liliana Violeta Constantin, Daniela PredoiAbstract:Synthesis of Nanosized Particle of Ag-doped hydroxyapatite with antibacterial properties is in the great interest in the development of new biomedical applications. In this article, we propose a method for synthesized the Ag-doped nanocrystalline hydroxyapatite. A silver-doped nanocrystalline hydroxyapatite was synthesized at 100°C in deionized water. Other phase or impurities were not observed. Silver-doped hydroxyapatite nanoParticles (Ag:HAp) were performed by setting the atomic ratio of Ag/[Ag + Ca] at 20% and [Ca + Ag]/P as 1.67. The X-ray diffraction studies demonstrate that powders made by co-precipitation at 100°C exhibit the apatite characteristics with good crystal structure and no new phase or impurity is found. The scanning electron microscopy (SEM) observations suggest that these materials present a little different morphology, which reveals a homogeneous aspect of the synthesized Particles for all samples. The presence of calcium (Ca), phosphor (P), oxygen (O), and silver (Ag) in the Ag:HAp is confirmed by energy dispersive X-ray (EDAX) analysis. FT-IR and FT-Raman spectroscopies revealed that the presence of the various vibrational modes corresponds to phosphates and hydroxyl groups. The strain of Staphylococcus aureus was used to evaluate the antibacterial activity of the Ca10-xAgx(PO4)6(OH)2 (x = 0 and 0.2). In vitro bacterial adhesion study indicated a significant difference between HAp (x = 0) and Ag:HAp (x = 0.2). The Ag:Hap nanopowder showed higher inhibition.
Shengyi Zhong - One of the best experts on this subject based on the ideXlab platform.
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multi scale study of microstructure evolution in hot extruded nano sized tib2 Particle reinforced aluminum composites
Materials & Design, 2017Co-Authors: Zhe Chen, Yujuan Wu, M H Mathon, A Borbely, Dong Chen, Gang Ji, Mingliang Wang, Shengyi Zhong, Huiying WangAbstract:Abstract The microstructural evolution of in-situ TiB2 nano-Particle reinforced AlZnMgCu composites during hot extrusion was investigated from micro to macro scales by a combination of various techniques, including neutron and synchrotron X-ray diffraction, optical microscopy, scanning and transmission electron microscopy and electron backscatter diffraction (EBSD). The development of microstructure has shown a bimodal grain structure with distinctive spatial distributions of TiB2 Particles: the elongated coarse grain structure with smaller dispersed Particles and the fine grains mixed with clusters of relatively larger Particles. The Particle stimulated nucleation occurs at large Particle clusters, resulting in recystallized (sub)micron sized fine grains. The dispersed smaller Particles are observed to promote dislocation generation and to prohibit recovery. They are shown to reduce the misorientation of low angle grain boundaries due to the pinning effects on independent dislocations, which also lead to the suppression of dynamic recovery and increase of driving force for dynamic recrystallization. Quantitative texture analysis combined with neutron diffraction and EBSD has exhibited the development of a strong 〈111〉 and 〈001〉 dual fiber texture, and both texture volume fractions are changing with the Particle content. In addition, the synchrotron diffraction experiments have shown that dislocation density increases with the Particle content in both texture components. The microstructure evolution is the result from a complex process of Particles/matrix interaction during the deformation and dynamic recrystallization. In comparison with its Particle-free alloy counterpart, the thermomechanical response of the composites at high temperature is discussed in terms of aluminum deformation and recrystallization mechanisms combined with Nanosized Particle effects.
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multi scale study of microstructure evolution in hot extruded nano sized tib2 Particle reinforced aluminum composites
Materials & Design, 2017Co-Authors: Zhe Chen, M H Mathon, A Borbely, Dong Chen, Mingliang Wang, Shengyi Zhong, G A Sun, Huiying WangAbstract:Abstract The microstructural evolution of in-situ TiB2 nano-Particle reinforced AlZnMgCu composites during hot extrusion was investigated from micro to macro scales by a combination of various techniques, including neutron and synchrotron X-ray diffraction, optical microscopy, scanning and transmission electron microscopy and electron backscatter diffraction (EBSD). The development of microstructure has shown a bimodal grain structure with distinctive spatial distributions of TiB2 Particles: the elongated coarse grain structure with smaller dispersed Particles and the fine grains mixed with clusters of relatively larger Particles. The Particle stimulated nucleation occurs at large Particle clusters, resulting in recystallized (sub)micron sized fine grains. The dispersed smaller Particles are observed to promote dislocation generation and to prohibit recovery. They are shown to reduce the misorientation of low angle grain boundaries due to the pinning effects on independent dislocations, which also lead to the suppression of dynamic recovery and increase of driving force for dynamic recrystallization. Quantitative texture analysis combined with neutron diffraction and EBSD has exhibited the development of a strong 〈111〉 and 〈001〉 dual fiber texture, and both texture volume fractions are changing with the Particle content. In addition, the synchrotron diffraction experiments have shown that dislocation density increases with the Particle content in both texture components. The microstructure evolution is the result from a complex process of Particles/matrix interaction during the deformation and dynamic recrystallization. In comparison with its Particle-free alloy counterpart, the thermomechanical response of the composites at high temperature is discussed in terms of aluminum deformation and recrystallization mechanisms combined with Nanosized Particle effects.
Mingliang Wang - One of the best experts on this subject based on the ideXlab platform.
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multi scale study of microstructure evolution in hot extruded nano sized tib2 Particle reinforced aluminum composites
Materials & Design, 2017Co-Authors: Zhe Chen, Yujuan Wu, M H Mathon, A Borbely, Dong Chen, Gang Ji, Mingliang Wang, Shengyi Zhong, Huiying WangAbstract:Abstract The microstructural evolution of in-situ TiB2 nano-Particle reinforced AlZnMgCu composites during hot extrusion was investigated from micro to macro scales by a combination of various techniques, including neutron and synchrotron X-ray diffraction, optical microscopy, scanning and transmission electron microscopy and electron backscatter diffraction (EBSD). The development of microstructure has shown a bimodal grain structure with distinctive spatial distributions of TiB2 Particles: the elongated coarse grain structure with smaller dispersed Particles and the fine grains mixed with clusters of relatively larger Particles. The Particle stimulated nucleation occurs at large Particle clusters, resulting in recystallized (sub)micron sized fine grains. The dispersed smaller Particles are observed to promote dislocation generation and to prohibit recovery. They are shown to reduce the misorientation of low angle grain boundaries due to the pinning effects on independent dislocations, which also lead to the suppression of dynamic recovery and increase of driving force for dynamic recrystallization. Quantitative texture analysis combined with neutron diffraction and EBSD has exhibited the development of a strong 〈111〉 and 〈001〉 dual fiber texture, and both texture volume fractions are changing with the Particle content. In addition, the synchrotron diffraction experiments have shown that dislocation density increases with the Particle content in both texture components. The microstructure evolution is the result from a complex process of Particles/matrix interaction during the deformation and dynamic recrystallization. In comparison with its Particle-free alloy counterpart, the thermomechanical response of the composites at high temperature is discussed in terms of aluminum deformation and recrystallization mechanisms combined with Nanosized Particle effects.
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multi scale study of microstructure evolution in hot extruded nano sized tib2 Particle reinforced aluminum composites
Materials & Design, 2017Co-Authors: Zhe Chen, M H Mathon, A Borbely, Dong Chen, Mingliang Wang, Shengyi Zhong, G A Sun, Huiying WangAbstract:Abstract The microstructural evolution of in-situ TiB2 nano-Particle reinforced AlZnMgCu composites during hot extrusion was investigated from micro to macro scales by a combination of various techniques, including neutron and synchrotron X-ray diffraction, optical microscopy, scanning and transmission electron microscopy and electron backscatter diffraction (EBSD). The development of microstructure has shown a bimodal grain structure with distinctive spatial distributions of TiB2 Particles: the elongated coarse grain structure with smaller dispersed Particles and the fine grains mixed with clusters of relatively larger Particles. The Particle stimulated nucleation occurs at large Particle clusters, resulting in recystallized (sub)micron sized fine grains. The dispersed smaller Particles are observed to promote dislocation generation and to prohibit recovery. They are shown to reduce the misorientation of low angle grain boundaries due to the pinning effects on independent dislocations, which also lead to the suppression of dynamic recovery and increase of driving force for dynamic recrystallization. Quantitative texture analysis combined with neutron diffraction and EBSD has exhibited the development of a strong 〈111〉 and 〈001〉 dual fiber texture, and both texture volume fractions are changing with the Particle content. In addition, the synchrotron diffraction experiments have shown that dislocation density increases with the Particle content in both texture components. The microstructure evolution is the result from a complex process of Particles/matrix interaction during the deformation and dynamic recrystallization. In comparison with its Particle-free alloy counterpart, the thermomechanical response of the composites at high temperature is discussed in terms of aluminum deformation and recrystallization mechanisms combined with Nanosized Particle effects.
