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Article
Nanoparticle Additions Improve the Corrosion Performance of Ni-Cr-Fe-Based Cast Superalloys
The present work investigated the influence of TiC nanoparticles on the microstructure and corrosion performance of a cast superalloy K4169. The eutectic Laves phase is reduced and the as-cast grain size is re...
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Article
3D highly oriented metal foam: a competitive self-supporting anode for high-performance lithium-ion batteries
To develop good rate capability and good cycle stability electrode, hierarchical porous coral-like ZnO/ZnCo2O4/Co3O4 coating was fabricated on a novel 3D straight-through layered copper current collector with one...
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Article
Open AccessSuperior high creep resistance of in situ nano-sized TiCx/Al-Cu-Mg composite
The tensile creep behavior of Al-Cu-Mg alloy and its composite containing in situ nano-sized TiCx were explored at temperatures of 493 K, 533 K and 573 K with the applied stresses in the range of 40 to 100 MPa. T...
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Article
The role of CuO–TiO2 additives in the preparation of high-strength porous alumina scaffolds using directional freeze casting
Lamellar porous Al2O3 scaffolds with initial solid loading of 30 vol% were prepared by freeze casting using micron-sized Al2O3 powders as raw material and CuO–TiO2 additives as sintering aid. The effects of the c...
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Article
Open AccessEffect of Mn, Fe and Co on the compression strength and ductility of in situ nano-sized TiB2/TiAl composites
The element of Fe can enhance the strength of TiB2/TiAl composite, but it is detrimental to the ductility of the composite due to the existence of large bulk TiB2 phase at grain boundary. The element of Mn is ben...
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Article
Open AccessGeneralized-stacking-fault energy and twin-boundary energy of hexagonal close-packed Au: A first-principles calculation
Although solid Au is usually most stable as a face-centered cubic (fcc) structure, pure hexagonal close-packed (hcp) Au has been successfully fabricated recently. However, the phase stability and mechanical prope...
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Article
Manufacture of Nano-Sized Particle-Reinforced Metal Matrix Composites: A Review
Compared to the micro-sized particle-reinforced metal matrix composites, the nano-sized particle-reinforced metal matrix composites possess superior strength, ductility, and wear resistance, and they also exh...
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Article
Effect of Cr Content on the Compression Properties and Abrasive Wear Behavior of the High-Volume Fraction (TiC–TiB2)/Cu Composites
The (TiC–TiB2)/Cu composites with 50 vol% TiC–TiB2 ceramic particles were successfully fabricated by the combustion synthesis and hot press consolidation in a Cu–Ti–B4C–Cr system. The effects of the Cr content on...
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Article
Preparation of High-Strength Al–Mg–Si/Al2O3 Composites with Lamellar Structures Using Freeze Casting and Pressureless Infiltration Techniques
Lamellar porous alumina scaffolds with the initial solid loadings of 20, 25, and 30 vol% were prepared by freeze casting using 5 μm alumina powders. With the addition of 3 wt% MgO–Al2O3–SiO2 nanopowders in a eute...
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Article
Effect of structural transition in an amorphous Ni80P20 alloy on the wetting by a eutectic Sn–Bi solder
Annealing-induced structural transition from amorphous to nanocrystalline states is believed to have a significant effect on the wettability of metallic glass alloys. In this study, an amorphous Ni80P20 alloy was...
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Article
Wetting and reaction of molten La with poly- and mono-crystalline MgO at 1323 K
Wetting of poly- and mono-crystalline MgO substrates by molten La was investigated at 1323 K in a high vacuum using a modified sessile drop method. The wettability seems to depend mildly on the substrate orien...
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Article
Wetting of (0001) α-alumina single crystals by molten Mg–Al alloys in the presence of evaporation
The wetting of (0001) α-alumina single crystals by Mg–Al alloys over a wide composition range at 1073 K was investigated using an improved sessile drop method in a flowing argon atmosphere. The initial contact...
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Article
Open AccessSelf-propagating high-temperature synthesis of nano-TiC x particles with different shapes by using carbon nano-tube as C source
With using the carbon nano-tube (CNT) of high chemical activity, nano-TiC x particles with different growth shapes were synthesized through the self-propagating high temperature...
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Article
Open AccessWettability of amorphous and nanocrystalline Fe78B13Si9 substrates by molten Sn and Bi
The wettability of amorphous and annealing-induced nanocrystalline Fe78B13Si9 ribbons by molten Sn and Bi at 600 K was measured using an improved sessile drop method. The results demonstrate that the structural r...
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Article
Evaporation-coupled wetting of ZrO2 by molten Mg in Ar atmosphere
The wetting behaviors of molten Mg drops on polycrystalline ZrO2 substrate surfaces were studied in a controlled Ar atmosphere at 948–1173 K using an improved sessile drop method. The ZrO2 substrate is virtually ...
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Article
Reactive wetting of polycrystalline TiC by molten Zr55Cu30Al10Ni5 metallic glass alloy
The isotherm wetting and spreading behaviors of polycrystalline TiC by molten Zr55Cu30Al10Ni5 alloy were investigated at 1133 to 1253 K in a vacuum by using a modified sessile drop method. The system displays goo...
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Article
Role of Fe incorporation in the self-propagating high-temperature synthesis reaction in an Al–Ti–B4C system
Effects of Fe incorporation into Al–Ti–B4C reactants on the combustion behaviors, reaction mechanism, synthesized products, and possible natural convection of fluids were investigated. The incorporation of Fe sig...
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Article
Reaction Behavior and Mechanism during Self-Propagating High-Temperature Synthesis Reaction in an Al-TiO2-B4C System
The reaction behavior and mechanism during self-propagating high-temperature synthesis (SHS) in an Al-TiO2-B4C system were investigated. The result shows that the reaction could be self-sustaining for the Al cont...
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Article
Effect of TiO2 addition on the combustion synthesis in the Ti–B4C system
The effects of TiO2 addition on the reaction behavior, product, and mechanism in the Ti–B4C system were investigated in this study. The reaction could be self-sustaining for the TiO2 addition no more than ∼33% of...
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Article
Simultaneously increasing the strength and ductility of the modified casting Al–Cu alloy
A modified casting Al–Cu alloy with ultrahigh tensile strength and ductility of about 520 MPa and 13.5% was obtained by PrxOy addition. PrxOy was decomposed to form AlPrO3, which acted as the effective heterogene...
