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Article
Recent progress of aluminum alloys and aluminum matrix composites produced via laser powder bed fusion: a review
Al alloys and aluminum matrix composites (AMCs) are characterized by high specific strength, high specific modulus, and low density. As one of the most promising advanced lightweight materials, Al alloys and A...
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Article
Preparation and investigation of structure, magnetic, and dielectric properties of (1 − x)Bi2Fe4O9–xMgFe2O4 bicomponent ceramics
Crystal structure, morphology, magnetic, and dielectric properties of (1 − x)Bi2Fe4O9–xMgFe2O4 bicomponent ceramics are investigated in detail. The material has been synthesized via sol–gel method. Analysis of X-...
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Article
Enhanced room-temperature magnetoelectric effect in xBi0.5Na0.5TiO3-(1-x)NiFe2O4 ceramics by magnetic field annealing
The polycrystalline xBi0.5Na0.5TiO3-(1-x)NiFe2O4 solid solutions with different ratios have been synthesized by sol-gel method. The samples are respectively annealed with nonmagnetic and magnetic field annealing ...
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Article
Effect of Post-weld Heat Treatment on Microstructure and Mechanical Properties of Dissimilar Metal Weld Used in Power Plants
High base metal dilution (50 pct) dissimilar metal weld between A508 low-alloy steel and 309L clad layer was fabricated to investigate the effect of extended post-weld heat treatment (PWHT) on microstructure a...
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Chapter and Conference Paper
Promising High-Speed Welding Techniques for Joining Polymers to Metals and Underlying Joining Mechanisms
Strong (DMW) of PA66 and 6061 Al was produced by (FLW) at welding speeds as high as 5 m/min. The temperature difference at various locations of the welds did not affect the local joining strength. In an at...
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Article
Blood pressure is associated with tea consumption: A cross-sectional study in a rural, elderly population of Jiangsu China
Tea has long been hypothesized to possess hypotensive effects. However, there is uncertainty regarding the association of tea consumption with arterial blood pressure (BP). We aimed to examine the association ...
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Article
Superplastic Constitutive Equation Including Percentage of High-Angle Grain Boundaries as a Microstructural Parameter
Fifteen Al-Mg-Sc samples with subgrain/grain sizes in the range of 1.8 to 4.9 μm were prepared through the processing methods of friction stir processing (FSP), equal-channel-angular pressing (ECAP), rolling, ann...
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Article
Effects of heating rates on microstructure and superplastic behavior of friction stir processed 7075 aluminum alloy
The effects of heating rate prior to tension on the microstructure and superplastic behavior of friction stir processed (FSP) 7075Al alloy, with an initial grain size of 6.2 μm, were investigated. Under both s...
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Article
Microstructural evolution and superplastic behavior in friction stir processed Mg–Li–Al–Zn alloy
A Mg–Li–Al–Zn alloy was friction stir processed (FSP) under water, and the microstructures and superplastic behavior in the FSP alloy were investigated. The FSP Mg–Li–Al–Zn alloy consisted of a mixed microstru...
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Article
Synthesis and crystal structure characterization of supramolecular complex [Cd2(Bipy)2(L)2(H2O)2] · 9H2O (H2L = 2,2′-bipyridyl-6,6′-dicarboxylic acid)
In the complex [Cd2(Bipy)2(L)2(H2O)2] · 9H2O, the center atom Cd(II) presents a seven-coordinated pentagonal bipyramidal geometry with seven coordination bonds, four Cd-N bonds, and three Cd-O bonds. X-ray struct...
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Article
A novel 3D lead(II) organometallic framework with four lead(II) nuclei as a secondary building unit: Synthesis and characterization
A new 3D layered compound, [Pb2(L)2H2O] n (L is phenylmalonic acid) was hydrothermally synthesized and characterized by single-crystal X-ray diffraction. In the compound, lead h...
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Article
Synthesis and crystal structure of a Cu(II) complex Cu2(Endc)2(Bipy)2 and its photoluminescence properties
A novel Cu(II) complex Cu2(Endc)2(Bipy)2 has been synthesized by the reaction of Cu(NO3)2 · 3H2O, Endc (endo-norbornene-cis-5,6-dicarboxylic acid), and Bipy (2,2-bipyridine) at room temperature. Elemental analysi...
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Article
Achieving high strain rate superplasticity in cast 7075Al alloy via friction stir processing
Cast 7075Al alloys under as-cast and homogenized conditions were subjected to single-pass friction stir processing (FSP). FSP converted the coarse as-cast structure to the fine-grained structure with a grain s...
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Article
Influence of Tool Dimension and Welding Parameters on Microstructure and Mechanical Properties of Friction-Stir-Welded 6061-T651 Aluminum Alloy
Six-millimeter-thick 6061Al-T651 plates were friction stir welded with varied welding parameters and tool dimensions. The low hardness zones (LHZs), determined by constructing the hardness distribution maps ar...
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Article
Whispering gallery mode biosensors in the low-Q limit
Whispering gallery modes (WGM) of dye-doped polystyrene beads with diameters from 20 down to 1.5 μm are studied with respect to their appearance and linewidth by excitation of the entire mode spectrum within t...
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Article
Dynamic and Gravitational Effects on the Correlation Volume: Experimental Methods
We report on the design of a new prototype flight instrument that will be used to repeat previous Earth-based measurements of nonlinear heat transport near the superfluid transition in the microgravity laborat...
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Article
Gravitational Effects on Nonlinear Heat Transport Near the Superfluid Transition in 4He
We have recently observed nonlinear heat transport within 30 nK of the superfluid transition temperature using heat flux, Q, in the range 0.1 < Q < 2 erg/(s cm 2 ). While Haussmann and Dohm (HD) accurately predi...
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Article
Effect of gravity on the thermal conductivity measurement of4He nearT λ
Precision measurements near the superfluid (λ) transition of4He is limited by a gravity induced inhomogeneity inT λ. Critical Dynamics in Microgravity (DYNAMX, a NASA preproject) will study the th...
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Article
Characterization and analysis of low-temperature superplasticity in 8090 Al-Li alloys
The 8090 Al-Li alloys, after a special thermomechanical process (TMP), exhibited low-temperature superplasticity (LTSP) from 350 °C to 450 °C and behaved differently from the conventional high-temperature supe...
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Article
Heat capacity of H2 adsorbed on Ne and on D2 preplated graphite
We have performed heat capacity measurement on H2 adsorbed on graphite preplated with either a monolayer of Ne or a monolayer of D2, to search for low temperature 2D liquid H2. We find evidence indicating that up...