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Effect of small transition metal additions on alloy Al–8%Mg–4%Si superplasticity
Metallurgist, 2012Superplasticity properties, structural features, and mechanical properties are studied at room temperature for Al–Mg–Si alloy close to the eutectic point area of a quasibinary section on the composition diagram, containing 15% of secondary eutectic phase particles, additionally alloyed with one of the transition metals, i.e., chromium, zirconium, or ...
A. V. Mikhaylovskaya +2 more
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Thermal Analysis during Solidification of Mg-4%.wtAl Alloy during Lost Foam Casting Process
Materials Science Forum, 2011The lost foam casting (LFC) process utilizes the expanded polystyrene (EPS) foam pattern for the production of metallic components. The thermal degradation of the foam pattern has a significant effect on microstructure of the component. Dendrite coherency is important for the determination of the formation of the solidification structure and cast ...
D.H. Hou +4 more
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Effect of grain morphology on the degradation behavior of Mg-4 wt% Zn alloy in Hank's solution
Materials Science and Engineering: C, 2020The degradation behavior of Mg-4 wt% Zn alloy with three different microstructures was examined in Hank's solution at 37 °C by electrochemical measurements and immersion tests in this study. The results show that the sample with cellular structure exhibits a more positive corrosion potential, lower corrosion current density, larger impedance and more ...
Hongmin, Jia +2 more
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Effect of crystal orientation on corrosion behavior of directionally solidified Mg-4 wt% Zn alloy
Journal of Materials Science & Technology, 2018Abstract Microstructure and crystallographic orientation of directionally solidified Mg-4 wt% Zn alloy were characterized by X-ray computed tomography (XCT) and electron backscatter diffraction (EBSD) in this study. Results reveal that Mg-4 wt% Zn alloy with dendritic microstructure exhibits typical { 0002 } basal texture along growth ...
Hongmin Jia +2 more
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Enhanced age-hardening behaviour in Mg?4 wt.% Zn micro-alloyed with Ca
Scripta Materialia, 2004Abstract In the Mg–Zn system it has been shown that the addition of trace amounts of Ca can have a substantial positive influence on the precipitation process during artificial ageing. The microstructure of the modified alloy is more complex and has a much refined precipitate structure that is very stable for prolonged periods at elevated ...
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Psychopharmacology, 1989
Sixteen male smokers, abstinent the morning before testing, were assessed under four conditions: placebo chewing gum, 2 mg nicotine chewing gum, 4 mg nicotine gum, and cigarette smoking. Placebo gum was administered in the cigarette condition, while sham smoking occurred in the gum conditions.
A C, Parrott, G, Winder
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Sixteen male smokers, abstinent the morning before testing, were assessed under four conditions: placebo chewing gum, 2 mg nicotine chewing gum, 4 mg nicotine gum, and cigarette smoking. Placebo gum was administered in the cigarette condition, while sham smoking occurred in the gum conditions.
A C, Parrott, G, Winder
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Journal of Materials Science & Technology, 2017
Through investigating and comparing the microstructure and mechanical properties of the as-extruded Mg alloys Mg–4%Li and Mg–4%Li–6%Zn–1.2%Y (in wt%), it demonstrates that although the formation of I-phase (Mg3Zn6Y, icosahedral structure) could weaken the crystallographic texture and improve the mechanical strength, the mechanical anisotropy in terms ...
C.Q. Li +4 more
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Through investigating and comparing the microstructure and mechanical properties of the as-extruded Mg alloys Mg–4%Li and Mg–4%Li–6%Zn–1.2%Y (in wt%), it demonstrates that although the formation of I-phase (Mg3Zn6Y, icosahedral structure) could weaken the crystallographic texture and improve the mechanical strength, the mechanical anisotropy in terms ...
C.Q. Li +4 more
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Optik, 2018
Abstract Novel yellow-emitting Ca5(Zn1-xMgx)4(VO4)6 self-activated phosphors were synthesized via a sol-gel method. The X-ray diffraction showed their typical cubic garnet structure. The photoluminescence excitation spectra of Ca5(Zn1-xMgx)4(VO4)6 phosphors exhibited a broadband ranging from 250 to 430 nm, which was originated from the [VO4]3− group ...
Jin Young Park +2 more
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Abstract Novel yellow-emitting Ca5(Zn1-xMgx)4(VO4)6 self-activated phosphors were synthesized via a sol-gel method. The X-ray diffraction showed their typical cubic garnet structure. The photoluminescence excitation spectra of Ca5(Zn1-xMgx)4(VO4)6 phosphors exhibited a broadband ranging from 250 to 430 nm, which was originated from the [VO4]3− group ...
Jin Young Park +2 more
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Reaction dynamics of Mg(4 1S, 3 1D2) with H2: Harpoon-type mechanism for highly excited states
The Journal of Chemical Physics, 2000Using a pump–probe technique, the reactions of Mg(4 1S0 and 3 1D2) with H2 have been measured to yield similar rotational distributions of MgH(v=0 and 1) as that obtained for the reaction of the Mg(3 1P1) state with H2. A series of measurements is conducted to clarify that the reactions are initiated directly by these higher states, rather than ...
Dean-Kuo Liu +2 more
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Permanent Mold Casting and Creep Behavior of Mg - 4 Al - 4 X: (Ca, Ce, La, Sr) Alloys
SAE Technical Paper Series, 2007<div class="htmlview paragraph">Creep-resistant magnesium alloys for automotive powertrain applications offer significant potential for vehicle weight reduction. In this study permanent mold casting, microstructure and creep behavior have been investigated for a series of ternary magnesium alloys (Mg-4Al-4X (X: Ca, Ce, La, Sr) wt%) and AXJ530 (Mg-
Nicholas D. Saddock +6 more
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