نتایج جستجو برای: hall petch law

تعداد نتایج: 234031  

Journal: :Metals 2022

The mechanical properties of Ti49.8Ni50.2 (at %) alloy under tension at room temperature are studied in dependence on the true strain (e = 1.84–9.55) specified during isothermal multi-axial forging (abc-pressing). It was found that stress beginning pseudoyield plateau does not depend value abc-strain. after abs-pressing, already a e 1.84, yield σy 900 ± 25 MPa, which is more than twice as high ...

Journal: :Journal of Alloys and Compounds 2021

Commercial pure Ti alloys are favorable for biomedical applications; however, they need to be strengthened by the addition of alloying elements. Herein, Ti-Fe modified with Zr were explored produce that exhibit high strength and ductility biocompatible. extruded materials solutes prepared combining solid sintering hot extrusion. X-ray diffraction results revealed lattice constant α-Ti β-Ti incr...

2007
M. Eliashvili

Abstract. Area non-preserving transformations in the non-commutative plane are introduced with the aim to map the ν = 1 integer quantum Hall effect (IQHE) state on the fractional quantum Hall effect (FQHE) ν = 1 2p+1 FQHE states. Using the hydrodynamical description of the quantum Hall fluid, it is shown that these transformations are generated by vector fields satisfying the Gauss law in the i...

Journal: :Chinese Journal of Mechanical Engineering 2022

Abstract Traditional metallic materials usually face a dilemma between high strength and poor strain hardening capacity. However, heterogeneous structured have been found to obviously overcome the trade-off. Herein, gradient lamellar structure was fabricated through ultrasound-aided deep rolling technique in pure Ni with stacking fault energy after heat treatment. The successively divided into ...

Journal: :Materials Characterization 2022

The effects of cerium (Ce) on the microstructure, mechanical properties and strain hardening behavior Fe-18Mn-0.6C twin-induced plasticity (TWIP) steel were investigated by electron backscatter diffraction, X-ray diffraction transmission microscopy. Compared with addition Al, Ce significantly reduced stacking fault energy TWIP steel, which promotes formation deformation annealing twins. dynamic...

Journal: :Ceramics 2021

High strength transparent Y2O3 ceramics were fabricated from commercial powders using spark plasma sintering (SPS) technique by optimizing the heating rate. The rate significantly influenced microstructures and optical/mechanical properties of ceramics. Grain growth was limited accordingly with increasing ball milling process is likely to further enhance sinterability during SPS processing. den...

2008
M. Tokumoto

We have studied the temperature dependence of the integer quantum Hall transitions in the molecular crystal (TMTSF)2PF6. We find that the transition width between the quantum Hall plateaus does not exhibit the universal power-law scaling behavior of the integer quantum Hall effect observed in semiconducting devices. Instead, the slope of the ρxy risers, dρxy/dB, and the (inverse) width of the ρ...

Journal: :Physical review letters 2003
E Peled D Shahar Y Chen D L Sivco A Y Cho

We present an experimental study of mesoscopic, two-dimensional electronic systems at high magnetic fields. Our samples, prepared from a low-mobility InGaAs/InAlAs wafer, exhibit reproducible, sample specific, resistance fluctuations. Focusing on the lowest Landau level, we find that, while the diagonal resistivity displays strong fluctuations, the Hall resistivity is free of fluctuations and r...

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