In order to quantitatively study the penetration capability of depleted uranium alloy, a simulation model bullet impact on target plate with FEM-SPH coupling algorithm was established by using LS-DYNA software, which combined Johnson-Cook intrinsic model, fracture criterion, and equation state conduct alloy bullets made tungsten high-strength steel penetrate at 1400 m/s initial velocity. The re...

In this research, optimization of the pulsed gas tungsten arc welding including pulse current, background current, pulse frequency and on time were investigated in welding of non-similar materials of austenitic stainless steel AISI 316L and nickel-base super alloy of Monel 400 by using ERNiCr3 filler metal. In order to obtain optimum conditions of welding the Taguchi method with the L9 array wa...

The conditions under which the emitter contact metal of a mesa-type bipolar transistor is sputter-deposited influence the contact’s stress and sheet resistance, which in turn affect the transistor’s structural stability and bandwidth, respectively. Through aggressive scaling of emitter dimensions, emitter-base and base-collector junction capacitances are reduced and high radio frequency (RF) ba...

In this study, cobalt-tungsten coatings were electrodeposited on copper substrates. Nanocrystalline and amorphous cobalt tungsten alloys from citrate-boric acid baths. The characterization of the alloy was carried out by scanning electron microscopy (SEM), X-ray fluorescence (XRF), diffraction (XRD). most significant factors, such as current density pH electrolyte that affect morphology, compos...

To understand the unexpectedly high thermoelectric performance observed in thin-film Heusler alloy ${\mathrm{Fe}}_{2}{\mathrm{V}}_{0.8}{\mathrm{W}}_{0.2}\mathrm{Al}$, we study magnon drag effect, generated by tungsten-based impurity band, as a possible source of this enhancement, analogy to phonon ${\mathrm{FeSb}}_{2}$. Assuming that has conduction band integrating with originated tungsten subs...

Ti-6Al-4V alloy has been widely used in industrial fields. Electrical discharge machining (EDM) is a commonly technology for alloy. During EDM of alloy, the thermal and physical characteristics tool electrode have an important influence on processing characteristics. In order to study different materials brass electrode, copper tungsten were perform this paper, electrodes with V-groove array st...

In this study the interaction of energetic oxygen ions with the beryllium-tungsten alloy Be2W is investigated by depth-resolved X-ray photo-electron spectroscopy (XPS). A 4 nm tungsten layer is deposited on polycrystalline beryllium. By alloying at 900 K for 60 min Be2W is formed. In successive steps oxygen ions are implanted with 500 and 1000 V acceleration voltage with a fluence of 5 · 1014 c...

High-spatial resolution synchrotron X-ray imaging was combined with diffraction for a detailed investigation of FA mode solidification in Fe-Mn-Si (FMS) alloys during tungsten inert gas (TIG) spot welding. The sequence radiographs and patterns clearly revealed that the formation equiaxed γ-Fe dendrite occurred front growing columnar δ-Fe dendrites without any observable phases interdendritic re...

As a new type of multi-principal component solid solution alloy, high-entropy alloy has the four major effects, i.e. high entropy, lattice distortion, slow diffusion, and “cocktail” in orderly arrangement atoms chemical disorder. It exhibits excellent comprehensive performances is expected to be used as high-temperature structural material, wear-resistant radiation-resistant which areas aerospa...