The in ̄uence of chloride ion concentration and pH on the corrosion and electrochemical behaviour of die-cast and ingot-cast AZ91D alloy have been studied with a focus on the stability of microconstituents in these environments. The experimental techniques used include immersion studies, potentiodynamic polarization, X-ray di€raction and optical and scanning electron microscopy. The corrosion ra...

We present high-resolution images of the lateral distribution of interstitial iron across wafers from various positions along the length of a directionally solidifiedmulticrystalline silicon ingot. Iron images were taken on wafers in the as-cut state and also after two different phosphorus gettering steps performed at 8458C for 30min, one with an additional anneal at 6008C for 5 h (referred to ...

Phosphoric iron of two different phosphorus content, namely P1 (Fe-0.30P-0.226C), P2 (Fe0.11P-.028C) were first prepared by ingot casting route. The ingot were soaked and forged at 1150C. The microstructures of the phosphoric iron and its relevant mechanical properties such as hardness and tensile properties have been characterized. J-R curves of the material have been determined at room temper...

Abstract A comprehensive numerical model is proposed to study the influence of an axial magnetic field (AMF) on solidification behavior a Titanium-based (Ti–6Al–4V) vacuum arc remelting (VAR) ingot. Both static and time-varying AMF are examined. The 2D axisymmetric swirl includes calculating electromagnetic thermal fields in entire system composed electrode, plasma, ingot, mold. combination vec...

Recently, titanium-tantalum alloys have been studied as implant materials for dental and orthopedic surgery. However, titanium and tantalum are difficult to mix by common arc melting and induction melting, because of their high melting point and the marked difference between their densities (Ti: 1,680 degrees C, 4.5 g/cm3, Ta: 2,990 degrees C, 16.6 g/cm3). Thus, the Cold Crucible Levitation Mel...