Alloy solidification
Bracket formalism applied to phase field models of alloy solidification
... The structure of the paper is as follows: Section 2 introduces the bracket and illustrates its application to a simple phase field model of solidification and then extends to include a thermal field. The ...
12
Thermo-solutal modelling of microstructure formation during multiphase alloy solidification - a new approach
... of alloy solidification as described and explained in for example, [1], is now rou- tinely associated with the significant successes of the modelling methods of phase ...
7
Weak solutions to a multi phase field system of parabolic equations related to alloy solidification
... during alloy solidification has been developed in [6] and results in a system of nonlinear parabolic partial differential equations of the form (1), ...
51
On The Numerical Solution of Two Dimensional Model of an Alloy Solidification Problem
... Abstract In this paper, a linearized three level difference scheme is derived for two-dimensional model of an alloy solidification problem called Sivashinsky equation.. Further, it is pr[r] ...
9
Multiphase field modelling of alloy solidification
... to alloy solidification modelling that incorporates binary interface energies in a manner that correctly reproduces the associated theoretical angles at triple junctions in eutectic ...
16
An adaptive mesh method for phase-field simulation of alloy solidification in three dimensions
... Abstract. We present our computational method for binary alloy solidification which takes advantage of high performance computing where up to 1024 cores are employed. Much of the simulation at a ...
9
Advanced numerical methods for the simulation of alloy solidification with high Lewis number
... A fully-implicit numerical method based upon adaptively refined meshes for the thermal-solutal simulation of alloy solidification in 2D is presented. In addition we combine an unconditional stable second-order ...
6
A numerical approach to compensate for phase field interface effects in alloy solidification
... (15) where a = 1/(2 2 ), and Δ c 0 = | c L E − c S E | (where superscript E indicates equilibrium values). The derivation of Eq. (15), along with the de- termination of relationships between other parameters in the ...
13
Three dimensional thermal-solute phase field simulation of binary alloy solidification
... We here present our computational approach to simulating, at the meso-scale, three dimensional, non-isothermal alloy solidification from an initial small, spherical seed into a mature, dendritic crystal. A feature ...
21
Towards a 3-dimensional phase-field model of non-isothermal alloy solidification
... The technique which over the last few decades has perhaps received the most attention for simulating crystal structures from the melt is that of phase-field simulation [1, 2], in which a non- conserved order parameter φ ...
7
Stability and numerical approximation for a spacial class of semilinear parabolic equations on the Lipschitz bounded regions: Sivashinsky equation
... Dehghan, Error analysis of a meshless weak form method based on radial point interpolation technique for Sivashinsky equation arising in the alloy solidification problem , Journal of Com[r] ...
12
In Situ Observations of Solidification and Melting of Aluminum Alloy Using Ultrasonic Waveguide Sensor
... The chemical compositions of the materials used are shown in Table 2. In the experiments, 2 kg of the Al alloy is melted in a crucible and Ti specimens are then immersed. The diameter and length of the specimens ...
7
Observation of Manganese Bearing Particles in Molten AZ91 Magnesium Alloy by Rapid Solidification
... Magnesium alloy AZ91 contains ...molten alloy and how contribute to grain refinement by ...AZ91 alloy was melted in a stainless steel tube and then injected onto a copper wheel rotating at high-speed ...
6
Continuous Semi Solid Casting Process for Aluminum Alloy Billets
... With 150 mm round billets, as shown in the upper part of Fig. 9, a mixed structure consisting of granular particles and a fine eutectic structure was observed, except in the chill layer which formed 2 to 3 mm from the ...
6
Mechanical Properties of High Strength Al Mg Si Alloy during Solidification
... Mechanical properties of high strength Al-Mg-Si alloy during solidification have been investigated. Tensile strength and ductility have been measured by using an electromagnetic induction heating tensile machine. ...
7
Hydriding and dehydriding kinetics of melt spun nanocrystalline Mg20Ni10 xCux (x = 0 4) alloys
... tion capacity at 200℃. The kinetics of hydrogenation was extremely fast so that the alloys absorbed more than 95% of their hydrogen capacities within the first 5 min. The excellent hydriding kinetics is ascribed to the ...
8
Investigations on the Solidification Behavior of Al Fe Si Alloy in an Alternating Magnetic Field
... Al-Fe-Si alloy were investigated. Solidification characteristics of the alloy were predicted by software Thermo-Calc and compared to the experimental ...the alloy solidified with and without the ...
7
Hydrogen Absorption and Electrochemical Properties of As Quenched Nanocrystalline Mg20Ni10 – xCux (x = 0 – 4) Alloys
... can be seen that all hydriding kinetic curves of the as- quenched alloys show an initial fast hydrogen absorption stage after which the hydrogen content is saturated at longer hydrogenation time, indicating that the ...
9
Fluid Dynamics and Heat Transfer in Non-Newtonian Annular Cylindrical Solidification of a Binary Alloy
... Abstract—Fluid mechanics and heat transfer of a power law non Newtonian binary alloy are described inside the annular space between concentric horizontal cylinders. Liquid to solid phase transformation, originated ...
5
In Situ Observation of Nonmetallic Inclusion Formation in NiTi Alloys
... NiTi alloy The results shown in ...the solidification of the NiTi al- loy ...NiTi alloy starts to solidify, solutes such as Ti, C, and O con- centrate in the residual liquid zone around the solid ...
6