Aug 01 2007 0183 32 The measured liquidus temperature of magnesium alloy AM50A is 62698 62775 and 63053 176 C for applied pressure of 30 60 and 90 MPa respectively Compared with the non-equilibrium liquidus temperature of 62513 176 C at 0 MPa this experimental observation indicates that the liquidus temperature of the alloy increased by 185 262 and 540...

PDF The purpose of this paper is to develop a mathematical equation which will be able to accurately predict the liquidus temperature of various aluminum and magnesium cast alloys on the basis...

1 Locate composition and temperature in diagram 2 In two phase region draw the tie line or isotherm 3 Fraction of a phase is determined by taking the length of the tie line to the phase boundary for the other phase and dividing by the total length of tie line The lever rule is a mechanical analogy to the mass balance calculation...

Holding the sampler on the weight stationary cool it to a temperature below the liquidus temperature When the temperature reaches the liquidus device delivers light and the example of the calculation of the content of magnesium chloride according to the formula given values T L 0 = 643 0 = 10 K = 4 91 for T l = 663 7 = 10- 663 7-643 /4...

Apr 15 2009 0183 32 I have a problem with multicomponent solidification simulation Firstly it seems that equation 242-5 of user s manual is not correct I think it should be 1/K instead of K Secondly it seems that FLUENT doesn t calculate solidus and liquidus temperatures by these equations at all...

AM50A magnesium is a magnesium alloy Cited properties are appropriate for the as-fabricated no temper or treatment condition AM50A is the ASTM designation for this material M10500 is the UNS number It has a fairly high ductility among magnesium alloys In addition it has a fairly high melting temperature and a moderately low thermal...

The purpose of this paper is to develop a mathematical equation which will be able to accurately predict the liquidus temperature of various aluminum and magnesium cast alloys on the basis of their known chemical compositions An accurate knowledge of liquidus temperature permits a researcher to predict a variety of physical parameters pertaining to a given alloy...

empirically based calculation is realised Key words steel thermal analysis empirical formula liquidus temperature solidus temperature INTRODUCTION The methods of study of metallurgical processes are also based on knowledge of thermodynamic properties of materials occurring in a...

The characteristic temperatures of the selected quaternary CaO-MgO-Al2O3-SiO2 slags have been measured by the hemisphere method The effects of the basicity value and Al2O3 content studied The results indicated that basicity and the Al2O3 content had obvious influence on the characteristic temperatures of the selected slags All of the softening temperature the hemisphere temperature...

Estimation of liquidus temperatures for steels using thermodynamic approach J Miettinen and A A Howe i the number of studied alloys is too small ii the alloy selection is biased too much emphasis is put on some speci 222 c alloys Alternative schemes for the prediction of liquidus iii the compositional variation of some examined solute...

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Liquidus temperature Tliq is one of the most fundamental properties of BF slag however the conventional phase equilibrium diagram method for Tliq calculation can be hardly used in numerical simulations In this work an accurate and simple empirical formulation suitable for Tliq calculation of BF slags in numerical simulations is established...

For a given temperature and composition we can use phase diagramtodetermine 1 The phases that are present 2 Compositions of the phases 3 The relative fractions of the phases Finding the composition in a two phase region 1 Locate composition and temperature in diagram 2 In two phase region draw the tie lineor isotherm 3...

Liquidus temperature The liquidus temperature model also uses phase equilibrium calculations through Gibbs free energy minimization in the FactSage software For a specified slag composition the target temperature calculation is performed to determine the temperature with the liquid slag phase as precipitation target...

Magnesium-based bulk metallic glasses BMG have potential in applications ranging from biomedical to sports equipment and the Mg-Cu-Y system offers some of the most promising alloys Phase relations and ternary solubility of the binary and ternar...

onset andthe liquidus inthecaseoftheendpointFortheirsystem they found that the onset temperature of the melting peak was independent of alloy composition and heating rate the eutectic temperature in this case while the endpoint temperature varied linearly with the heating rate w ith almost the same slope for all compositions...

The effect of cooling rate on thermophysical properties of magnesium alloys MN Khan Department of Mechanical and Industrial Engineering Concordia University Montreal QC Canada H3G 1M8 M Aljarrah and JT Wood Department of Mechanical and Materials Engineering University of Western Ontario London ON Canada N6A 5B9 M Medraja...

Abstract In this paper the thermodynamic basis of ESTPHAD method is briefly shown and the development of the whole ternary calculation can be followed the first step is the calculation of liquidus and solidus temperatures of the binary phase diagrams Al-Cu and Al-Fe the second step is the estimation of the liquidus and solidus surfaces...

Silicon as a reference element has been chosen for aluminum alloys and aluminum for magnesium alloys The sum of the equivalent concentrations for other elements when added to the influence of the actual reference element is used to calculate the liquidus temperature of the alloy...

temperature gradient the geometry of the sys-tem and the thermophysical properties of both solidus and liquidus temperatures and density must be known for heat-transfer operations Viscosity density wetting angle and surface mations have been developed to calculate ther-mophysical properties for various materials in the solid and...

Jul 16 2009 0183 32 I have found the formula below to be accurate in estimating the liquidus temperature of steel alloys to better than plus or minus 20 degrees Fahrenheit Be sure to use weight percents in the following equation and not volume percents You can easily perform this calculation with a hand calculator...

Figure 6 depicts a plot of the predicted liquidus temperature for each of the aluminum and magnesium alloys presented in Tables 2 and 3 versus their experimentally determined counterparts Measured liquidus temperatures have been determined experimentally using the thermal analysis technique...

More information about the liquidus and solidus 114 114 Archives of Materials Science and Engineering Thermal analysis of the MCMgAl9Zn1 magnesium alloy temperatures and nucleation of eutectic were characterized based on change on the first derivative curve was characterized at 4282qC the first derivative curv...

Research Article Calculation of Liquidus Temperature for Aluminum and Magnesium Alloys Applying Method of Equivalency MileBDjurdjevi T 1 Sre TkoManasijevi T 2 ZoranOdanovi T 1 andNatalijaDoli T3 IMS Institute Bulevar Vojvode Mi si 180 ca Belgrade Serbia Lola Institute Kneza Vi...

purpose of studying the effect of fluid flow on the dendritic growth of magnesium alloys The modified projection method was used to solve the transport equations of flow field By coupling the flow field with the solute field simulation results of equiaxed and columnar dendritic growth of magnesium alloys with fluid flow were achieved...

KINETICS FOR MAGNESIUM ALLOY DEVELOPMENT 26 liquidus temperature decreases with Al addition up to at least roughly 10 and Ce also up to at least Scheil model was also used to calculate the fraction of phases formed in the three AE alloys according to the above solidification paths Calculation results...

Calculation of Liquidus Temperature for Aluminum and Magnesium Alloys Applying Method of Equivalency MileBDjurdjeviT 1 SreTkoManasijeviT 2 ZoranOdanoviT 1 andNatalijaDoliT 3...

The line above which the alloy is liquid is called the liquidus line At temperature just below this line crystals of solid solution start forming The line below which solidification completes is called solidus line Hence only solid solution exists at any Calculate the...

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