(b) What are the factors that affecting the freezing rate during solidification of the molten metal and evaluate why nearly all metals experience shrinkage during solidification process.
Q: During solidification of a pure molten metal,the Grains in the casting near the mould wall are3;…
A: Grain size or formation during the metal forming process in engineering represents the internal…
Q: 3) The dihedral wetting angle between solid- liquid interface with lowest solidification cracking…
A: The angle for the solidification is 600
Q: How did you determine the eutectic point? Explain.
A: In phase diagram , eutectic point is the point where liquid exist at the lower temperature.this…
Q: Is it true that Martensite is tempered because it is too strong? Why or Why not
A: Initially, martensite is harder and brittle phase when steel is sudden cool down. When the hardness…
Q: Single-crystal technology is applied to nickel alloys that are used as gas turbine blades in…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: Assume you have 1kg of an alloy consisting of 85 wt% Sn and 15 wt% Pb at a temperature of 184 °C.…
A: Draw the above given phase diagram.
Q: Based on the phase diagrams, estimate the solubilities of Ni, Zn, Al, Sn, andBe in copper at room…
A: To estimate the solubility, the use of the atom size difference approach, we will determine the…
Q: 1- Examine carefully the microstructure of the specimens? 2- Draw nearly the microstructure with Mag…
A: What is microstructure? The microstructure is a very small scale structure of a material at the…
Q: Q3. a) What the structural changes occurring during the annealing of stee casting? (Explain and…
A: Annealing is a heat treatment process that changes the physical and sometimes also the chemical…
Q: During slow cooling , the resulting microstructure for hypo-eutectoid steel is .,while for…
A: Solution: Note: Dear Student! As per our guidelines, we are only allowed to answer three sub-parts…
Q: Ratio of solidification time
A: Given data, Ratio of solidification time of a cylindrical casting,where, height=radiusCubic…
Q: what are the stages of solidifaction in a casting process? when do those happen?what is under…
A:
Q: What are the rules which govern the formation of substitutional solid solutions?
A: Hume - Rothery Rules govern the formation of substitutional solid solution - 1. The crystal…
Q: To produce martensite, do you need to use a very slow cooling rate? Why or why not ?
A: Heat treatment is the process in which metal heat without reaching its molten point and then cool it…
Q: H.W: determine solidification time of cylinder casting, assuming that the radius is 6 cm and its…
A: givenradius of cylinder r=6cmheight of the cylinder h=15cmconstant k=0.22sec/cm
Q: Calculate the degrees of freedom for Points 1-4
A: Gibbs Phase rules - F= C-P+2 where F is the degrees of freedom C is number of components P is the…
Q: whether the riser can prevent macroporosity in the casting based on calculation applied to the riser…
A: here is module of riser is greater than module of casting it wil capable to prevent all…
Q: Which ingot has greater mechanical resistance? Why? Explain in detail what occurred during…
A: Given image : the image is showing two different ingot which shows the grain struture where one is…
Q: Copper alloy will cast by using mold have sphere shape attached with plate shape. The sphere shape…
A:
Q: is it possible to predict the metallic phases that may arise during the casting and solidification…
A: Solution: To Find: Is it possible to predict the metallic phases that may arise during the casting…
Q: At longer annealing times at appropriate temperatures, larger grains consume smaller ones. Summerize…
A: Annealing - Annealing is a heat treatment process generally use for steel structures. In annealing…
Q: In casting experiments performed during a certain alloy and type of sand mould it took 155 second…
A: A cube-shaped casting solidified in 155 seconds in a casting experiment using a specific alloy and…
Q: With a solidification factor of 0.97 x 106 s/m2, the solidification time (in seconds) for a…
A:
Q: How does the undercooling of a metallic material during heat treatment relate to it's mechanical…
A: Undercooling is the phenomenon where the metal remains in its liquid state below its solidification…
Q: Q6 Use the Iron carbon diagram to find 4 of the following. 1- The range of solidification temp.…
A:
Q: 12 - (CLO-1) A riser in the shape of a sphere is to be designed for a sand casting mold. The casting…
A:
Q: 13. For the heterogeneous solidification, derive the critical radius of solid nucleus r*, the…
A:
Q: With the aid of illustrations, explain the relationship between a vapor phase and a condensed
A: As the phrase 'condensed phases' implies, molecules in the liquid and solid forms of matter are…
Q: Please use phase diagram to explain why micro-segregation and macro-segregation happen during…
A: Solidification is basically a phenomenon that plays a great role in developing the diverse…
Q: 4.a) For the solidification of iron, calculate the critical radius r* and the activation free energy…
A:
Q: For the solidification of nickel, calculate the critical radius r* and the activation energy ΔG* if…
A: In case of the solidification of Nickel: The melting point is written as, The change in…
Q: Describe a method by which “ODS” alloys are produced and explain why it is not possible to cast…
A: Oxide dispersion strengthened (ODS) alloys, usually produced by a dispersion of nano-sized rare…
Q: Q3// Answer two only A) Within a cubic unit cell, sketch the following planes: (10 0J, (21 1) B)…
A: A).
Q: cm. The solidification time for this casting is 1. naual to 1 If the riser and ca
A:
Q: What is the critical value of G to avoid constitutional supercooling for the directional…
A: Solution: Given Data: v = 0.05 mm/s k = 0.14 m = -2.6oC/wt% D = 3X10-5 cm2/s C = 3 wt%
Q: 1)Construct the iron carbon diagram and label various regions and explain the various phase changes…
A:
Q: en might low quantities be justified for the die-casting process?
A: casting : it is a manufacturing process in which the liquid metal/ material is poured into the mould…
Q: The nucleation rate for a phase transformation depends on which factors? O Density O Yield Strength…
A:
Q: different types of temperature-composition phase diagrams for an exemplary liquid-solid system
A:
Q: cation to control solidification shrinkage, which is a major problem during liquefaction of solid…
A: As per our guideline we can answer only one question at a time so please post other question…
Q: b) What are the types of dissolving and solidification of thermal equilibrium diagrams? (Explain and…
A: b) TYPES OF…
Q: Calculate the solidification time (in minutes) of an alloy (AL-Si) with the following material data:…
A: According to the information for the solidification time, we have…
Step by step
Solved in 2 steps
- What is the critical value of G to avoid constitutional supercooling for the directional solidification of an Al-Cu alloy, containing 3 wt.% copper, at a rate of 0.05 mm/s? For these alloys, k = 0.14, m = -2.6oC/wt% and D = 3x10-5 cm 2 /s. Here G is the thermal gradient into the liquid phase, k is the partition coefficient of the alloy, and D is the diffusivity of solute in the liquid phase.Q) A graph of your temperature versus time cooling curve. Discuss the indicators of solidification initiation and termination and the implied alloy composition(s) I have provided with the grpah of the tmep vs time cooling curve and the phase diagram please answer the above question accordingly in paragrahpswhat are the stages of solidifaction in a casting process? when do those happen?what is under cooling?
- Chemistry is it possible to predict the metallic phases that may arise during the casting and solidification of any liquid metal (non ferrous metal) ?Draw two different types of temperature-composition phase diagrams for an exemplary liquid-solid system, show the important regions and explain the leverage rule on the diagram by deriving the relevant relations.. A round casting is 0.2 m in diameter and 1 m in length. Another casting of the same metal iselliptical in cross section, with a major-to-minor axis ratio of 2, and has the same length andcross sectional area as the round casting. Both pieces are cast under the same conditions.What is the difference in the solidification times of the two castings?
- Kindly explain the phases in detail3 Materials Science. From picture below.Describe in detail the phase transformations (showing cooling curves, corresponding optical backgrounds, etc.) that takes place during solidification of the following alloys:(a) 99% Cu - 1% Al(b) 96% Cu - 4% Al(c) 80% Cu - 20% AlOn the continuous growth, Calculate the interfacial undercooling if the melting temperature is 600 K and the latent heat of melting is given as 30 kJ/kg? (Assume the driving force for solidification as 45 kJ/kg?
- A liquid cast iron has a density of 7.65 g/cm3. Immediately after solidification, the density of the solid cast iron is found to be 7.71 g/cm3. Determine the percent volume change that occurs during solidification. Does the cast iron expand or contract during solidification?Based on the phase diagrams, estimate the solubilities of Ni, Zn, Al, Sn, andBe in copper at room temperature. Are these solubilities expected in view ofHume-Rothery’s conditions for solid solubility? ExplainIn a melting point phase diagram what do you mean by the eutectic point? How does this affect the obtained melting point range?