Why is it that inorganic glasses form upon relatively slow cooling of melts, while rapid solidification is necessary to form metallic glasses?

Q: 1- Explain the main principle of the laser abolition phenomena to manufacture nanoparticles? 2- Give…

A: Given questions: Explain the main principle of laser ablation phenomena to manufacture…

Q: (b) What are the factors that affecting the freezing rate during solidification of the molten metal…

A: Chvorinov's rule: According to this law, the freezing rate (solidification time) is a function…

Q: Q1: For homogeneous nucleation of iron, calculate the activation free energy, critical radius and…

A: Given data: Here, ΔHf represents the latent heat of fusion, r represents the surface free energy, a…

Q: Determine the Miller Index of the given direction in an HCP crystal? Write the negative sign if the…

A:

Q: Explain why martensite is hard? What is the crystal structure of martensite? Show the positions of…

A: Martensite has a BCC(Body Centred Cubic) crystal structure. It has distorted BCC ferrite lattice…

Q: Sketch a phase diagram for two soluble components. Show the melting tem-perature of each element.…

A: The simplest type of phase diagram for any system can be of two components that are soluble in both…

Q: In a viscoelastic material, why does tan delta peak at the glass transition temperature?

A: Glass transition temperature it is the teperature at which carbon chain in viscoelastic material…

Q: The free space in a metal may be found by subtracting the volume of the atoms in a unit cell from…

A: There are basically three types of packing systems. These are as follows, Simple cubic system (SCS)…

Q: Explain how does the reduction of the grain size increase the strength of the single-phase metals?

A: Single phase metals are plastically deformed due to motion of dislocations in the grains. This…

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: Describe the behavior of crystal and amorphous solids when heated

A: Crystalline solids possess a sharper melting point ,ie it melts instantaneously at a fixed…

Q: Calculate the required weight of carbon necessary to obtain 12 ton of cast iron of the eutectic type…

A:

Q: Suppose you are asked to manufacture a critical component based on a nickel-based super-alloy. The…

A: GIVEN: Manufacture a critical component based on nickel based super alloy

Q: Define annealing. (a) What effects does it have on the microstructure? (b) How does this affect…

A: Annealing: Annealing is a heat treatment process used to increase the ductility and reduce the…

Q: Calculate Miller indices for the plane and directions

A: A: The miller index for A can be determined as,

Q: Draw the planes below with the miller indices. (101), (001), (100), (110), (011), (101)

A:

Q: Under what high temperature circumstances is a very small grain size detrimental, and under what…

A: The fine grain structure of a component can both be advantageous and detrimental in different…

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: How would I... Determine the composition of aluminum and silicon (%Al/%Si) to melt the Al-Si…

A: what you are looking for is the eutectic point in a eutectic reaction a liquid phase transforms into…

Q: Compare briefly between self-diffusion and interdiffusion concept.

A: Compare briefly between self-diffusion and interdiffusion concept.

Q: Why the volume change as low as 0.5 percent can cause grain fractures during phase transformation of…

A: Given data as per question volumetric change =0.5% Elastic modulus of ceramic =250 Gpa Poisson ratio…

Q: What tools can manipulate nanostructures?

A: Given Data : Nanostructures

Q: One of the most common production techniques for metallic implants is lost-wax casting. Discuss the…

A: Lost wax casting, also known as investment casting is a casting process that makes use of wax…

Q: a) Would you use the dry pressing method or the casting method to make a ceramic vase with a complex…

A: CASTING METHOD The casting process specifies the principal fill of the cast metal and/or the flow…

Q: Materials Science. From picture below.Describe in detail the phase transformations (showing cooling…

A: Solution: Given Data:

Q: The relation between dendrite arm spacing (X) and the solidification time (t) is given by X Al"

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: Indices of direction. If [hkl] are indices of a set of directions relative to lattice vectors a, as,…

A: Hedonism is a theory of values which states that pleasure is intrinsically valuable and pain is…

Q: During solidification process, ha OI. Nuclei, critical size, lattice O II. Nuclei, critical size,…

A: option II is correct. nuclei ,critical size , grain

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: Given that the expression for the equilibrium concentration of point defects are similar for pure…

A: Given ; that the expression for the equilibrium concentration of point defects are similar for pure…

Q: Derive the inte polation functions of the transition element shown in Fig. 1

A: We are asked to find the Interpolation function given diagram Interpolation function for…

Q: 4.a) For the solidification of iron, calculate the critical radius r* and the activation free energy…

A:

Q: When the lattice is statically determinated? Draw an example and explain

A: a statically determinate system can be defined as a system where, if it is possible to find internal…

Q: What are the Miller indices for plane A drawn in the sketch below?

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: Q3// Answer two only A) Within a cubic unit cell, sketch the following planes: (10 0J, (21 1) B)…

A: A).

Q: 8) The figure schematically shows the solidification stages of an ingot. What would you call the…

A: The dark region shown in the above solidification stage of an ingot depicts the region of high…

Q: The nucleation rate for a phase transformation depends on which factors? O Density O Yield Strength…

A:

Q: a- Calculate the size of the critical nucleus of tin (Sn) after it has been supercooled by 20 °C.…

A: as per our guidelines I solved 1st part only because both are not related  questions

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…

Q: A 30% ethylene glycol solution in water is gradually cooled. At what temperature in degree celsius…

A:

Q: 1) The correct plot between temperature and distance in the solid-liquid interface (solidification…

A: Answer: II graph second will up to the mark