In the Ni-base superalloys used to make turbine blades, which of the following statements are true? Select one or more: a. There are two types of phases, with essentially identical crystalline arrangement and same strength b. There is an atom at each corner of each cube face and one in the centre of each cube face ☐ c. The underlying atomic structure is a cubic crystalline type d. An atom is present only at each corner of each cube face O e. There are two types of phases, with essentially identical crystalline arrangement and different strength There are two types of phases, with very different crystalline arrangement and different strength Of.

Determine the Miller- Bravais indices

please answer all the parts to questions clearly from a-c

Scandium (Sc) has the FCC crystal structure. The atomic radius is R = 0.16 nm and the atomic mass is M = %3D 44.96 g/mole. What is the density of Scandium in g/cm3? Given: Avogadro's Number NA = 0.6023 × 1024 (atoms/mole) %3D Select one: a. 12.14 b. 5.30 c. 12.55 d, 3.22 e. 6.77

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The Iron-Carbon system: Phase Diagram 1. You heat treated a 1045 steel plate by heating it to 900°C and slowly cooling it to 725 °C, which is below the eutectoid temperature. What phases are present at 725°C? What are the compositions of each phase at 725°C?  What are the weight fractions of each phase at 725°C?  What microconstituents are present at 725°C? What are the compositions of each microconstituent at 725°C? What are the weight fractions of each microconstituent at 725°C?

1 Al-Li Aerospace Alloys When a small amount of Li is added into Al to create an Al-Li alloy, the two elements typically do not mix homogeneously. Instead, most of the material is nearly-pure Al, while some small regions are Li-rich.¹ (These small regions are called precipitates and they are responsible for giving Al-Li alloys much better properties for aerospace applications relative to pure Al. We'll learn more about the alloying process and about precipitates later in the course.) The Li-rich regions have the chemical formula Al3Li and belong to the cubic crystal system.² In the unit cell, the Li atoms are located at 000, while the Al atoms are located at 110, 101, and 01121. (a) Draw the unit cell of Al3Li. (b) Which of the crystal structures from Callister Chapter 3 does this resemble? Why do we not call it that structure? (c) Given that the lattice parameter is 0.401 nm, what is the density of Al3Li?

Cite the phases that are present and the phase compositions for the following alloys: 15 wt% Sn–85 wt% Pb at 100°C

Project 4: a) Discuss the properties that related to FCC metals and compare it with SC and BCC structure. b) Compare between simple cubic cell (SC), body-centred cubic cell (BCC), face-centred cubic cell (FCC) and hexagonal close-packed cell (HCP) from all aspect Such as; the relation between a and R, and give some examples for each of them. c) Make a prototype for each one of them.

In Figure 1 (phase diagram), an alloy composition of 95 wt% Mg and 5 wt% Al is cooled from 700 C to 475 C. An analysis of the resulting ε solid-phase composition reveals that it has a higher Mg content than is anticipated by the phase diagram.a) Explain why this might be the case and how your reasoning results in the higher-than-expected Mg content.b) Provide a sketch showing the likely distribution of Mg content within the volume of ε solid-phase.