Draw a Burgers circuit around the dislocation shown in Figure 4-21. Clearly indicate the Burgers vector that you find. What type of dislocation is this? In what direction will the dislocation move due to the applied shear stress t ? Reference your answers to the coordinate axes shown

Q: Determine the index for the direction BA and the Miller index for the plane ABC shown on the right…

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Q: 6. Sketch how two edge dislocations of opposite sign on the same slip plane can anihilate each othe…

A: Given Edge dislocation To find Figure to explain the phenomenon Two edge dislocation of opposite…

Q: A piece of BCC single-crystal metal is oriented such that tensile stress is applied along a [131]…

A: Write the direction of the tensile stress.   A=131   Write the plane on which slip occurs.   B'=011…

Q: a. b. Figure 2 shows another ball-and-stick model of a very small crystal of a- Polonium, but this…

A: Given: To find: Number of bonds broken to move by slip by one unit of b from left to right

Q: If a rod of single-crystal copper (FCC) is pulled in tension in the [210] direction (i.e. force…

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Q: (1) Compute the dislocation density in tungsten if the flow stress is controlled by the stress…

A: Since all the questions are different, according to our guidelines, we are supposed to answer 1st…

Q: Consider a screw dislocation with Burgers vector of b=a/2[011] in (111) plane of an FCC crystal.…

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Q: Burgers vector (using vector notation) of a screw dislocation that can cross-slip between (111) and…

A: To draw and identify the Burger vectors of a screw dislocation between (111)

Q: Consider dislocations in nickel. If the plastic flow stress is controlled by the stress necessary to…

A: The dislocation density of an element from the resolved shear stress on the slip plane can be…

Q: Calculate the dislocation density in tungsten if the stress is controlled by the stress necessary to…

A: Given:To determine:The dislocation density in tugsten

Q: Please show how the value of b was calculated Calculate the dislocation density in tungsten if the…

A: The already calculated solution for the given problem is as below.The expression for the dislocation…

Q: edge dislocation occurs due to regions of.. * O shear stress O extra atoms regions O vibration…

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Q: Explain the following, using dislocation theory: metal strengthening by: (a) grain size (b) solid…

A: Dislocation theory plays a crucial role in understanding various mechanisms of metal strengthening.…

Q: Determine the Interplanar spacing and the length of the Burgers vector for slip on the preferred…

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Q: The diagram below shows a microscopic metal rod with a single crystal structure whose orientation is…

A: To calculate the shear stress along the close-packed direction of the microscopic metal rod, we need…

Q: 5. Consider a single crystal of some hypothetical metal that has the FCC crystal structure and is…

A: The solution is provided below.

Q: Calculate the critical resolved shear stress (magnitude) in crystal if a stress of 100 MPa in the SP…

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Q: Sketch following modes of dislocation motion and name conditions that help them occur: 1. Cross slip…

A: Cross slip Cross slip is the process by which a screw dislocation can move from one slip plane to…

Q: Sketch: a. 3 stages of single crystal stress-strain curve under uniaxial stress b. Frank-Reed…

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Q: Problem 1 out of 2: A single crystal of a metal that has the BCC crystal structure is oriented such…

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Q: Explain the following microstructures: -Lamellar  -Bimodal -Equiaxed

A: To explain: a) Lamellar b) Bimodal c) Equiaxed

Q: The flow stress for an alloy is 115 Mpa when its dislocation density is 10^6 cm^-2 and 207 Mpa when…

A: Ans Given Now using the equation  where  and  are constants for a given material.Now put  and  in…

Q: (a) (b) (2) (8) (3) (15) k(4,6) ji(4,6) k(-1,3)- j(8,2) i(6,2) i(1,1 (c) (d)

A: (a)         here ,N1=L-XL               =6-X6     ⇒N2=XL                =X6

Q: An external load caused tensile stress is imposed along the [001] of a BCC single crystal. The…

A: Solution: Given Data: [001] directionBCC crystal   To Find: The angle between the direction of…

Crystalline Imperfections

The crystalline imperfections are described as the geometrical defects in the crystal due to incorrect arrangement of atoms, impurity, vacancy, and many more. It is not possible to achieve a perfect or ideal crystal, practically.