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The extended dislocation formed on the basal plane of Hexagonal closed packed structure are sessile dislocation.

The extended dislocation formed on the basal plane of Hexagonal closed packed structure are sessile dislocation. Correct Answer False

Dislocations in the basal plane can reduce their energy by dissociating into Shockley partials according to the reaction. (a0/3) → (a0/3) + (a0/3) The stacking fault produced by this reaction lies in the basal plane, and the extended dislocation which forms it is confined to glide in this plane.

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The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. If Z is open, which of the following must be true?
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An elliptical dislocation loop is gliding on plane ABCD of a single crystal of BCC material as shown in the following figure. It is gliding along the burger vector 'b'. Identify the correct statement.
Physics of Metals in Metallurgy mcq question image
P. Plane ABCD belongs to the family of (110).
Q. Burger vector 'b' belong to direction.
R. Dislocation has the edge character at point x and the screw character at point z.
S. Dislocation has the screw character at point x
Which of the following metals has a Hexagonal closed packed structure?