5 9. Make two neat sketches to show the climbing up and the climbing down of an edge dislocation. Whathappens to the vacancy concentration in the crystal during each process?

The motion of an edge dislocation normal to its slip plane is called climb. Diffusion methods are…

Answered: 9. Make two neat sketches to show the…

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter26: Welding Metallurgy

Section: Chapter Questions

Problem 33R

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Similar questions

Suppose you would like to introduce an interstitial and a large substitutional atom in the crystal near a dislocation.Would the atom fit more easily above or below the dislocation line?Explain.
question j620 Find the Miller indices of each crystallographic plane
DeterminetheMiller_lndex_0f the given direction in an HCP crystal? Write the negative sign if the index is negative
Identify the sources of dislocations in the developing crystal and mention the most important ways that contribute to increasing their numbers with a detailed explanation.
Which can cross-slip––an edge dislocation, a screw dislocation, or a mixed dislocation? Why?
Suppose you would like to introduce an interstitial or large substitutional atom into the crystal near a dislocation. Would the atom fit more easily above or below the dislocation line shown in Figure? Explain.
Explain the types of dislocations in a crystal structure with neat diagrams
Cite the relative Burgers vector–dislocation line orientations for edge, screw,and mixed dislocations.
Long Question：What are different types of lattice defects?Note: submit assignment in word format
more than one answer is possible for this question. Dislocation movement is facilitated by: a) Large number of slip planes b)Decreasing impurity atom concentration c) Decreasing grain size d)High angles of misalignment between grains
To put lattice defects in perspective, consider a metal blank that has a dislocation density of 10^3 mm^-2 suppose all the dislocations in 1000 mm^3 are linked together as a chain.How long will this chain be in km? Now suppose that dislocation density increases to (10^10) mm^-2 with cold deformation. How long will the chain be now?
Make all possible reactions between (perfect) dislocations in (11-1) and (1-1-1) in an FCC crystal. Among them, which ones are Lomer locks?

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9. Make two neat sketches to show the climbing up and the climbing down of an eage dislocalion. What happens to the vacancy concentration in the crystal during each process?