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Nucleation on dislocations may also be assisted by solute segregation which can raise the composition of the matrix to nearer that of the precipitate.

Nucleation on dislocations may also be assisted by solute segregation which can raise the composition of the matrix to nearer that of the precipitate. Correct Answer True

Nucleation on dislocations may also be assisted by solute segregation which can raise the composition of the matrix to nearer that of the precipitate. The dislocation can also assist in growth of an embryo beyond the critical size by providing a diffusion pipe with a lower ΔG(migration).

Related Questions

Which of the following statements are true about edge dislocations?
P. Edge dislocations do not have an extra half plane associated with them.
Q. The Burger vectors is perpendicular to the direction.
R. Edge dislocations can avoid obstacles by cross-slip.
S. Depending on geometry, parallel edge dislocations of opposite signs can attract or repel one another.
Consider the following pattern of numbers: \(\dfrac{\begin{matrix} 8 \\\ 6 \ \\\ 4 \ \end{matrix}}{ \ 6} \ \ \dfrac{\begin{matrix} 10 \\\ 5 \ \\\ 6 \ \end{matrix}}{ \ 11} \ \ \dfrac{\begin{matrix} 15 \\\ 7 \ \\\ 8 \ \end{matrix}}{ \ 16} \ \ \dfrac{\begin{matrix} 13 \\\ 4 \ \\\ 8 \ \end{matrix}}{ \ ?}\) What is the number at ? in the above pattern?
Consider the following statements regarding homogenous coordinate transformation matrix: 1. A homogenous transformation matrix can be considered to consist of four sub-matrices. 2. The upper left 3 × 3 sub-matrix represents the position vector. 3. The upper right 3 × 1 sub-matrix represents the rotation matrix. 4. The lower left 1 × 3 sub-matrix represents perspective transformation. Which of the above statements are correct? 
The method of detecting dislocations by forming a visible precipitate along the dislocation lines is known as ____________ the small amount of impurity is intensely added to form the precipitate after heat treatment.
A trade war is an economic conflict resulting from extreme protectionism in which states raise or create tariffs or other trade barriers against each other in response to trade barriers created by the other party. Increased protection causes both nations' output compositions to move towards their autarky position. Some economists agree that certain economic protections are more costly than others, because they may be more likely to trigger a trade war. For example, if a country were to raise tariffs, then a second country in retaliation may similarly raise tariffs. An increase in subsidies, however, may be difficult to retaliate against by a foreign country. (Wikipedia) What can be inferred from the above paragraph?
Screw dislocations with jogs are __________ mobile than edge dislocations. Screw dislocations without jog move __________ from one plane to another than edge dislocation.
At very small driving forces, when activation energy barriers for nucleation are high, the highest nucleation rates will be produced by grain corner nucleation.
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A word is represented by only set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as shown in the given two matrices. The columns and rows of Matrix-I are number alternatives are represented by two classes of alphabets as shown in the given two matrices. The columns and rows of Matrix-I are numbered from 0 to 4 and that of Matrix-II are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, for example ‘T’ can be represented by 02, 98 etc and ‘E’ can be represented by 12, 59, 97 etc. Similarly, you have to identify the set for the word ‘FAMILY’.  Matrix I    Matrix II   0 1 2 3 4   5 6 7 8 9 0 I M T K G 5 O C M R E 1 O R E Z X 6 J S F W Y 2 A G W U N 7 P I V N G 3 Q S L A H 8 L U B K W 4 J F V P B 9 H Q E T D
A word is represented by only set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as shown in the given two matrices. The columns and rows of Matrix-I are number alternatives are represented by two classes of alphabets as shown in the given two matrices. The columns and rows of Matrix-I are numbered from 0 to 4 and that of Matrix-II are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, for example ‘K’ can be represented by 43, 89 etc and ‘F’ can be represented by 14, 78 etc. Similarly, you have to identify the set for the word ‘SAMPLE’.  Matrix I    Matrix II   0 1 2 3 4   5 6 7 8 9 0 D L H O A 5 E P V J C 1 E B R L F 6 M T W R S 2 V Q W S J 7 A H O F R 3 G A P D M 8 Q R L A K 4 S N I K C 9 G B I N D