What is low angle boundary? - Material Science

Q.  What is meant by low angle boundary?
- Published on 06 Aug 15

a. Low angle boundary represents a boundary between crystalline region and its surroundings
b. Low angle boundary is a surface defect which has angular misorientation between the grains
c. Both a. and b.
d. None of the above

ANSWER: Low angle boundary is a surface defect which has angular misorientation between the grains

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    Discussion

  • Sravanthi   -Posted on 06 Oct 15
    - Defects occurring on surface of a material are called as surface defects. Different types of surface defects such as twin boundary, stacking fault, planer defect, volume defects, grain boundary, low angle boundary occur on material surfaces.

    - Low angle boundary surface defects occur when angular misorientation between the grains is less.

    - Boundary exhibited by grains of different orientations result in grain boundary defect. This type of defect arises when liquid metal gets into solid state.

    - The arrangement of atoms on one side of boundary is the mirror image of atoms arranged on another side results in twin boundary defect.

    - Stacking fault occurs when atoms are not stacked in a proper sequence throughout the crystal.

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