7/23/2019 Best Answer Slip Nd Twin

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Best Answer:The major differences between deformation by slip and deformation by twinning are

- Slip occurs when the shear stress exceeds a critical value. Blocks of the crystal slide over one another

along slip planes. The atoms moves an integral number of atomic distances along slip planes.

Twinning results when a portion of the crystal takes up an orientation that is related to the orientation ofthe untwinned latice in a definite, symmetrical way. The twin portion of the crystal is a mirror image of the

parent crystal. Twin may be produced by mechanical deformation or as the result of annealing following

plastic deformation.

- Slip is usually considered to occur in discrete multiples of the atomic spacings, while in twinning the

atom movements are much less than an atomic distance.

- In slip, the orientation of the crystal above and below the slip plane is the same after deformation as

before, while twinning results in an orientation difference across the twin plane.

- Slip occurs on relatively widely spread planes, but in the twinned region of a crystal every atomic plane

is involved in the deformation,

Source(s):http://answers.yahoo.com/question/index?qid=20081118234224AAYCBrN

Saranya 3 years ago

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in slip:-orientation of atoms remains the same

displacement takes place in exact atomic spacing

in twinning:-reorientation of atomic direction across twin plane

atomic displacement is less than inter atomic spacing

kbrom 7 months ago

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