Table of Contents
- 1 What happens in the material at atomic level during elastic and plastic deformation?
- 2 What happens to atoms during plastic deformation?
- 3 What is the mechanism behind the elastic and plastic deformation of metals?
- 4 What is the difference between elastic and plastic deformation?
- 5 What is elastic deformation and plastic deformation of material?
- 6 What happens to a material during ductile deformation?
What happens in the material at atomic level during elastic and plastic deformation?
In other words, elastic deformation is a change in shape of a material at low stress that is recoverable after the stress is removed. This type of deformation involves stretching of the bonds, but the atoms do not slip past each other.
What happens to atoms during plastic deformation?
Plastic deformation of a metal occurs by slipping of atoms on specific planes of a crystal. This slipping of atoms does not occur at any one time over the entire crystal plane. In fact, it occurs by the movement of linear lattice defects called dislocations.
What occurs during elastic deformation?
Elastic deformation involves the temporary stretching or bending of bonds between atoms. For example, when bending a steel sheet, the bonds are bent or stretched only a few percent but the atoms do not slip past each other. Elastic deformation can be caused by applying shear forces or tension / compression stress.
What is the mechanism behind the elastic and plastic deformation of metals?
Slip is the prominent mechanism of plastic deformation in metals. It involves sliding of blocks of crystal over one other along definite crystallographic planes, called slip planes. it is analogous to a deck of cards when it is pushed from one end. Slip occurs when shear stress applied exceeds a critical value.
What is the difference between elastic and plastic deformation?
When energy goes into changing the shape of some material and it stays changed, that is said to be plastic deformation. When the material goes back to its original form, that’s elastic deformation. If more force or pressure is applied, then they have plastic deformation.
What determines the modulus of a material on an atomic scale?
Two mechanical properties, elastic modulus, and hardness, can be determined by nanoindentation. The elastic modulus is an intrinsic property of a material. At a fundamental level, E is a measure of the bond strength between atoms. The greater the modulus, the stiffer the material and the smaller the strain.
What is elastic deformation and plastic deformation of material?
When energy goes into changing the shape of some material and it stays changed, that is said to be plastic deformation. When the material goes back to its original form, that’s elastic deformation. Mechanical energy is lost whenever an object undergoes plastic deformation.
What happens to a material during ductile deformation?
Ductile deformation indicates shape change of a material through bending or flowing during which chemical bonds may become broken but subsequently reformed into new bonds.