In this video slip mechanism are dislocation of half plans. As per the video you can show how slips actually occur that's consuming very lower energy. I hope you can able to get ideas 😃
Yes, it is expected to do so. There have been a few experiments of this kind. The difficulty of these experiments is that it is difficult to prepare samples without any dislocations. One such experiment was performed by S.S. Brenner of General Electric Company in 1956. He published his results in the Journal of Applied Physics. By the way, Schmid only stated that a critical resolved shear stress is required for plastic deformation. He did not estimate these values. This was done by Frenkel.
Sir in this diagram where is slip plane Imagine the paper is pasted in wall front of you. 1. Is it the horizontal plane parallel to floor 2. Or vertical plane perpendicular to paper(plane 1,2,3.... In the drawing) 3. Or perpendicular to both these planes. Thank you 3
Sir why it requires less energy to break bonds on at a time than all at one go?
Nice explanation
if our theoretically calculated value of CRSS is not experimentally valid then what will be CRSS value for dislocation movement?
Can someone write an explanation for this?
In this video slip mechanism are dislocation of half plans. As per the video you can show how slips actually occur that's consuming very lower energy. I hope you can able to get ideas 😃
Hi sir. If we take a defect or dislocation free crystal will it satisfy theoretical value of schmid during experiment?
Yes, it is expected to do so. There have been a few experiments of this kind. The difficulty of these experiments is that it is difficult to prepare samples without any dislocations. One such experiment was performed by S.S. Brenner of General Electric Company in 1956. He published his results in the Journal of Applied Physics.
By the way, Schmid only stated that a critical resolved shear stress is required for plastic deformation. He did not estimate these values. This was done by Frenkel.
nice
Sir in this diagram where is slip plane Imagine the paper is pasted in wall front of you.
1. Is it the horizontal plane parallel to floor
2. Or vertical plane perpendicular to paper(plane 1,2,3.... In the drawing)
3. Or perpendicular to both these planes.
Thank you
3
1. The horizontal plane parallel to the floor.
is the formula derived in earlier lecture for CRSS valid only for single crystal system?
Yes, it is derived for single crystal.
@@introductiontomaterialsscience @rajesh Prasad
Thank you sir for replying.
But sir,everytime we apply stress for slip, there will be dislocation. Then how can we achieve the theoretical crss value??
this was calculated for single crystal i.e. pure.
Amazing！！
Sir,then what is the mechanism of elastic deformation?Is it the same as plastic deformation?
In elastic deformation the atomic bonds are stretched or contracted. There is no slip involved.
Nice
Nice