Deformation mechanisms at high temperature Cross slip of screw dislocations Climb of an Edge Dislocation Diffusion Creep Grain Boundary sliding Deformation mechanism map
Thank a lot Sir making this difficult topic is like " Piece of Cake " for us...Hats off to your teaching it is indeed paving my way in my teaching profession..
Thank you Sir for making these videos. I have a doubt, why all these creep mechanisms appear more like temperature-dependent mechanisms instead of "time" dependent mechanisms as suggested by creep definition?
This is indeed a good question. I have used a simpler form of mechanism map by M.F. Ashby. This was first proposed by him in M.F. Ashby, "A First Report on Deformation Mechanism Maps", Acta Metallurgica, Vol 20, Issue 7, July 1972, Pages 887-897. This is also described in his book. This is also described in his book M.F. Ashby and DRH Jones, Engineering Materials: An Introduction to Their Properties and Applications. However, he has not included GBS in his figure. I simply followed him because I did not pay attention to. Your question forced me to look up literature where I find that, later, other workers have proposed maps that include GBS: H. Luthy, R.A. White and O. D. Sherby, "Grain Boundary Sliding and Deformation Mechanism Maps", Materials Science and Engineering, Volume 39, 1979, 211-216. Thanks for asking.
Sir, why does dislocation bowing not taking place here ie kindly tell that when does cross slip takes place or climb takes place and when dislocation bowing takes place #Rajesh Prasad introduction to material science and Engineering
@@rajeshprasadlectures one last request sir kindly make course on topic like welding or metal cutting and machining, so that underprivileged students like me , who are preparing for various exams like ese get benefitted, in the same way as material science Thanks a lot sir.
