Notices
Results 1 to 2 of 2

Thread: What affects the critical resolved shear stress

  1. #1 What affects the critical resolved shear stress 
    Forum Sophomore
    Join Date
    Sep 2008
    Posts
    128
    Critical resolved shear stress is an important factor to the deformation of materials.
    The numerical value of crss determines the deform mechanism and the ductility of materials.
    Could tell me what affects crss itself?
    Is there some generalized theory which can explain the influence?
    Thank you.


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Ph.D.
    Join Date
    Jan 2009
    Posts
    951
    Critical resolved shear stress is the component of shear stress, resolved in the direction of slip, necessary to initiate slip in a grain. It is a constant for a given crystal.

    Tests have been conducted on single crystals of metals to measure the shear stress required to initiate plastic deformation, or cause atomic planes to slip. Since this is a threshold value, it is referred to as critical; and since it is a component of the applied force or stress, it is said to be resolved; that is, the critical resolved shear stress.

    Resolved shear stress is given by τ = σ cos Φ cos λ[1] where σ is the magnitude of the applied tensile stress, Φ is the angle between the normal of the slip plane and the direction of the applied force and λ is the angle between the slip plane direction and the direction of the applied force.

    google is your friend


    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •