Stresses along different planes in polycrystalline materials

[Srivathsan123]

A polycrystalline material is made up of many grains and grain boundaries. Each grain consists of lattices in different planes and hence different slip planes. Is that why we find stresses on different planes using mohrs circle(or analytically) even in a uniaxial tensile test.

 

[Arjan82]

No.

Does Mohr's circle contain any information about the crystalline structure of the material? How would it know then? Would Mohr's circle work for perfectly homogenous material?

The stresses are different in different planes because stress is a tensor.