On the Excess Shear Modulus in Relating to Martensitic Transformation in Steel

Abstract

  In order to verify the concept of “excess shear modulus” in steel, experiment of measuring shear modulus during phase transformation and first principal calculation of shear modulus were presented. The experimental results supported the concept of “excess shear energy” and its relation to martensitic transformation. The first principle calculation of Bain curve clearly showed the large effect of carbon on the shear modulus of steel.