Structural features of the austempered ductile iron-PcBN cutting tool interaction interface as captured through static diffusion couple experiments

► Fe diffusion from ADI in TiC matrix of cBN-TiC composite and re-precipitation there ► Ti-N diffusion from cBN-TiC in ADI and re-precipitation there as Ti(CxN1-x)y ► Slight interaction of ADI with cBN grains relative to TiC matrix ► Ti diffusion from cBN-TiC in Si wafer and re-precipitation there as TiSi4-x ► Si diffusion from wafer in TiC matrix of cBN-TiC and re-precipitation there as SiC1-x