Surface Integrity in Micromilling of Hardened AISI D2 Tool Steel

Juri Saedon, Sein Soo, David Aspinwall, A. Barnacle, Norhafiez Mohamad Nor

Research output: Contribution to journalArticlepeer-review


This paper presents workpiece surface integrity of micromilling hardened tool steel AISI D2. These include 3D mapping of surface texture, analysis of microstructure and microhardness variation. The results indicate no evidence of major surface damage such as microcracks, untempered/over-tempered martensite, phase transformations or white layer formation was detected in any of the specimens analysed. No discernible deformation of the material grain structure beneath
the machined surface was observed. This was mainly attributed to the comparatively low levels of mechanical force and temperatures generated during the micro milling operation.
Original languageEnglish
Pages (from-to)151-155
Number of pages5
JournalApplied Mechanics and Materials
Publication statusPublished - Sept 2015


  • Tool wear
  • microhardness
  • Surface roughness
  • microstructure


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