Characteristics of phase changes induced by ultra-precision raster milling at the surface layer of Zn-Al alloy

Shaojian Zhang, Suet To

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


Ultra-precision raster milling induces phase changes and crystal orientation changes of Zn-Al alloy at its machined surface up to a thickness of several hundreds of nanometers. In this study, the phase change characteristics of Zn-Al alloy at different penetration depths have been discussed using X-ray diffraction and nano-indentation tests. A phase-change-distribution function to depth has been proposed to calculate phase change thickness based on the X-ray diffraction measurement, which was verified by the nano-indentation tests. It is found that phase changes sharply decrease along the penetration depth and the Bragg angle first decreases and then increases back, less than the original value. Significantly, the proposed method is nondestructive to characterize phase change characteristics and measure phase change thickness.
Original languageEnglish
Pages (from-to)1480-1488
Number of pages9
JournalProceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
Issue number8
Publication statusPublished - 1 Aug 2016


  • nano-indentation
  • phase change
  • ultra-precision raster milling
  • X-ray diffraction

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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