Metallographic structure effects on the machined surface integrity in micro-machining with Al 6061-T6

Xiao Ding, D. L. Butler, L. C. Lee, Y. C. Liu, K. C. Shaw, H. Y. Zheng

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

A study was carried out to investigate the machined surface integrity of Al 6061-T6 by using a single crystalline diamond (SCD) micro-tool with a 5-axis ultraprecision freeform generator. The micro-size tools used in this study which have a cutting contact length of around 30 μm on the primary clearance face were fabricated by a focused ion beam (FIB). It was found that changing the crystallographic orientation results in a variation in the machined surface integrity. Hard and brittle particles in the soft alloy matrix play an important role in the generation of the voids on the machined surface. Decreasing the cross-feed rate will help reduce the effects of crystallographic orientation and the influence of hard particles on the machined surface. This study contributes to a better understanding of the physics of mechanical machining with micro-tools.

Original languageEnglish
Title of host publicationProceedings of the 24th Annual Meeting of the American Society for Precision Engineering, ASPE 2009
Place of PublicationRaleigh
Number of pages4
Publication statusPublished - 7 Dec 2009
Externally publishedYes
Event24th Annual Meeting of the American Society for Precision Engineering, ASPE 2009 - Monterey, CA, United States
Duration: 4 Oct 20099 Oct 2009

Conference

Conference24th Annual Meeting of the American Society for Precision Engineering, ASPE 2009
CountryUnited States
CityMonterey, CA
Period4/10/099/10/09

Keywords

  • ductile-regime machining
  • machined surface finish
  • micro-size diamond tool
  • micromachining

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    Ding, X., Butler, D. L., Lee, L. C., Liu, Y. C., Shaw, K. C., & Zheng, H. Y. (2009). Metallographic structure effects on the machined surface integrity in micro-machining with Al 6061-T6. In Proceedings of the 24th Annual Meeting of the American Society for Precision Engineering, ASPE 2009 Raleigh.