Study on recast phenomenon in processing of micro-hole with millisecond laser

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Abstract

The experiments of micro-hole ablation are conducted firstly on titanium alloy Ti-6Al-4V with Nd: YAG millisecond laser. A significant factor which affects the depth of blind hole is found: the depth of recast material. This paper closely examines the regularity of recast depth varying with laser parameters, discovering that the ratio of recast depth to the entire hole depth decreases as pulse width decreases, and increases as peak power decreases. Verification experiment is conducted on stainless steel 1Cr13, eventually micro-hole with very thin recast layer is drilled when the maximum peak power and the minimum pulse width of the present millisecond laser are used.

Original languageEnglish
Title of host publicationIISME2012
Pages315-319
Number of pages5
DOIs
StatePublished - 2012
Event2012 2nd International Conference on Industry, Information System and Material Engineering, IISME 2012 - Wuhan, China
Duration: 17 Mar 201218 Mar 2012

Publication series

NameAdvanced Materials Research
Volume459
ISSN (Print)1022-6680

Conference

Conference2012 2nd International Conference on Industry, Information System and Material Engineering, IISME 2012
Country/TerritoryChina
CityWuhan
Period17/03/1218/03/12

Keywords

  • Micro-hole ablation
  • Nd: YAG millisecond laser
  • Peak power
  • Pulse width
  • Recast depth

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