Oxidation and crystallization of Zr-based bulk metallic glass due to machining

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Mustafa Bakkal
  • Chain T. Liu
  • Thomas R. Watkins
  • Ronald O. Scattergood
  • Albert J. Shih

Detail(s)

Original languageEnglish
Pages (from-to)195-204
Journal / PublicationIntermetallics
Volume12
Issue number2
Publication statusPublished - Feb 2004
Externally publishedYes

Abstract

Bulk metallic glass was subjected to extreme deformation conditions during machining operation. The flash temperature, oxidation and crystallization within chips from a Zr-based bulk metallic glass were investigated. A near-infrared spectrometer was used to capture the light emission from the tool-chip interface allowing the calculation of the temperature. Very high temperatures in the 2400-2700 K range were observed and associated with the light emission and oxidation in the chips. X-ray diffraction analysis revealed oxidation of chips machined at high cutting speeds. Optical micrographs of polished and etched chip cross-sections showed a dendritic pattern due to crystallization. Using a field emission gun SEM, amorphous and crystalline regions were analyzed. This study demonstrates the oxidation and crystallization of bulk metallic glass during machining. © 2003 Elsevier Ltd. All rights reserved.

Research Area(s)

  • B. Metallic glasses, B. Oxidation, C. Machining, F. Scanning, F. X-ray diffraction

Citation Format(s)

Oxidation and crystallization of Zr-based bulk metallic glass due to machining. / Bakkal, Mustafa; Liu, Chain T.; Watkins, Thomas R.; Scattergood, Ronald O.; Shih, Albert J.

In: Intermetallics, Vol. 12, No. 2, 02.2004, p. 195-204.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review