Crystallization and carbonization of an electrical discharge machined Zr-based bulk metallic glass alloy

Shy Feng Hsieh, Sung Long Chen, Ming Hong Lin, Shih Fu Ou, Wei Ting Lin, Mao Suan Huang

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This study investigated the microstructure and machining characteristics of a Zr38.5Ti16.5Cu15.25Ni9.75Be20 bulk metallic glass (Zr-BMG) alloy machined using electro-discharge machining (EDM). After EDM, the hardening effect near the outer surface of the electro-discharge machined (EDMed) Zr-BMG alloy originated from the surface carbides of the recast layer, ZrC and TiC. The thickness of the recast layer, crater size, and the surface roughness increased with greater pulse energy. Furthermore, the EDM can generate a porous recast layer and convert the Zr-BMG alloy surface into a carbide surface, which is a potential method to fabricate biomaterials. Experimental results also show that the material removal rate of this alloy in the EDM process was significantly related to the pulse current I P and pulse duration τP. Many electro-discharge craters and recast materials were observed on the surface of the EDMed Zr-BMG alloy. The surface roughness of the EDMed Zr-BMG alloy was found to obey the empirical equation of R a = β(I P × τP) α.

Original languageEnglish
Pages (from-to)3177-3184
Number of pages8
JournalJournal of Materials Research
Volume28
Issue number22
DOIs
Publication statusPublished - Nov 28 2013

Fingerprint

carbonization
Carbonization
Metallic glass
metallic glasses
Crystallization
Electric discharge machining
machining
crystallization
Carbides
Surface roughness
craters
carbides
surface roughness
Biocompatible Materials
Biomaterials
Hardening
Machining
pulses
hardening
Microstructure

Keywords

  • microstructure
  • Zr

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics

Cite this

Crystallization and carbonization of an electrical discharge machined Zr-based bulk metallic glass alloy. / Hsieh, Shy Feng; Chen, Sung Long; Lin, Ming Hong; Ou, Shih Fu; Lin, Wei Ting; Huang, Mao Suan.

In: Journal of Materials Research, Vol. 28, No. 22, 28.11.2013, p. 3177-3184.

Research output: Contribution to journalArticle

Hsieh, Shy Feng ; Chen, Sung Long ; Lin, Ming Hong ; Ou, Shih Fu ; Lin, Wei Ting ; Huang, Mao Suan. / Crystallization and carbonization of an electrical discharge machined Zr-based bulk metallic glass alloy. In: Journal of Materials Research. 2013 ; Vol. 28, No. 22. pp. 3177-3184.
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