Wire electric discharge machining induced titanium hydride in Ti-46Al-2Cr alloy

G. W. Qin, K. Oikawa, G. D.W. Smith, S. M. Hao

研究成果: Article査読

9 被引用数 (Scopus)

抄録

Wire electric discharge machining (Wire-EDM) induced a new phase in Ti-46Al-2Cr (in at.%) intermetallic alloy has been identified by using X-ray diffraction technique. The new phase is found to be neither TiO2 nor Al2O3, but well consistent with fcc structure titanium hydride with the lattice parameter of 4.49-4.50 Å. The new phase exists in the wire-EDM cut alloy surface layer limiting to about 70 μm thick, much deeper than the wire-EDM induced recast layer thickness of 2-3 μm. One processing, vacuum annealing at 400-600 °C, has been proposed to remove this hydride induced by wire-EDM. In addition, The wire-EDM induced microcracks extensively happen on the EDM-cut surface and penetrate into matrix up to 10-30 μm.

本文言語English
ページ(範囲)907-910
ページ数4
ジャーナルIntermetallics
11
9
DOI
出版ステータスPublished - 2003 9 1
外部発表はい

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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