Metastable orthorhombic phases at ambient pressure in mechanically milled pure Ti and Ti-Mg

X. S. Wei, W. Xu, K. Xia*

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Nanocrystalline Ti and Ti-20 at.% Mg produced by mechanical milling were characterized using nanobeam diffraction. Metastable ω (hexagonal) and γ (orthorhombic) phases were observed in the pure Ti, while γ, a new orthorhombic ε phase and a face-centred cubic (fcc) phase were identified in the Ti-Mg. γ, found so far only at high pressures, was produced by a combination of high impact pressure and shear stress during milling. The forced dissolution of Mg caused the formation of the ε and fcc phases.

Original languageEnglish
Pages (from-to)32-35
Number of pages4
JournalScripta Materialia
Volume93
DOIs
Publication statusPublished - 15 Dec 2014
Externally publishedYes

Keywords

  • Immiscible alloys
  • Magnesium
  • Mechanical alloying
  • Metastable phases
  • Titanium alloys

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