Electron beam melting of a β-solidifying intermetallic titanium aluminide alloy

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

Abstract

The structural features of an electron-beam-melted titanium aluminide alloy are presented. The microstructure consisting of γ-TiAl, α 2-Ti 3Al, and β o-TiAl reveals inhomogeneous phase and Al distributions, which are quantified by electron probe microanalysis. Electron backscatter diffraction is utilized to indicate a solidification via the β-phase preferably along the <001> direction, resulting in a {001} βo fiber texture parallel to the building direction. These findings are correlated to a calculated isopleth section of the Ti-Al-Nb-Mo system and the corresponding phase fraction diagram. The investigated β-solidifying γ-TiAl-based alloy, therefore, combines both the characteristics of electron-beam-melted Ti and TiAl alloys.

Details

OriginalspracheEnglisch
Aufsatznummer1900800
FachzeitschriftAdvanced Engineering Materials
Jahrgang21
Ausgabenummer12
DOIs
StatusVeröffentlicht - 1 Dez 2019