TY - JOUR

T1 - Electron beam melting of a β-solidifying intermetallic titanium aluminide alloy

AU - Wartbichler, Reinhold

AU - Clemens, Helmut

AU - Mayer, Svea

PY - 2019/12/1

Y1 - 2019/12/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85074793494&partnerID=8YFLogxK

U2 - 10.1002/adem.201900800

DO - 10.1002/adem.201900800

M3 - Article

VL - 21.2019

JO - Advanced engineering materials

JF - Advanced engineering materials

SN - 1527-2648

IS - 12

M1 - 1900800

ER -