Microstructural and Phase Analysis of an Additively Manufactured Intermetallic TiAl Alloy using Metallographic Techniques and High-Energy X-Rays
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In: Practical metallography = Praktische Metallographie, Vol. 57.2020, No. 2, 04.02.2020, p. 84-95.
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TY - JOUR
T1 - Microstructural and Phase Analysis of an Additively Manufactured Intermetallic TiAl Alloy using Metallographic Techniques and High-Energy X-Rays
AU - Jop, Malina
AU - Wartbichler, Reinhold
AU - Staron, Peter
AU - Maawad, Emad
AU - Mayer, Svea
AU - Clemens, Helmut
N1 - Publisher Copyright: © Carl Hanser Verlag GmbH & Co. KG.
PY - 2020/2/4
Y1 - 2020/2/4
N2 - Due to the unique combination of low density and their excellent properties-profile at elevated temperatures, intermetallic γ-titanium aluminide based alloys are a promising structural material for applications in aviation and the automotive industry. Additive manufacturing of a TiAl alloy of nominal composition Ti-48Al-2Cr-2Nb (in at. %), using electron beam melting, resulted in a banded and anisotropic microstructure. In this work, the present microstructure was examined by means of visible light and scanning electron microscopy with regard to morphology and phase distribution. Furthermore, a three-dimensional representation of the microstructure was generated based on differently oriented metallographic specimens. Phase analysis was performed using high-energy X-ray diffraction in order to quantitatively determine present phase fractions and to relate them to findings from microstructural analysis.
AB - Due to the unique combination of low density and their excellent properties-profile at elevated temperatures, intermetallic γ-titanium aluminide based alloys are a promising structural material for applications in aviation and the automotive industry. Additive manufacturing of a TiAl alloy of nominal composition Ti-48Al-2Cr-2Nb (in at. %), using electron beam melting, resulted in a banded and anisotropic microstructure. In this work, the present microstructure was examined by means of visible light and scanning electron microscopy with regard to morphology and phase distribution. Furthermore, a three-dimensional representation of the microstructure was generated based on differently oriented metallographic specimens. Phase analysis was performed using high-energy X-ray diffraction in order to quantitatively determine present phase fractions and to relate them to findings from microstructural analysis.
UR - http://www.scopus.com/inward/record.url?scp=85084933526&partnerID=8YFLogxK
U2 - 10.3139/147.110611
DO - 10.3139/147.110611
M3 - Article
VL - 57.2020
SP - 84
EP - 95
JO - Practical metallography = Praktische Metallographie
JF - Practical metallography = Praktische Metallographie
SN - 0032-678X
IS - 2
ER -
