Microstructural and Phase Analysis of an Additively Manufactured Intermetallic TiAl Alloy using Metallographic Techniques and High-Energy X-Rays

Malina Jop, Reinhold Wartbichler, Peter Staron, Emad Maawad, Svea Mayer, Helmut Clemens

Publikation: Beitrag in FachzeitschriftArtikelForschung

4 Zitate (Scopus)

Abstract

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.
OriginalspracheEnglisch
Seiten (von - bis)84-95
Seitenumfang12
FachzeitschriftPractical metallography = Praktische Metallographie
Jahrgang57.2020
Ausgabenummer2
DOIs
PublikationsstatusVeröffentlicht - 4 Feb. 2020

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