Journal Article

PUBDB-2021-00852

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Thermal Expansion of a Multiphase Intermetallic Ti-Al-Nb-Mo Alloy Studied by High-Energy X-ray Diffraction

Staron, P. (Corresponding author)HZG* ; Stark, A.Extern*HZG* ; Schell, N.HZG* ; Spoerk-Erdely, P.Extern* ; Clemens, H.Extern*

2021
MDPI Basel

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Please use a persistent id in citations: doi:10.3390/ma14040727  doi:10.3204/PUBDB-2021-00852

Abstract: Intermetallic -TiAl-based alloys are lightweight materials for high-temperature applications,e.g., in the aerospace and automotive industries. They can replace much heavier Ni-basedalloys at operating temperatures up to 750 C. Advanced variants of this alloy class enable processingroutes that include hot forming. These alloys consist of three relevant crystallographic phases ($\gamma$-TiAl,$\alpha_2$-Ti$_3$Al, $\beta_o$-TiAl) that transform into each other at different temperatures. For thermo-mechanicaltreatments as well as for adjusting alloy properties required under service conditions, the knowledgeof the thermal expansion behavior of these phases is important. Therefore, thermal expansion coefficientswere determined for the relevant phases in a Ti-Al-Nb-Mo alloy for temperatures up to1100 C using high-energy X-ray diffraction.

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Contributing Institute(s):

1. Zentrum für Material- und Küstenforschung (HZG)
2. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P07 (PETRA III)

Appears in the scientific report 2021

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