Reviewing the Class of Al-rich Ti-Al Alloys: Modeling High Temperature Plastic Anisotropy and Asymmetry

Chowdhury, Helal; Naumenko, Konstantin; Krüger, Manja; Altenbach, Holm

doi:10.1186/s40759-017-0031-3

Journal Article

FZJ-2017-07966

Reviewing the Class of Al-rich Ti-Al Alloys: Modeling High Temperature Plastic Anisotropy and Asymmetry

Chowdhury, H. (Corresponding author) ; Altenbach, H. ; Krüger, M. (Corresponding author)FZJ* ; Naumenko, K.

2017
Springer Berlin

Mechanics of advanced materials and modern processes 3(1), 16 (2017) [10.1186/s40759-017-0031-3]

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Please use a persistent id in citations: http://hdl.handle.net/2128/16092 doi:10.1186/s40759-017-0031-3

Abstract: In the last decades, the class of Ti-rich TiAl-based intermetallic materials has replaced many contemporary alloys till 900 °C. Due to higher oxidation resistance, 20% lower density and higher (about 150 °C more) operating temperature possibility of Al-rich TiAl alloys over Ti-rich side, phases from the Al-rich region of this alloy system are considered to be highly potential candidates for high temperature structural applications. Although there are a lot of works about Ti-rich alloys, however, investigation from the Al-rich side is very limited. This work reviews the class of Al-rich TiAl alloys in terms of phases, microstructures, morphology, deformation mechanisms, mechanical behaviors along with a possible micromechanical modeling approach. Single crystal like Ti-61.8at.%Al alloy from the Al-rich family has been chosen as an example for modeling high temperature anisotropy and tension-compression asymmetry. A possible comparison with Ti-rich side is also presented.

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