Phase Transformations and Recrystallization Processes During Synthesis, Processing and Service of TiAl Alloys

  • Appel F
N/ACitations
Citations of this article
9Readers
Mendeley users who have this article in their library.

Abstract

Titanium aluminides alloys based on the intermetallic phases ?2(Ti3Al) and ?(TiAl) are one of the few classes of emerging materials that have the potential for innovative applications in advanced energy conversion systems whenever low density, good high-temperature strength and resistance against ignition and corrosion are of major concern [1]. The outstanding thermo-physical properties of the individual phases mainly result from the highly ordered nature and directional bonding of the compounds. However, two-phase ?2(Ti3Al)+?(TiAl) alloys exhibit a much better mechanical performance than their monolithic constituents ?(TiAl) and ?2(Ti3Al), provided that the phase distribution and grain size are suitably controlled. The synergistic effects of the two phases are undoubtedly associated with the many influences that the microstructure has on deformation and fracture processes. Constitution and microstructure are the result of phase transformations, ordering reactions and recrystallization processes, which occur during synthesis, processing and service. Many aspects of these mechanisms are intimately linked to defect configurations at the atomic level; thus standard techniques of metallography were often inadequate to provide the necessary information. This lack of information is addressed in the present article in that observations on recrystallization and phase transformations by high-resolution electron microscopy are presented. Particular

Cite

CITATION STYLE

APA

Appel, F. (2012). Phase Transformations and Recrystallization Processes During Synthesis, Processing and Service of TiAl Alloys. In Recrystallization. InTech. https://doi.org/10.5772/34972

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free