European Conference on Neutron Scattering 2023

Elastic constants and deformation mechanisms in titanium alloys determined through diffraction under mechanical load

21 Mar 2023, 16:00

2h

Yards 4 - 6 (Fakultät für Maschinenwesen)

Board: TU-092

Poster Engineering applications Poster session TUESDAY

Speaker

Markus Hoelzel

Description

In this contribution, we report on neutron and synchrotron diffraction studies under mechanical stress in titanium alloys Ti-64 (near α-alloy), Ti-6246 (α+β alloy), Ti-5553 (near β-alloy) and Ti-38644 (β-alloy) to investigate the deformation mechanisms. In particular, the determination of single-crystalline elastic constants derived from the measured lattice strains in the polycrystalline specimens will be presented. These results have been used further to quantify the load partitioning in the elastic regime between the softer β phase and stiffer α phase. In addition, diffraction data were collected along the entire elastic and plastic regime to determine the evolution of lattice strains, texture and phase compositions [1,2].

References:
[1] A. Heldmann, M. Hoelzel, M. Hofmann, W.M. Gan, W.W. Schmahl, E. Griesshaber, Th. Hansen, N. Schell, W. Petry, J. Appl. Cryst. (2019). 52, 1144–1156.
[2] A. Heldmann, M. Hofmann, M. Hoelzel, J. Appl. Cryst. (2022). 55, 656–662.