2021-10-21 Lecture by snr prof. Elena Pereloma.
Characterisation of Deformed Microstructure in Alloys Exhibiting Transformation-Induced Plasticity and/or Twinning-Induced Plasticity Effects
Abstract:
Strength-ductility relationships deviate from the typical ones of reduction in ductility with strength increase in some metals and alloys. Such materials also exhibit high strain hardening rates. These unique mechanical properties are due to the accommodation of plastic deformation by twinning and/or phase transformations in addition to slip. Two main groups of these materials are medium-high Mn steels and metastable β titanium alloys. There is a continuous research effort aimed at microstructure control under different loading conditions in these alloys. This lecture will discuss the challenges of characterisation of deformation behaviour of metastable β titanium alloys from micro- to nano-level with the focus on the current understanding of complex hierarchical microstructures.
