Large strain burst induced by martensitic transformation in austenitic micropillars
Journal
Scripta Materialia
Journal Volume
137
Pages
64-68
Date Issued
2017
Author(s)
Abstract
The present work investigates, for the first time, the effects of martensitic transformation as well as orientation on the stress-strain behaviour of austenitic micropillars. It is found that large strain burst can be induced by martensitic transformation, and its magnitude depends on the orientation of pillars. Pillars with an orientation close to [1 0 0] show a much larger strain burst than the ones with an orientation close to [1 1 0]. This is because [1 0 0] pillars have a much higher fraction of transformed martensite to which the magnitude of strain burst is directly correlated.
Type
journal article