|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced High-Strength Steels
||Related Mechanisms in Athermal and Deformation-induced Martensitic Transformation in Austenitic Fe-Cr-Ni Alloys
||Ye Tian, Annika Borgenstam, Peter Hedström
|On-Site Speaker (Planned)
The athermal and deformation-induced martensitic transformation in high-purity Fe-Cr-Ni alloys has been investigated. The ε-martensite (ε) was found to play a key role in the α'-martensite (α') formation. It can increase the Ms temperature for α' by affecting the nucleation behavior. For the range of Fe-Cr-Ni alloys studied, Ms temperatures for α' are almost the same as those for ε. The athermal α' tend to form along parallel ε bands and the deformation-induced martensite tend to form at both intersections of shear bands and individual shear bands and the dominating nucleation sites is goverened by the alloying content of the specific alloy. The two types of martensitic transformations are related and discussed in view of the alloys' stacking fault energies and chemical driving for martensitic transformation.
||Planned: Supplemental Proceedings volume