Hydrogen-Induced Martensitic Transformation and Twinning in Fe45Mn35Cr10Co10

Stress-induced martensitic phase transformation in thin sheets of Nitinol

Using the in situ optical technique known as digital image correlation (DIC), full-field quantitative strain maps of localization have been experimentally obtained for the first time in thin sheets of Nitinol. The use of DIC provides new information connecting previous observations on the microand macro-scales. It shows that the transformation initiates before the formation of localized bands, ...

Analysis of deformation induced martensitic transformation in stainless steels

Many studies monitoring the formation of martensite during the tensile deformation of austenite report data which are, in principle, affected by both the applied stress and the resulting plastic strain. It is not clear in these circumstances whether the transformation is stress induced (i.e. the stress provides a mechanical driving force) or whether the generation of defects during deformation ...

Martensitic Transformation and Elastic Constants

Symmetry breaking and transformation twinning

The investigation of microstructure is largely based on the knowledge of the transformation twins the are possible for a crystal undergoing a symmetry-breaking, di usionless phase transition. In order to have a complete description of this phenomenon, in this paper we review the subject of mechanical twinning from the point of view of nonlinear elasticity, and we examine the existence and gener...

Driving force for martensitic transformation in steels

recently determined LVl~ to be 111918 J mol-I at temperatures below 1000 K, and pointed out that their experimental data were free from various 'intercept effects' which had dogged earlier investigations. Similarly, for T<1000K, they deduced '\~s=51.44Jmol-IK-I. There seem to be no data on the variation of LVl~ or ,\~s as a function of x. However, Lobo and Geigerl found that LVll: and ,\S~S do ...