A new β-metastable Ti-alloy is designed with the aim to obtain a TWIP alloy but positioned at limit between TRIP/TWIP and dominated regime. The exhibits large ductility combined an elevated stable work-hardening rate. Deformation occurring by formation multiplication of {332}<113> twins evidenced followed in-situ electron microscopy, no primary stress induced martensite observed. Since microstr...

The hot ductility of Transformation Induced Plasticity (TRIP) and Twinning (TWIP) steels is reviewed, concentrating on the likelihood cracking occurring continuous casting during straightening operation. In this review, influence high levels Al, Si, P, Mn C their will be discussed as well important role B can play in improving ductility. Of these elements, Al has worst but a addition often need...

Increasing the yield stress of twinning-induced plasticity (TWIP) steels is a demanding task for modern materials science. This aim can be achieved by microstructure refinement induced heavy straining. We feature microstructural evolution and mechanical performance high-manganese TWIP steel subjected to deformation treatment different combinations equal channel angular pressing (ECAP) rolling a...

As expected from the alloy design procedure, combined Twinning Induced Plasticity (TWIP) and Transformation Induced Plasticity (TRIP) effects are activated in a metastable β Ti-12(wt.%)Mo alloy. In-situ Synchrotron X-ray diffraction (XRD), electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM) observations were carried out to investigate the deformation mechanisms an...

In recent years, great attention has been paid to the development of high manganese austenitic TWIP steels exhibiting high tensile strength and exceptional total elongation. Due to low stacking fault energy (SFE), cross slip becomes more difficult in these steels and mechanical twinning is then the favored deformation mode besides dislocation gliding. Chemical composition along with processing ...

In recent years, TRIP/TWIP steels have been the focus of great attention thanks due to their excellent tensile strength-ductility combination. The compression tests were performed at different temperatures from 25 to1000°C to study the mechanical behavior of advanced austenitic steel with 21% manganese plus bearing Ti. The results indicated that the plastic deformation is controlled by deformat...

Abstract Materials innovation calls for an integrated framework combining physics-based modelling and data-driven informatics. A dislocation-based constitutive model accounting both transformation-induced plasticity (TRIP) twinning-induced (TWIP) was built to interpret the mechanical characteristics of metastable titanium alloys. Particular attention placed on quantitatively understanding compo...