The effect of slip transfer on the flow strength various FCC polycrystals was analyzed by means computational homogenization a representative volume element microstructure. crystal behavior governed physically-based plasticity model in framework finite strains where at grain boundaries allowed between systems suitably oriented according to geometrical criteria. Conversely, blocked if conditions...

The mechanical properties of Ti49.8Ni50.2 (at %) alloy under tension at room temperature are studied in dependence on the true strain (e = 1.84–9.55) specified during isothermal multi-axial forging (abc-pressing). It was found that stress beginning pseudoyield plateau does not depend value abc-strain. after abs-pressing, already a e 1.84, yield σy 900 ± 25 MPa, which is more than twice as high ...

Commercial pure Ti alloys are favorable for biomedical applications; however, they need to be strengthened by the addition of alloying elements. Herein, Ti-Fe modified with Zr were explored produce that exhibit high strength and ductility biocompatible. extruded materials solutes prepared combining solid sintering hot extrusion. X-ray diffraction results revealed lattice constant α-Ti β-Ti incr...

Abstract Traditional metallic materials usually face a dilemma between high strength and poor strain hardening capacity. However, heterogeneous structured have been found to obviously overcome the trade-off. Herein, gradient lamellar structure was fabricated through ultrasound-aided deep rolling technique in pure Ni with stacking fault energy after heat treatment. The successively divided into ...

The effects of cerium (Ce) on the microstructure, mechanical properties and strain hardening behavior Fe-18Mn-0.6C twin-induced plasticity (TWIP) steel were investigated by electron backscatter diffraction, X-ray diffraction transmission microscopy. Compared with addition Al, Ce significantly reduced stacking fault energy TWIP steel, which promotes formation deformation annealing twins. dynamic...

In this study we developed a novel (TRIP+TWIP) high entropy alloy (HEA) with specific strength and large ductility. First, by controlling the atomic constitution of 3d transition metals (Cr, Mn, Fe, Co, Ni), designed light-weight TRIP-assisted dual-phase HEA non-equiatomic composition Cr22Mn6Fe40Co26Ni6, which exhibited 5% lighter density than Cantor HEA. Secondly, systematically added Al (a li...

To quantitatively evaluate the three-dimensional lamellar curvature in pearlitic steel, crystallographic orientation rotation of ferrite and cementite was analyzed using scanning electron microscopy backscattering diffraction. In hypereutectoid steel containing 0.92% C, 0.30% Mn, 0.20% Si, 0.19% Cr, ferrite–cementite interfaces some colonies were confirmed to match well with those having freque...

Aging and quenching at critical temperatures were applied to a hot-rolled (HR) Fe-24.86Ni-5.8Al-0.38C (mass%) dual-phase alloy obtain B2 precipitates with various volume fractions sizes. Higher yield strength stronger strain hardening achieved in the aged samples compared these for HR sample, corresponding deformation mechanisms carefully revealed. The show hetero-deformation induced that sampl...

Push-pull tests at fixed plastic strain amplitude or stress were run on a TWIP steel, and followed by TEM observations, to analyze its cyclic behavior in relation with the deformation mechanisms. The kinematic isotropic components of flow measured throughout whole hardening/softening stages, their evolution cumulated was compared those tension. rise internal found responsible for initial harden...