Substantial softening in the bulk modulus (a factor of five) and a negative Poisson ratio (-0.25) have been observed via broadband viscoelastic spectroscopy in the vicinity of the Curie point of a barium titanate ceramic. These effects were observed under electrical short-circuit conditions at low deformation frequencies. Softening was less in an electric open circuit or at higher frequencies. ...

Cyclic expansion extrusion with an asymmetrical cavity (CEE-AEC) was carried out on pure magnesium up to 3 passes at different deformation temperatures of 250 °C and 350 °C. The microstructure texture evolution its edge center regions are studied respectively, their mechanical properties correlated. results show that there is incomplete dynamic recrystallization (DRX) region in deformed Therefo...

Softening is a characteristic of fruit ripening caused by oxidative action. The oxidized degree of membrane lipids and proteins in relation to production of reactive oxygen species (ROS) of postharvest banana fruit during softening were investigated. Firmness as an indictor of softening of banana fruit was also measured. Banana fruit firmness decreased markedly after 4 days of storage, which in...

The role of polygalacturonase (PG) in the development, ripening, and softening of fruit from two strawberry cultivars with different flesh firmness and softening characteristics was compared. Changes in PG activity and gene expression during development, ripening and softening were measured. The PG genes from each cultivar were cloned and analyzed, and were classified with other PG genes using ...

This paper aims at studying the monotonic and cyclic plastic deformation behavior of DIN 34CrNiMo6 high strength steel. Monotonic and low-cycle fatigue tests are conducted in ambient air, at room temperature, using standard 8-mm diameter specimens. The former tests are carried out under position control with constant displacement rate. The latter are performed under fully-reversed strain-contro...

Microstructural features and their evolution during cyclic deformation directly impact the low cycle fatigue (LCF) life of additively manufactured Laser Powder Bed Fusion (LPBF) Ti–6Al–4V. Tensile strain controlled LCF tests were performed at room (RT) elevated temperature (ET, @ 400 °C) to study softening behaviour failure mechanism LPBF The α′ grains free dislocation density studied using Ele...

5.1 Abstract The change in the configurational enthalpy of metallic-glass-forming liquids induced by mechanical deformation and its effect on elastic softening is assessed. The acoustically measured shear modulus is found to decrease with increasing configurational enthalpy by a dependence similar to one obtained by softening via thermal annealing. This establishes that elastic softening is gov...