The change in near-tip stress field in Small Scale Yielding (SSY) for cracks located at an interface between two materials with different plastic work hardening is investigated. The difference in hardening is termed hardening mismatch, and is quantified through the parameter n, which is the difference in hardening exponent between the two materials. For cracks in elastic-ideally plastic materia...

Drought stress is the main cause of mortality of holm oak (Quercus ilex L.) seedlings in forest plantations. We therefore assessed if drought hardening, applied in the nursery at the end of the growing season, enhanced the drought tolerance and transplanting performance of holm oak seedlings. Seedlings were subjected to three drought hardening intensities (low, moderate and severe) for 2.5 and ...

Strain hardening capability is critical for metallic materials to achieve high ductility during plastic deformation. A majority of nanocrystalline metals, however, have inherently low work hardening capability with few exceptions. Interpretations on work hardening mechanisms in nanocrystalline metals are still controversial due to the lack of in situ experimental evidence. Here we report, by us...

A constitutive model for isotropic, semi-crystalline polymers is proposed. The Eulerian in the sense that it independent of measures total deformation and plastic/inelastic deformations. It able to account such essential phenomena as strain-rate dependence, work hardening, stress relaxation, volumetric inelastic deformations, damage. was applied uniaxial tension tests performed on polyoxymethyl...

This work investigates the impact of vacuum sintering and microstructure-mechanical properties relationship in binder jet additive manufacturing 316 L. These two perspectives provide valuable understanding to an otherwise well-established area. The resulting are compared with those conventionally manufactured parts. Results revealed isotropic microstructural mechanical jet-manufactured samples....

The microstructural evolution during low temperature ageing of two commercial purity alloys (Al1.2Cu-1.2Mg-0.2Mn and Al-1.9Cu-1.6Mg-0.2Mn at.%) was investigated. The initial stage of hardening in these alloys is very rapid, with the alloys nearly doubling in hardness during 20 h ageing at room temperature. The microstructural evolution during this stage of hardening was investigated using diffe...