2 results match your criteria: "International Journal Of Plasticity[Journal]"
Quasi-static and dynamic response, and texture evolution of two overaged Al 7056 alloy plates in T761 and T721 tempers: Experiments and modeling.
Int J Plast
July 2020
NIST Center for Neutron Research, Gaithersburg, MD, 20899-8562, USA.
Article Synopsis
- The study investigates the thermo-mechanical behavior and texture changes in two types of Al 7056 alloy plates (T761 and T721 tempers) under different strain rates and temperatures during uniaxial tension and compression.
- Findings highlight that as the alloy is aged from T761 to T721, the precipitate size increases while their density decreases, influencing flow stress and strain hardening characteristics, especially at lower temperatures.
- A notable transition in fracture modes occurs at 200 °C, with both tempers showing strain rate sensitivity; the study helps refine the Khan-Liu model to better match observed mechanical responses across the tested conditions.
Thermally-activated constitutive model including dislocation interactions, aging and recovery for strain path dependence of solid solution strengthened alloys: Application to AA5754-O.
Int J Plast
January 2015
Materials Science and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA.
A thermally-activated constitutive model is developed based on dislocation interactions, crystallographic orientations and microstructural evolution to describe the elasto-plastic stress-strain behavior during multi-axial loading. The aim is to contribute to the quantification of complex strain path response in solid solution strengthened alloys. In detail, dislocation/dislocation interactions are incorporated in the model to quantify latent and kinematic hardening phenomena during loading path changes.
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