Void closure behavior during plastic deformation using the representative volume element model
Source abstract
Abstract
The process of smelting, pouring, and solidification for steel determines the inevitable existence of all kinds of macroscopic and microscopic void defects in the ingot. These voids need to be eliminated by a proper plastic forming process. However, the mechanism of void closure is not well understood at present. In particular, the investigation on the evolution law of void closure under complex stress state is not deep enough. Based on the representative volume element model, numerical simulations and theoretical analysis, the effects of the spherical stress tensor and the deviatoric stress tensor on the evolution of void are expounded. It is found that the relative size of the three principal values of the deviatoric stress tensor determines the shape change of the void during plastic deformation. Besides, the change of the relative value of the principal values of the deviatoric stress tensor has little effect on the maximum compressive strain required for void closure. Moreover, the smaller the principal value of the spherical stress tensor is, the smaller the strain required for void closure is.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Metal Forming Simulation Techniques · Metallurgy and Material Forming · Mechanical stress and fatigue analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (23)
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