Portevin-Le Chatelier effect in heterogeneous microstructural condition produced by friction-stir processing of Al-Mg alloy

In this work, the microstructural sensitivity of the Portevin-Le Chatelier (PLC) effect was examined using an Al-Mg alloy with a heterogeneous microstructure distribution. It was shown that the microstructural changes induced by friction-stir processing have promoted an increase in the magnitudes of the stress oscillations, localized strain, and the width of deformation bands, thus enhancing the PLC phenomenon.

Automated summary

The microstructural sensitivity of the Portevin-Le Chatelier (PLC) effect in an Al-Mg alloy with a heterogeneous microstructure distribution was investigated. It was found that the microstructural changes induced by friction-stir processing enhanced the PLC phenomenon by increasing the magnitudes of stress oscillations, localized strain, and the width of deformation bands.