The Portevin–Le Chatelier effect in an Al-Mg alloy

The Portevin–Le Chatelier (PLC) effect has been studied in an Al-Mg alloy. A series off tensile tests was carried out at temperatures ranging from –100 to 150°C at plastic strain rates ranging from a low 10−1 s−1 to a high of 10−5 s−1. The coarse-grained material displays tensile curves typical of Al-Mg alloys with an extensive initial strain hardening and an overall parabolic shape until necking. Mixed type (A + B) serrations take place during the strain hardening stage.