Influence of phase composition on Portevin-Le Chatelier effect in Al-Mg alloys

Borisova, Yu.; Yuzbekova, D.; Mogucheva, A.

Influence of phase composition on Portevin-Le Chatelier effect in Al-Mg alloys

Borisova, Yu., Yuzbekova, D., Mogucheva, A.

Дата публикации: 2019

Дата публикации в реестре: 2020-06-02T10:50:39Z

Аннотация:

The temperature-strain rate domain of the Portevin-Le Chatelier (PLC) effect has been determined for three ultrafine grained aluminum alloys: Al-3Mg (А1), Al-4,57Mg0,35Mn-0,2Sc-0,09Zr (А2) and Al-5,4Mg-0,52Mn-0,1Zr (А3) (wt.%). The apparent activation energy of the serrated yielding was estimated. It was found that the presence of dispersed particles leads to a decrease in the activation energy and the temperature–strain rate domain of the PLC effect becomes narrower

Ключевые слова:
technique, metal science, alloys, Al-Mg alloys, Portevin-Le Chatelier effect, plastic deformation, temperature, phase composition

Тип: Article