Effect of prestrain on mechanical behavior of aluminum alloys
VINCZE Gabriela, BUTUC Marilena C., WEN Wei, YÁNEZ Jesús, LOPES Diogodownload PDF
Abstract. Sheet metal forming involves many times large plastic strain and strain path changes. It is well known that the plastic behavior of metals is strain path sensitive. In monotonic loading, the microstructure as well as the crystallographic texture evolve during deformation leading usually to a gradual material hardening that tends to saturate at large strains. Such evolution can be interrupted if a severe change of strain path occurs. The simplest way to change drastically the strain path is through reverse loading, namely, by loading the material in opposite direction to the previous one. In this case, the material behavior can show one or more characteristics, such as the Bauschinger effect, transient hardening, softening or hardening. This work investigated the effects of the prestrain on the mechanical response of the material subjected to reverse simple shear. The prestrain is produced by rolling, either symmetric or asymmetric, and different amounts of equivalent strain. Three routes of rolling are used, namely, symmetric, asymmetric continuous, and asymmetric reverse . The Bauschinger effect slightly decreases with the prestrain increase for the initial material. After rolling, the Bauschinger effect is insensitive to the rolling route, and it is also insensitive to the amount of the rolling prestrain.
Aluminum Alloys, Mechanical Behavior, Asymmetric Rolling
Published online 4/19/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: VINCZE Gabriela, BUTUC Marilena C., WEN Wei, YÁNEZ Jesús, LOPES Diogo, Effect of prestrain on mechanical behavior of aluminum alloys, Materials Research Proceedings, Vol. 28, pp 847-854, 2023
The article was published as article 93 of the book Material Forming
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