Work

Mechanism Governing the Effect of Roller Straightening of a Pure Magnesium Strip on the Tensile Stress–Strain Curve Shape

Year: 2025

Type: article

Abstract: A roller straightening process of a pure magnesium strip, accompanied by alternating elastic-plastic deformation, was performed through one and three passes, where one pass corresponded to 19 bending events. It was discovered that roller straightening leads to the appearance of a kink in the specimen’s tensile stress–strain curve as well as an almost twofold decrease in the yield stress. This effect was observed only on longitudinal specimens. The conducted EBSD analysis confirmed the previously stated hypothesis about the influence of twinning on the change in the shape of the roller-straightened magnesium alloy specimen’s stress–strain curve. The tensile twins {101¯2} formed during roller straightening facilitate the detwinning process during subsequent tensile deformation, which, along with the basal sliding, is the reason for the decrease in yield stress. The scaling factor of the tensile specimens was investigated.

Source: Journal of Manufacturing and Materials Processing

DOI: 10.3390/jmmp9120413

Authors: Stanislav O. Rogachev, Viacheslav E. Bazhenov, Eugene S. Statnik, Vladimir A. Andreev, Anatoly E. Shelest, Nikita A. Ershov

Institutions: National University of Science and Technology, Russian Academy of Sciences, Baikov Institute of Metallurgy and Materials Science, Skolkovo Institute of Science and Technology

Language: English

Topic: Magnesium Alloys: Properties and Applications

Subfield: Biomaterials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,172

Funder: National University of Science and Technology