Abstracts Book - IMRC 2018

• SE1-O020
DERIVATION OF THE FORMING LIMIT DIAGRAM ON THE AL-5754
PROCESSED BY REPETITIVE CORRUGATION AND STRAIGHTENING
Marco Alejandro Ezequiel Alvarado 1 , Sergio Alberto Elizalde Huitron 1 , María Teresa Baile 2 , Jose
Maria Cabrera 3 , Ignacio Alejandro Figueroa Vargas 1 , Gonzalo Gonzalez 1
1 Instituto de Investigaciones en Materiales, Materiales metálicos y cerámicos, Mexico.
2 Universitat Politècnica de Catalunya, Ciencia de los Materiales e Ingeniería Metalúrgica-
ETSPVG, Spain. 3 Universitat Politècnica de Catalunya, Ciencia de los Materiales e Ingeniería
Metalúrgica-EEBE, Spain.
Sheets of the AlMg 5754 alloy were processed by Repetitive Corrugation and
Straightening (RCS) at room temperature to induce large deformation in order
to reduce the grain size and increase the dislocation density. A novel design of
the dies that aims to reduce anisotropy was used to process the above sheets.
The final mechanical properties and microstructural homogeneity were checked
through derivation of the Forming Limit Diagram (FLD). For this purpose
different geometries were extracted from the deformed, and they were tested
with a hemispherical punch test to obtain different deformation paths in order
to draw forming limit curves for each deformation condition. A microstructural
analysis and a mathematical simulation of the process with the software
ABAQUS were also performed.
The forming limit curves showed some dependence with the amount of
deformation imparted by the RCS process. Evidence of microstructural changes
was found. And, finally, the simulation allowed to calculate the amount of
deformation and stress given by the RCS process.
Keywords: Repetitive corrugation and straightening, Forming limit diagram,
Mechanical properties
Presenting authors email: marcoeze13@gmail.com