Mechanical behavior of heat-treated Al-Cu-Mg open-cell foams

• Published in: Materials letters Vol. 284; p. 129021
• Main Authors: Figueroa, I.A., Mendieta, I., Azamar, M.F., Lara-Rodríguez, G.A., Novelo-Peralta, O.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2021; Elsevier BV
• Subjects: Aging; Aging treatment; Al-Cu-Mg alloys; Aluminum; Compressive behavior; Copper; Energy absorption; Energy absorption capacity; Foamed metals; Heat treatment; Magnesium; Materials science; Mechanical properties; Open-cell metallic foams; Precipitates; Yield stress; Open-cell metallic foams; Al-Cu-Mg alloys; Aging treatment; Energy absorption capacity; Compressive behavior
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2020.129021

•Processing of homogeneous Al-Cu-Mg Open-Cell Foams by replication cast method.•Improvement of mechanical behavior of heat treatable Al-Cu-Mg Open-Cell Foams with constant porosity.•Improvement of energy absorption with time of permanence of ageing treatment at 200 °C.•Development of a new generation of heat treatable opened cell metallic foams. Al-Cu-Mg Open-Cell Foams were heat-treated and mechanically analyzed. The foams were fabricated by the replication casting technique with Al-2.1Cu-1.25 Mg (wt.%) with NaCl grains as preform. The yield stress increased with the aging time, showing a maximum value at 24 h. As the aging time increased, the Plateau region shortened, being attributed to the precipitates formation. The aging effect on the mechanical behavior improved the energy absorption capacity. The variation of the energy absorbed was attributed to the cell walls hardening. This study contributes to the development of a new generation of heat treatable opened cell metallic foams and its strengthening mechanism.