Tailoring graded and multilayered high-strength Al sheets by Cross Accumulative Roll Bonding (CARB) process

Autor(es)

Tayyebi, Moslem ; Magalhaes, Danielle Cristina Camilo ; DerakhshaniMolayousefi, Mahdi ; Braga, Diogo Pedrino

• Tipo de documento: Artigo Científico
• Fonte: Journal of Alloys and Compounds; v. 1021, p. 12-pg., 2025-04-05.

Resumo

Achieving synergy between high strength and ductility in aluminum (Al) alloys is essential for structural applications. This study presents a novel approach for production of AA1050 Al graded composite, which combines of cross accumulative roll bonding (CARB), annealing, and final cold roll bonding (CRB). Although conventional methods were employed, a multilayered sheet comprising alternating hardened and softened layers was achieved only with merely five passes. Microstructural analysis showed equiaxed grains and partial recrystallization for the 5X-CARB + annealing route, while the final CRB processing yielded a bimodal grain distribution with improved interfacial bonding. These features resulted in yield and ultimate tensile strength (UTS) values of 251 +/- 12 MPa and 310 +/- 15 MPa, representing increases of 286 % and 156 % compared to the AA1050 Al in the annealed condition. Despite reduced ductility, a balanced strength-ductility profile was achieved. This underscores the potential of CARB-based methods in facilitating low-cost, high-performance, and high-throughput approaches in the fabrication and processing of Al alloys, which revolutionizes their industrial applications. (AU)

• Processo FAPESP: 23/03242-7 - Obtenção de chapas heteroestruturadas de Cu/Nb com propriedades mecânicas e funcionais otimizadas
• Beneficiário: Danielle Cristina Camilo Magalhães
• Modalidade de apoio: Auxílio à Pesquisa - Regular