Mechanical, stress corrosion cracking and crystallographic study on flat components processed by two combined severe plastic deformation techniques
Por:
Romero-Resendiz, L., Cabrera, J. M., Elizalde, S., Amigo-Borras, V, Figueroa, I. A., Gonzalez, G.
Publicada:
1 ene 2022
Resumen:
Although the current field of application of Al–alloy 7075 (AA7075) is vast, it is still limited due to some drawbacks, especially due to its susceptibility to stress corrosion cracking (SCC). This work aims to evaluate the microstructural, mechanical, and stress corrosion cracking (SCC) behaviors on an AA7075 in flat format deformed by a combination of repetitive corrugation and straightening (RCS) and accumulative roll bonding (ARB) techniques. Four different deformation routes were applied, namely: ARB (A), RCS (R), RCS + ARB (RA) and ARB + RCS (AR). As expected, the efficiency for grain refinement depends on the applied route, in terms of average grain size regarding the initial condition IC): AR > A > RA > R. All conditions resulted in unimodal and widened grain size distributions of micro-, submicro- and nano-metric dimensions. The study of crystallographic orientations showed that route R did not generate any new texture, whereas different preferred orientations were obtained for routes A, RA, and AR. The hardness and three-point bending tests showed an improvement of mechanical strength in the following order: AR > RA > A > R. The cracks per cm2 obtained in the corrosion study indicated that the best SCC resistance was R > A > AR > RA. Based on the above, the best combination of microstructural, mechanical, and SCC properties until one deformation pass was obtained by the single route of the ARB process. © 2022 The Author(s)
Filiaciones:
Romero-Resendiz, L.:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Cd. Universitaria, A. P. 70-360, CoyoacánC.P. 04510, Mexico
Univ Nacl Autonoma Mexico, Inst Invest Mat, Circuito Exterior S-N,AP 70-360, Coyoacan 04510, Mexico
Cabrera, J. M.:
Departamento de Ciencia e Ingeniería de Materiales, EEBE – Universitat Politècnica de Catalunya, Eduard Maristany 10-14, Barcelona, 08019, Spain
EEBE Univ Politecn Catalunya, Dept Ciencia & Ingn Mat, Eduard Maristany 10-14, Barcelona 08019, Spain
Elizalde, S.:
Departamento de Ciencia e Ingeniería de Materiales, EEBE – Universitat Politècnica de Catalunya, Eduard Maristany 10-14, Barcelona, 08019, Spain
EEBE Univ Politecn Catalunya, Dept Ciencia & Ingn Mat, Eduard Maristany 10-14, Barcelona 08019, Spain
Amigo-Borras, V:
Universitat Politècnica de València, Instituto de Tecnología de Materiales, Camino de Vera S/n, Valencia, 46022, Spain
Univ Politecn Valencia, Inst Tecnol Mat, Camino Vera S-N, Valencia 46022, Spain
Figueroa, I. A.:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Cd. Universitaria, A. P. 70-360, CoyoacánC.P. 04510, Mexico
Univ Nacl Autonoma Mexico, Inst Invest Mat, Circuito Exterior S-N,AP 70-360, Coyoacan 04510, Mexico
Gonzalez, G.:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Cd. Universitaria, A. P. 70-360, CoyoacánC.P. 04510, Mexico
(Corresponding Author), Univ Nacl Autonoma Mexico, Inst Invest Mat, Circuito Exterior S-N,AP 70-360, Coyoacan 04510, Mexico
Univ Nacl Autonoma Mexico, Inst Invest Mat, Circuito Exterior S-N,AP 70-360, Coyoacan 04510, Mexico
gold, All Open Access; Gold
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