Title
Necking detection in stretch-bent materials exhibiting the Portevin-Le Chatelier effectOther institutions
Universidad de SevillaVersion
Published version
Rights
© 2024 The AuthorsAccess
Open accessPublisher’s version
https://doi.org/10.21741/9781644903131-174Published at
Materials Research Proceedings 2024. Vol. 41. Pp. 1569-1578Publisher
Materials Research Forum LLCKeywords
necking
Nakazima
PLC effect
stretch-bending ... [+]
Nakazima
PLC effect
stretch-bending ... [+]
necking
Nakazima
PLC effect
stretch-bending
time-dependent
Flat Valley method [-]
Nakazima
PLC effect
stretch-bending
time-dependent
Flat Valley method [-]
Abstract
In recent years, there has been increasing societal awareness of the carbon dioxide (CO2) footprint resulting from individual actions and lifestyles. One of the research actions is focused on the deve ... [+]
In recent years, there has been increasing societal awareness of the carbon dioxide (CO2) footprint resulting from individual actions and lifestyles. One of the research actions is focused on the development of eco-friendly alloys with more recycled scrap material in order to reduce emissions, but this can also result in greater variability of material properties. In this context, accurately characterizing the formability limits of materials is of paramount importance for optimizing manufacturing processes. Although ISO 12004-2:2008 standard is commonly used for necking detection, recent years have seen time-dependent methods yield more accurate predictions. Nevertheless, in materials exhibiting the Portevin-Le Chatelier (PLC) effect, such as some common lightweight alloys used in automotive and aeronautics, necking detection introduces significant challenges, and even more so when the material is subjected to severe local stretchbending states. In this work, various necking detection techniques were employed to analyze their capabilities in a series of stretch-bending experiments over a 2.94 mm thick AA5754H11 PLCdriven material. [-]
Funder
Gobierno de EspañaProgram
Programa Estatal para Impulsar la Investigación Científico-Técnica y su Transferencia 2021Number
PID2021-125934OB-I00Award URI
https://investigacion.us.es/sisius/sis_proyecto.php?ct=1&cs=1&idproy=35443Project
Caracterización experimental y numérica de la conformabilidad de rebordeado convencional e incremental de aleaciones de aluminio aeronáuticas durante el envejecimiento naturalCollections
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