About this Abstract |
Meeting |
TMS Specialty Congress 2024
|
Symposium
|
Accelerating Discovery for Mechanical Behavior of Materials 2024
|
Presentation Title |
Corrosion Fatigue Behaviour of Repititive Corrugation and Straightening Processed AA5083 Alloy |
Author(s) |
Balasivanandha Prabu Shanmugavel, Sri Rathinamani Ramdoss, Manikandan Murugan, Pooja Kathiresan |
On-Site Speaker (Planned) |
Balasivanandha Prabu Shanmugavel |
Abstract Scope |
This work discusses the corrosion-fatigue behaviour of ultrafine-grained (UFG) AA5083 alloy. The UFG specimens were prepared by Repetitive Corrugation and Straightening (RCS) Process. The hardness and the tensile strength of the UFG alloy increased up to 27% and 24% respectively compared with the unprocessed alloy. Fatigue tests were conducted in a corrosive medium of 3.5% NaCl with a pH level of 6.3 in case of both unprocessed and RCS processed alloy, at a constant stress ratio of R= -1 and frequency = 20 Hz. Due to a more rapid formation of a passive layer on the UFG alloy, decreases the corrosion rate by 68%. In fact, a nearly 20% increase in fatigue life was observed in the RCS processed material compared with the unprocessed variant. In the unprocessed AA 5083 alloy, crack propagation at all stress levels is mediated by inter-granular corrosion. |
Proceedings Inclusion? |
Definite: Other |