About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Ultrafine-grained and Heterostructured Materials (UFGH XII)
|
Presentation Title |
Influence of High-pressure Torsion-induced Strain on Electrical Conductivity and Wear Resistance |
Author(s) |
Evander Ramos, Takahiro Masuda, Zenji Horita, Suveen N. Mathaudhu |
On-Site Speaker (Planned) |
Suveen N. Mathaudhu |
Abstract Scope |
High-pressure torsion (HPT) is known to impart strain with radial inhomogeneity, potentially creating heterogeneous microstructures and properties. Hardness testing and microscopy are widely used to characterize properties at specific locations throughout the disc, thus facilitating correlation of their evolution with strain. Alternatively, properties like electrical conductivity and wear resistance are measured across large areas, and thus wide ranges of strains. Here, electrical conductivity and wear resistance of different sections of HPT-processed discs are characterized with specific regard to local strain. For conductivity, discs were cut into a spiral pattern to obtain a uniform cross section with monotonically increasing strain, thereby enabling a more precise study of electrical properties at various strains. Additionally, linear reciprocating wear tests were conducted at different regions of the disc and in different directions in relation to the HPT processing. Good agreement is found between these results and other severe plastic deformation literature. |
Proceedings Inclusion? |
Planned: |
Keywords |
Copper / Nickel / Cobalt, Characterization, Nanotechnology |