| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Microstructural Evolution during Galling |
| Author(s) |
Samuel Rogers, David Dye |
| On-Site Speaker (Planned) |
Samuel Rogers |
| Abstract Scope |
Galling is an adhesive wear mechanism resulting from high compressive loads and low sliding speeds, and is found to occur in valves. Although characterisation of surfaces is often performed, little work has been produced which investigates the sub-surface microstructural evolution resulting from galling.
The galling of self-mated 316L stainless steel results in the formation of a nanocrystalline region immediately beneath the galled surface, termed the tribologically affected zone (TAZ). Through the use of TEM, STEM-EDX and XRD the TAZ was found to contain grains of both alpha-prime martensite and austenite.
By performing non self-mated galling tests of 304 against 316L stainless steel, further microstructural and macrostructural evolution was observed, most notably in the adhesive transfer of material from one surface to the other. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Iron and Steel, Phase Transformations |