A recent study  has shown that a microstructure can be refined to a record low of 5 nm and that dislocation glide is still a controlling mechanism at this length scale. The nanostructure was produced in Cu by applying a very high strain in friction. The stress and strain decrease with increasing distance from the surface forming a gradient structure. In this study , by shot peening of a low carbon steel a gradient structure has been produced extending to about 1 mm below the surface. A number of strengthening mechanisms have been analyzed as a basis for a calculation of the stress and strain as a function of the distance from the surface. The results are evaluated by a finite element investigation of shot peening.
|Number of pages||1|
|Publication status||Published - 2016|
|Event||TMS 2016 145th ANNUAL MEETING & EXHIBITION - Nashville, United States|
Duration: 14 Feb 2016 → 18 Feb 2016
|Conference||TMS 2016 145th ANNUAL MEETING & EXHIBITION|
|Period||14/02/2016 → 18/02/2016|
Bibliographical notePart of: Proceedings - 2016 TMS Annual Meeting & Exhibition, 2016.
Presented at: Ultrafine Grained Materials IX; 2016 TMS Annual Meeting & Exhibition, Nashville.