ORCID Profile
0000-0001-9826-0019
Current Organisation
Nanjing University of Science and Technology
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Wiley
Date: 22-07-2018
Publisher: Elsevier BV
Date: 02-2023
Publisher: Elsevier BV
Date: 10-2023
Publisher: Springer Science and Business Media LLC
Date: 17-04-2018
Publisher: Springer Science and Business Media LLC
Date: 07-2019
Publisher: Elsevier BV
Date: 08-2013
Publisher: Elsevier BV
Date: 12-2022
Publisher: Wiley
Date: 10-09-2019
Abstract: A ductile duplex stainless steel consisting of a ferrite phase and an austenitic phase is chosen as a model material to investigate the development of shear strain patterns under high‐pressure torsion. Systematic analysis on the macroscopic and microscopic heterogeneities of local shear strain reveals that complex shear patterns can be developed only above a high strain level where the grain sizes are already refined to a steady state. It is concluded that grain boundary‐mediated deformation mechanisms provide sufficient freedom for reshaping the austenite phase domains, and thus the intrinsic factor required for the formation of these complicated shear patterns is well‐developed ultrafine grains and/or nanograins.
Publisher: Springer Science and Business Media LLC
Date: 2023
Publisher: Elsevier BV
Date: 07-2021
Publisher: Wiley
Date: 08-08-2019
Abstract: Commercial‐purity aluminum with 99.7% purity is processed by rotational accelerated shot peening (RASP) and cold‐rolling. RASP s les are rolled at room temperature to a thickness reduction of 20% and 30%, for the purpose of surface roughness reduction and strengthening. Detailed microstructural characterization and hardness tests reveal that cold‐rolling cause grain growth at the surfaces of RASP s les from ≈472 to ≈1000 nm. Moderate cold‐rolling is effective in smoothing the surface of RASP s les, while improving strength and maintaining ductility. However, cold‐rolling to more than 30% thickness reduction eventually diminishes the gradient nanostructure. During cold‐rolling of RASP s les, a transition zone with strong strain incompatibility is noticed by a sharp rise in hardness at some point of the hardness‐distribution curve from the surface to the core of the s le. This transition zone is a result of quick generation of geometrically necessary dislocations. Although the transition zone with strong strain incompatibility is short‐lived, it is anticipated to be common among gradient‐nanostructured materials under cold‐rolling condition.
No related grants have been discovered for Yang Cao.