Formation of Nanocrystalline Structure by Shot Peening

Yoshikazu Todaka; Minoru Umemoto; Yukinori Watanabe; Koichi Tsuchiya

doi:10.4028/www.scientific.net/MSF.503-504.669

Paper Titles

Mechanical Behaviour of Nanostructured Iron Fabricated by Severe Plastic Deformation under Diffusion Flow of Nitrogen
p.645

Large Strain Deformation of Single-Phase Copper Solid Solutions by Machining
p.651

Enhanced Ductility due to Grain Refinement by Equal Channel Angular Extrusion in Automotive Aluminium Alloy 6016
p.657

Heterogeneity and Anisotropy in Microstructure and Mechanical Properties of Pure Copper Processed by Equal Channel Angular Pressing
p.663

Formation of Nanocrystalline Structure by Shot Peening
p.669

Modelling of the Evolution of Dislocation Cell Misorientation under Severe Plastic Deformation
p.675

Effect of Rolling Direction on the Microstructure and Mechanical Properties of Accumulative Roll Bonding (ARB) Processed Commercially Pure 1050 Aluminum Alloy
p.681

Controlling Mechanism of Ferrite Grain Size Generated through Large Strain Deformation of 0.15C Steel
p.687

Effects of the Number of ECAP Passes and ECAP Route on the Heterogeneity in Mechanical Properties across the Sample from Titanium VT1-0
p.693

HomeMaterials Science ForumMaterials Science Forum Vols. 503-504Formation of Nanocrystalline Structure by Shot...

Formation of Nanocrystalline Structure by Shot Peening

Abstract:

The effects of the shot peening (SP) condition and the initial hardness of specimens on the formation and thickness of nanocrystalline (NC) layer were investigated. The NC structure is found to be independent of the SP techniques, air blast, impeller and ultrasonic SP. In the SP condition, the increase in the kinetic energy per one shot is effective to increase the thickness of NC layer. It is also found that there is a certain critical initial hardness of specimens to produce the NC structure by SP. The NC structure forms when the specimen hardness is lower than the shot hardness.