Method of Shot Peening Processing and Article Processed Thereby, and Peening Material and Use Thereof

Author:  A.Inoue, J.Kurosaki, K.Okumura, K.Kajita
Source:  US Patent 6,658,907 B2
Doc ID:  2003008
Year of Publication:  2003
Abstract:  
ABSTRACT A method for shot peening wherein peening shot having a Vickers hardness (Hv) in the range of 900-1100 and a Young's modulus of 200,000 MPa or less, is used, and wherein a treated article is obtained by such a method that has a maximum residual compressive stress of 1600 MPa or more and a surface roughness of 5 microns or less.