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Title: Comparison Of Peening Techniques On 304 Austenitic Stainless Steel
Author: S Clitheroe, MTurski, A Evans, J Kelleher, D Hughe
Source: Conf Proc: ICSP-10 Tokyo, Japan 2008
Publication year 2008
Document number: 2008044
Number of pages: 5
Abstract:
ABSTRACT
This paper compares a range of peening techniques applied to 8 mm thick 304 austenitic stainless steel test samples. As new peening techniques become established, a range of
peening techniques have become available for the engineer. This paper aims to compare two relatively new techniques, laser shock peening (LSP) and ultrasonic impact
treatment (UIT), against more conventional shot peening (SP). This work has been carried out in context of mitigation against environmentally assisted cracking, where
surface finish, levels of plastic work in addition to depth and magnitude of compressive residual stress are relevant. Residual strain depth profiles have been measured
using neutron diffraction and are compared in relation to intensity and depth of compressive residual stress introduced into a 304 austenitic stainless steel sample. Initial
results show significant differences in the depth of compressive residual strain for each peening approach.
KEY WORDS
Shot peening, laser shock peening, ultrasonic impact treatment, residual stress, Neutron diffraction.
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This page last revised: 03/22/2010