Electronics Incorporated - The Shot Peener - Shot Peening Library
Title: Residual Stresses And Retained Austenite In Shot Peened Steels
Author: Kirk, D.
Source: Conf Proc: ICSP-1, (p.271-278)
Publication year 1981
Document number: 1981057
Number of pages: 7
Abstract:
X-ray diffractometry has been used to examine the variation of residual stress across shot-peened surfaces, the transformation of austenite to martensite on peening and the
decay of surface residual stress during fatigue testing of peened specimens. It is shown that masking gives rise to tensile surface residual stresses adjacent to the peened
area. Peening of austenitic stainless steel produces surface martensite in amounts that depend upon the composition of the steel. Transformation of retained austenite on
peening of carburized steel is found to give a substantial improvement in the surface and subsurface residual stresses. Shot-peened austenitic stainless steel is found to
lose its compressive surface residual stress on fatigue testing at high levels of applied alternating stress. The fatigue and corrosion fatigue properties of the
shot-peened stainless steel (321, 270, 247 and 233) are then found to be inferior to those of as-polished steel but are superior at lower stress levels.
Descriptors: Austenitic stainless steels-- Mechanical properties; Shot peening; Residual stress; Retained austenite; Corrosion fatigue
Download full text pdf file
www.shotpeener.com
This page last revised: 04/24/2008