Electronics Incorporated - The Shot Peener - Shot Peening Library
Title: Influence Of Shot Peening On The Fatigue Behaviour Of A Precipitation Hardenable Austenitic Steel
Author: Hornbogen, Thumann, Verpoort
Source: Conf Proc: ICSP-1, (p.381-388)
Publication year 1981
Document number: 1981034
Number of pages: 7
Abstract:
In precipitation hardenable alloys the number of cycles required for crack initiation during fatigue is strongly influenced by the microscopic slip distribution. The
microscopic slip distribution can be varied in a wide range by different thermomechanical treatments. If the plastic deformation in the material is distributed
homogeneously, crack initiation requires a large number of cycles but cracks propagate quickly. To investigate the effect of the slip distribution on the fatigue behavior
the untreated condition was compared with a cold rolled (bulk deformation) and a shot peened condition (surface deformation) in A286 steel. Optimum fatigue life was
achieved by shot peening leading to an extremely homogeneous slip distribution in the surface. In addition the fatigue behavior of shot-peened specimens at high temp. was
investigated. It was found that a homogeneous slip distribution leads to a significant improvement of fatigue life, even at high test temp.
Descriptors: Superalloys-- Mechanical properties; Precipitation hardening steels-- Mechanical properties; Shot peening; Slip; Fatigue life; Crack propagation
Download full text pdf file
www.shotpeener.com
This page last revised: 03/04/2009