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Title: Influence of Pre-Annealing on Surface and Surface Layer Characteristics Produced by Shot Peening
Author: Tosha, Lu, Retraint, Guelorget, Iida
Source: Conf Proc: ICSP-8 Sept. 16-20, 2002 Garmisch-Partenkirchen, Germany
Publication year 2002
Document number: 2002024
Number of pages: 8
Abstract:
Authors
Katsuji Tosha, Meiji Univ. Higashimita, Tama-ku, Tawasaki, Japan
Jian Lu, Delphine Retraint, Bruno Guelorget, Universite de Technologie de Troyes, Rue Marie Curie, Troyes, France
Kisuke Iida, Society of Shot Peening Technology of Japan, c/o Meiji Univ. Kawasaki, Japan
Introduction
Several effects produced by shot peening for fatigue strength, stress corrossion cracking, wear resistance, heat transfer and flow resistance are reported in many papers.
Their factors relative to those effects are surface roughness, residual stresses, hardness and texture. In general, peening effects for fatigue strength are influenced by
compressive residual stresses and work hardening [1,2,3], and for heat transfer or radiation is influenced by surface roughness and affected layer [4,5], but their relations
with each factors are not always simple. The most important factor of the effect for fatigue strength is residual stress, and residual stress value changes with the texture
of work material and the measuring ways.
In this experiment, in order to clarify the influences of shot peening on the surface roughness, hardness distribution, half width and residual stress, work materials with
several different hardness produced by different annealing conditions were peened, and the influence of pre-annealing on surface and surface layer characteristics was
studied.
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