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Title: Influence of Retained Austenite, Strain-induced Martensite and Bending Stress upon Shot Peening-induced Residual Compressive
Author: Ando, Eto, Matsui
Source: Conf Proc: ICSP-8 Sept. 16-20, 2002 Garmisch-Partenkirchen, Germany
Publication year 2002
Document number: 2002027
Number of pages: 9
Abstract:
Authors
Kotoji Ando 1), Hirohito Eto 2) and Katsuyuki Matsui 2)
1) Yokohama National University, Yokohama, Japan, 2) Isuzu Motors LTD, Kawasaki, Japan
Abstract
To introduce large residaul compressive stresses by means of shot peening, the authors conducted an experiment using vacuum carburized and shot peened or stress peened test
pieces. The influence of arc height (Ah), shot radius (R), retained austenite (yR), strain-induced martensite (MQ) and bending stress (Qpre) upon residual compressive
stresses was investigated systematically. Residaul compressive stresses were found to be quite dependent on Ah/R, only slightly influenced by yR and hardly affected by MQ
content. Approximately, 50% of the applied Qpre was introduced as residual compressive stress. Finally, the amount of induced residual compressive stresses linearly depended
on An/R, yR and Qpre.
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