J Mater Sci Technol ›› 2004, Vol. 20 ›› Issue (Supl.): 101-104.

• Research Articles • Previous Articles     Next Articles

Effect of Shot Peening on Surface Integrity—Influence of Low Temperature Heating

Katsuji Tosha, Jian Lu, Bruno Guelorget   

  1. Department of Mechanical Engineering,Meiji University, Kawasaki 214-8571, Japan...
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-12-28 Published:2009-10-10
  • Contact: Katsuji Tosha

Abstract: The effect of shot peening on surface integrity was described. After shot peening was performed for carbon steel under several conditions with steel shot, peened materials were heat-treated at various temperatures and times (100~600℃, 15~240 min), and then hardness, half width and surface residual stress were measured. The following results are obtained: (1) non-affected layer induces compressive residual stresses on the peened surface and surface layer, (2) hardness increases after heating at 200~400℃, but decreases in case of 600℃, (3) compressive residual stresses decrease after all heat treatments, (4) microstructure may be recovered by heat treatment at low temperature

Key words: Shotpeening, Surface integrity, Hardness, Residual stress