Paper Title:
Formation of Nanocrystalline Structure in Steels by Air Blast Shot Peening and Particle Impact Processing
  Abstract

Surface nanocrystallization in various steels by shot peening (both air blast and ultrasonic) and particle impact processing was investigated. Nanocrystalline layers with several µm thick were successfully fabricated by these methods. In all the case, the nanocrystalline layers have extremely high hardness and separated from adjacent deformed structure regions with sharp boundaries. By annealing, the nanocrystalline layers showed substantially slow grain growth without recrystallization. Those characteristics are similar to those observed in the samples experienced ball milling and ball drop deformation.

  Info
Periodical
Materials Science Forum (Volumes 449-452)
Edited by
S.-G. Kang and T. Kobayashi
Pages
1149-1152
DOI
10.4028/www.scientific.net/MSF.449-452.1149
Citation
Y. Todaka, M. Umemoto, Y. Watanabe, K. Tsuchiya, "Formation of Nanocrystalline Structure in Steels by Air Blast Shot Peening and Particle Impact Processing", Materials Science Forum, Vols. 449-452, pp. 1149-1152, 2004
Online since
March 2004
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$32.00
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