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Article
High-Pressure torsion-Induced Grain Growth in Electrodeposited Nanocrystalline Ni
Applied Physics Letters
  • X. Z. Liao
  • A. R. Kilmametov
  • R. Z. Valiev
  • Hongsheng Gao
  • Xiaodong Li, University of South Carolina - Columbia
  • A. K. Mukherjee
  • J. F. Blingert
  • Y. T. Zhu
Publication Date
1-9-2006
Document Type
Article
Abstract

Deformation-induced grain growth has been reported in nanocrystalline (nc) materials under indentation and severe cyclic loading, but not under any other deformation mode. This raises an issue on critical conditions for grain growth in nc materials. This study investigates deformation-induced grain growth in electrodeposited nc Ni during high-pressure torsion (HPT). Our results indicate that high stress and severe plastic deformation are required for inducing grain growth, and the upper limit of grain size is determined by the deformation mode and parameters. Also, texture evolution suggests that grain-boundary-mediated mechanisms played a significant role in accommodating HPT strain.

Citation Information
X. Z. Liao, A. R. Kilmametov, R. Z. Valiev, Hongsheng Gao, et al.. "High-Pressure torsion-Induced Grain Growth in Electrodeposited Nanocrystalline Ni" Applied Physics Letters Vol. 88 Iss. 2 (2006) p. #021909
Available at: http://works.bepress.com/xiaodong_li/4/