A new deformation region and how low do you go? - "intrinsic deformation limit"

Junjie Shen, Kenichi Ikeda, Satoshi Hata, Hideharu Nakashima

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The creep deformation in pure aluminum was investigated using helicoid spring samples at room temperature, 298 K, and σ < 1.19 MPa. It was found that the stress exponent is n = 0, which means the creep behavior in this region is independent on applied stress but some physical properties of materials. The creep behavior was suggested to be controlled by surface diffusion based on the strongly effect of surface area on creep behavior only in this creep region (n = 0). The threshold creep rate, th ∑th, called "intrinsic deformation limit", decided by surface diffusion was suggested. This discovery provided a new perspective to understand the extremely slow deformation in the nature.

Original languageEnglish
Title of host publicationHigh Performance Structure Materials
EditorsYafang Han, Junpin Lin, Chengbo Xiao, Xiaoqin Zeng
PublisherTrans Tech Publications Ltd
Pages559-563
Number of pages5
ISBN (Print)9783037856086
DOIs
Publication statusPublished - 2013
EventChinese Materials Congress 2012, CMC 2012 - Taiyuan, China
Duration: Jul 13 2012Jul 18 2012

Publication series

NameMaterials Science Forum
Volume747-748
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

OtherChinese Materials Congress 2012, CMC 2012
CountryChina
CityTaiyuan
Period7/13/127/18/12

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Shen, J., Ikeda, K., Hata, S., & Nakashima, H. (2013). A new deformation region and how low do you go? - "intrinsic deformation limit". In Y. Han, J. Lin, C. Xiao, & X. Zeng (Eds.), High Performance Structure Materials (pp. 559-563). (Materials Science Forum; Vol. 747-748). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.747-748.559