Temperature dependence of effective stress in severely deformed ultralow-carbon steel

Masaki Tanaka, Kenji Higashida

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)

抄録

The effects of severe plastic deformation on the thermal activation of dislocation gliding in ultralow-carbon steel at low temperatures were investigated. This was done by measuring the temperature dependences of the effective stress, activation volume and activation energy. It was found that the values of all these parameters were lower than those for coarse-grained specimens at low temperatures. In coarse-grained materials, the activation energy should increase with a decrease in the effective stress. This phenomenon, which seemed counterintuitive initially, could be physically interpreted on the basis of the fluctuation in the athermal stress.

本文言語英語
ページ(範囲)1979-1992
ページ数14
ジャーナルPhilosophical Magazine
96
19
DOI
出版ステータス出版済み - 7 2 2016

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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