An empirical correlation between temperature and activation energy for brittle-to-ductile transitions in single-phase materials

A. Giannattasio, M. Tanaka, T. D. Joseph, S. G. Roberts

Research output: Contribution to journalConference article

46 Citations (Scopus)

Abstract

The strain rate dependence of the brittle-to-ductile transition (BDT) temperature gives the activation energy controlling the BDT. Until recently, data were only available for a limited number of materials. Experimental data on the BDT of tungsten and other bcc metals have recently become available. We have compared all the data from different materials and sources, finding a distinctive relationship between the BDT temperature (TBDT) and the activation energy for BDT (EBDT) which holds over a wide range of materials, temperatures and activation energy values. The ratio E BDT/kTBDT gives approximately the value 25 for all the materials considered.

Original languageEnglish
Pages (from-to)87-90
Number of pages4
JournalPhysica Scripta T
VolumeT128
DOIs
Publication statusPublished - Dec 1 2007
Externally publishedYes
Event11th International Workshop on Plasma-Facing Materials and Components for Fusion Applications - Greifswald, Germany
Duration: Oct 10 2006Oct 12 2006

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics

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