Effects of the Peierls stress on the transition from power law creep to Harper-Dorn creep

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Acta Metallurgica et Materialia

DOI:https://doi.org/10.1016/0956-7151(94)00368-R· OSTI ID:39842

Wang, J N; Nieh, T G ^[1]

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1. Lawrence Livermore National Lab., CA (United States)

Using extensive data on metals, ceramics and silicates, it is demonstrated that power law dislocation creep transits to Harper-Dorn creep at the Peierls stress of a crystal. This transition at such a stress level is perhaps induced by the dislocation density being dependent upon the applied stress in power law creep but determined by the Peierls stress in Harper-Dorn creep.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 39842
• Journal Information: Acta Metallurgica et Materialia, Journal Name: Acta Metallurgica et Materialia Journal Issue: 4 Vol. 43; ISSN 0956-7151; ISSN AMATEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
CREEP
DISLOCATIONS
GRAIN BOUNDARIES
GRAIN SIZE
MATHEMATICAL MODELS
METALS
MICROSTRUCTURE
POISSON RATIO
SILICATES