Reprint

Dislocation Mechanics of Metal Plasticity and Fracturing

Edited by
November 2020
188 pages
  • ISBN978-3-03943-264-6 (Hardback)
  • ISBN978-3-03943-265-3 (PDF)

This is a Reprint of the Special Issue Dislocation Mechanics of Metal Plasticity and Fracturing that was published in

Chemistry & Materials Science
Engineering
Summary
The modern understanding of metal plasticity and fracturing began about 100 years ago, with pioneering work; first, on crack-induced fracturing by Griffith and, second, with the invention of dislocation-enhanced crystal plasticity by Taylor, Orowan and Polanyi. The modern counterparts are fracture mechanics, as invented by Irwin, and dislocation mechanics, as initiated in pioneering work by Cottrell. No less important was the breakthrough development of optical characterization of sectioned polycrystalline metal microstructures started by Sorby in the late 19th century and leading eventually to modern optical, x-ray and electron microscopy methods for assessments of crystal fracture surfaces, via fractography, and particularly of x-ray and electron microscopy techniques applied to quantitative characterizations of internal dislocation behaviors. A major current effort is to match computational simulations of metal deformation/fracturing behaviors with experimental measurements made over extended ranges of microstructures and over varying external conditions of stress-state, temperature and loading rate. The relation of such simulations to the development of constitutive equations for a hoped-for predictive description of material deformation/fracturing behaviors is an active topic of research. The present collection of articles provides a broad sampling of research accomplishments on the two subjects.
Format
  • Hardback
License and Copyright
© 2020 by the authors; CC BY-NC-ND license
Keywords
dislocation mechanics; yield strength; grain size; thermal activation; strain rate; impact tests; brittleness transition; fracturing; crack size; fracture mechanics; Hall-Petch equation; Griffith equation; size effect; mechanical strength; pearlitic steels; suspension bridge cables; dislocation microstructure; fractal analysis; size effect; plasticity; representative volume element; dislocation structure; dislocation correlations; dislocation avalanches; nanotwin; nanograin; Au–Cu alloy; micro-compression; yield strength; Cu-Zr; ECAP; deformation; quasi-stationary; subgrains; grains; coarsening; Cu–Zr; ECAP; ultrafine-grained material; deformation; dynamic recovery; transient; load change tests; Charpy impact test; GMAW; additive manufacturing; secondary cracks; anisotropy; linear flow splitting; crystal plasticity; DAMASK; texture; EBSD; crack tip dislocations; TEM; grain rotation; fatigue; dislocation configurations; residual stress; indentation; serration; temperature; strain rate; dislocation; artificial aging; solid solution; loading curvature; aluminum alloy; holistic approach; dislocation group dynamics; dynamic factor; dislocation pile-up; yield stress; dislocation creep; fatigue crack growth rate

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