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Full Description
This open access book presents the novel concept of plaston, which accounts for the high ductility or large plastic deformation of emerging high-performance structural materials, including bulk nanostructured metals, hetero-nanostructured materials, metallic glasses, intermetallics, and ceramics.The book describes simulation results of the collective atomic motion associated with plaston, by computational tools such as first-principle methods with predictive performance and large-scale atom-dynamics calculations. Multi-scale analyses with state-of-the art analytical tools nano/micro pillar deformation and nano-indentation experiments are also described. Finally, through collaborative efforts of experimental and computational work, examples of rational design and development of new structural materials are given, based on accurate understanding of deformation and fracture phenomena.This publication provides a valuable contribution to the field of structural materials research.
Contents
Part I. Introduction.- 1. Plaston induced plasticity in bulk nanostructured metals.- Part II. Simulation of plaston and plaston induced phenomena.- 2. Nucleation of plaston at surface and interface of metallic materials.- 3. Atomistic study of plaston in nanostructured metals.- 4. First principles calculations of collective motion of atoms in metals.- 5. Machine learning interatomic potentials with controlled accuracy.- 6. First principles calculations of dislocation cores in HCP metals.- Part III. Experimental analyses of plaston.- 7. STEM observation of plaston in alumina.- 8. Micro-pillar deformation experiments of brittle intermetallics in steel.- 9. Nano-indentation study of steels.- 10. Synchrotron x-ray study on plaston in metals.- 11. Improvement of fatigue lifetime by controlling plaston at crack tip.- Part IV. Design and development of high performance structural materials.- 12. Development of bulk nanostructured steels.- 13. Design and development of high Mn steels.- 14. Design and development novel magnesium alloys.
