Transformation toughening in dispersed-phase systems

Gregory B. Olson*, Charles J. Kuehmann

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Quantitative analysis of the dynamic evolution of multilevel structure during martensitic transformations has provided the foundation for kinetics-based constitutive relations for transformation plasticity during both the stress-assisted and strain-induced modes of mechanically induced transformation. Application in numerical modeling of ductile fracture by microvoid-softening-induced shear localization, in conjunction with metallographic observation of crack-tip transformation and localization processes, reveals transformation toughening processes operating on three structural length scales, generally associated with the flow stabilizing influence of pressure-sensitive strain hardening provided by strain-induced transformation. Application of the phenomena via dispersed-phase transformation plasticity in ultrahigh-strength martensitic steels has demonstrated record toughness levels in both commercial and experimental alloy steels.

Original languageEnglish (US)
Title of host publicationA Symposium on the Thermodynamics, kinetics, Characterizaion and Modeling of
Subtitle of host publicationAustenite Formation and Decomposition
EditorsE.B. Damm, M.J. Merwin
Pages493-504
Number of pages12
StatePublished - Dec 1 2003
EventMaterials Science and Technology 2003 Meeting - Chicago, IL, United States
Duration: Nov 9 2003Nov 12 2003

Publication series

NameMaterials Science and Technology 2003 Meeting

Other

OtherMaterials Science and Technology 2003 Meeting
CountryUnited States
CityChicago, IL
Period11/9/0311/12/03

ASJC Scopus subject areas

  • Materials Science(all)

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