Electronic-Level Design of Stress-Corrosion Resistant Alloys: Quantum Steels

Abstract

As part of an integrated computational materials design effort, quantum mechanical calculations have predicted the roles of impurity and alloying elements in grain boundary cohesion to support design of hydrogen-resistant ultrahigh-strength steels. Predicted thermodynamic quantities have been integrated in systems design of new steels employing W, Re and B for enhanced cohesion. A prototype steel has demonstrated an ultimate tensile strength of 330 ksi with good toughness and ductility, while maintaining desired grain boundary composition.

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Document Details

Document Type
Technical Report
Publication Date
Jul 24, 2002
Accession Number
ADA403902

Entities

People

  • A. J. Freeman
  • D. E. Ellis
  • Gregory B. Olson

Organizations

  • Northwestern University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bonding
  • Boundaries
  • Cohesion
  • Corrosion
  • Crystal Structure
  • Elements
  • Embrittlement
  • Grain Boundaries
  • Hydrogen
  • Impurities
  • Materials
  • Materials Science
  • Models
  • Stress Corrosion
  • Systems Engineering
  • Tensile Strength
  • Toughness

Fields of Study

  • Materials science

Readers

  • Computational Fluid Dynamics (CFD)
  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Microelectronics
  • Quantum Computing