Accession Number : ADA324751

Title :   Computer-Aided Systems Design of Advanced Steels,

Corporate Author : NORTHWESTERN UNIV EVANSTON IL DEPT OF PHYSICS AND ASTRONOMY

Personal Author(s) : Kuehmann, Charles J. ; Olson, Gregory B.

PDF Url : ADA324751

Report Date : 1995

Pagination or Media Count : 14

Abstract : The multi-institutional interdisciplinary research program of the Steel Research Group (SRG) has centered on the development of a systems approach for the design of advanced high performance steels using computer aided modelling. Initial long range studies involved the development of the theoretical foundations underlying strength, toughness, and hydrogen resistance. Mechanistic based computational models include the prediction of martensite start temperatures in high alloy steels, multicomponent coarsening kinetics in non-ideal non-dilute systems, and the martensitic transformation volume change in multicomponent systems. Modelling has successfully related the peak hardness in secondary hardening steels to the coherent driving force of the M2C carbide in para equilibrium with transient cementite. Additionally, the precipitation time scale has been related to the multicomponent coarsening coefficient of the M2C carbide with respect to the half-completion state. Within a systems design framework, these models have been successfully applied to the design of high performance alloys including stainless bearing steels, advanced armor steels, and high hardness gear steels.

Descriptors :   *COMPUTER AIDED DESIGN, *CARBIDES, *SYSTEMS APPROACH, *MARTENSITE, COMPUTERIZED SIMULATION, PHASE TRANSFORMATIONS, STAINLESS STEEL, TOUGHNESS, HARDNESS, FORCE(MECHANICS), CARBON STEELS.

Subject Categories : Properties of Metals and Alloys
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE