Accession Number : ADA299682

Title :   Transport Modeling of Hydrogen in Metals for Application to Hydrogen Assisted Cracking of Metals.

Descriptive Note : Final rept. 1 Sep 93-31 Dec 94,

Corporate Author : NOTRE DAME UNIV IN DEPT OF AEROSPACE AND MECHANICAL ENGINEERING

Personal Author(s) : Thomas, James P. ; Chopin, Charles E.

PDF Url : ADA299682

Report Date : 04 APR 1995

Pagination or Media Count : 234

Abstract : The focus of this research was on the development of a finite element code for solute transport and trapping in linear elastic mixtures for use in modeling the hydrogen transport process in metals undergoing hydrogen assisted cracking. Specific objectives included: (1) Completion of the development of a solute transport and trapping model with coupling between the concentration, deformation, and thermal field variables and trapping at reversible and irreversible trap sites. (2) Implementation of the above theory in a finite element code. (3) Calculation of the crack tip deformations and chemical state variables for some high strength steels under a variety of loading, environment, and material conditions. (MM)

Descriptors :   *METALS, *CRACK PROPAGATION, *HYDROGEN EMBRITTLEMENT, THERMAL PROPERTIES, FINITE ELEMENT ANALYSIS, DEFORMATION, CRACKING(FRACTURING), DISPLACEMENT, ELASTIC PROPERTIES, TRAPPING(CHARGED PARTICLES), HIGH STRENGTH ALLOYS, HYDROGEN, TRANSPORT PROPERTIES, DIFFUSION.

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE