Accession Number : ADA332637

Title :   Effects of Texture on the Plastic Anisotropy of Orthorhombic Sheets of Cubic Metals: A Group-Theoretic Analysis

Descriptive Note : Final technical rept. 15 Sep 94-14 Sep 97

Corporate Author : KENTUCKY UNIV LEXINGTON

Personal Author(s) : Man, Chi-Sing

PDF Url : ADA332637

Report Date : 13 NOV 1997

Pagination or Media Count : 18

Abstract : A plastic potential with seven texture coefficients, which shows explicitly how crystallographic texture would affect the plastic flow of sheet metals (e.g., aluminum) in metal-forming processes was developed. Formulae relating plastic strain ratios (r-values) of sheet metals to their texture coefficients, as predicted by this plastic potential, were derived. The derivation of this new plastic potential was based physically on the principle of material frame-indifference and mathematically on the theory of group representations and theory of invariants. The group-theoretic method described herein could be carried further if derivation of a plastic potential with higher texture coefficients should become desirable.

Descriptors :   *ANISOTROPY, *TEXTURE, *PLASTICS, *CRYSTALLOGRAPHY, *SHEET METAL, COMPOSITE MATERIALS, STRAIN(MECHANICS), ALLOYS, ALUMINUM, PLASTIC PROPERTIES, PLASTIC FLOW.

Subject Categories : Metallurgy and Metallography
      Crystallography
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE