Bulletin of the American Physical Society
22nd Biennial Conference of the APS Topical Group on Shock Compression of Condensed Matter
Volume 67, Number 8
Monday–Friday, July 11–15, 2022; Anaheim, California
Session L04: Dynamic Properties of Complex Materials
2:00 PM–3:30 PM,
Tuesday, July 12, 2022
Anaheim Marriott
Room: Platinum 2
Chair: Leslie Lamberson, Colorado School of Mines
Abstract: L04.00005 : Structure / Property (Constitutive and Dynamic Strength / Damage) Characterization of Single-Phase FeAl
3:15 PM–3:30 PM
Presenter:
George T Gray
(Los Alamos Natl Lab)
Authors:
George T Gray
(Los Alamos Natl Lab)
Saryu J Fensin
(Los Alamos National Laboratory)
David R Jones
(Los Alamos National Laboratory)
Kenneth S Vecchio
(University of California at San Diego)
In this presentation, the results of a study quantifying the constitutive behavior of two different B2-structured FeAl intermetallics, as well as an FeAl-based metallic-intermetallic laminate (MIL) composite is presented. One textured and layered polycrystalline FeAl was fabricated using an innovative “multiple-thin-foil” configuration and “two-stage reaction” strategy. Layers of metallic Al and Fe foils were alternating stacked and then processed utilizing a combination of a multiple pressure & temperature processing procedure to produce fully-dense single-phase FeAl samples. This same approach was used to fabricate the MIL composite. An equiaxed, random polycrystalline single-phase FeAl sample was fabricated from powders to be used as a reference material. In this paper, the influence of the constitutive behavior as a function of loading orientation, temperature, and strain rate, from quasi-static to dynamic rates, is presented. The dynamic damage evolution and failure response of the three materials was probed using flyer-plate impact driven spallation experiments.
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