Indentation of bulk amorphous metals to investigate pop-In effects / Thomas Juliano, and Mark VanLandingham, Tyler Krus ; prepared by Science and Engineering Apprenticeship Program (SEAP), U.S. Army Reseach Laboratory.

Format:

Book

Government document

Author/Creator:

Juliano, Thomas, author.

VanLandingham, Mark, author.

Krus, Tyler, author.

Contributor:

U.S. Army Research Laboratory, issuing body.

Science and Engineering Apprenticeship Program (U.S.)

Language:

English

Subjects (All):

Metallic glasses.

Physical Description:

1 online resource (vi, 14 pages) : illustrations (some color)

Distribution:

Ft. Belvoir, Va. : Defense Technical Information Center

Place of Publication:

Aberdeen Proving Ground, MD : Army Research Laboratory, July 2006.

Summary:

Bulk metallic glasses (BMG) are a fairly new class of materials that exhibit high strength, low density, and corrosive resistance, as compared to traditional metals, and are useful for various applications. Spherical depth-sensing indentation of BMG reveals stepwise displacement jumps in the load-displacement curves, known as pop-ins. These pop-ins have been found to be correlated with plastic deformation; the initial one being associated with the elastic limit of the material. The initial displacement bursts are investigated for varying stoichiometries of Zr and Hf-based BMG. Attention is focused on pressure and energy per volume at initial pop-in location as a function of different strain rates, indenter tip radius, and material composition. This research may provide further insight and understanding for macroscale behavior of BMG.

Notes:

Prepared in collaboration with Loch Raven High School, Baltimore, MD 21286. Sponsored in part by Science and Engineering Apprenticeship Program. The original document contains color images.

"ARL-CR-574."

Includes bibliographical references (page 12).

Other Format:

Print version: Indentation of Bulk Amorphous Metals to Investigate Pop-In Effects

OCLC:

227893642