Compressive Flow Behavior of Mg54Cu28Ag7Y11 in the Supercooled Liquid Region (Preprint)

reportActive / Technical Report | Accession Number: ADA490772 | Open PDF

Abstract:

Uniaxial compression tests of Mg54Cu28Ag7Y11 metallic glass were performed in the supercooled liquid region 468 K at a strain rate range of 5x10exp-4 - 2x10exp -4 sexp-1. In the course of testing, shear thickening behavior was observed. The deformation behavior of the glassy metal is discussed with special emphasis on the stress overshoot commonly reported in the metallic glass literature, relaxation behavior, and the previously unreported shear thickening behavior observed. Two potential mechanisms are presented to explain the deformation behavior of the glassy metal.

Author(s):
Ross, Neal C. ; Mishra, Rajiv S. ; Senkov, Oleg N. ; Miracle, Daniel B.
Author Organization(s):
MISSOURI UNIV-ROLLA
Descriptive Note:
Journal article
Supplementary Note:
The original document contains color images. All DTIC reproductions will be in black and white. Submitted for publication to Scripta Materialia.
Pagination:
0009

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFRL-RX-WP-TP-2008-4347
Contract/Grant Number(s):
FA8650-04-C-5704
Task Number(s):
25
Project Number(s):
2865
Monitor Series:
TP-2008-4347, AFRL-RX-WP
 Subject Terms
Joint Capability Areas:
JCA_1_Force Support; JCA_1.2_Force Preparation; JCA_5_Command and Control; JCA_1.2.3_Educating; JCA_1.3_Human Capital Management; JCA_8_Building Partnerships
Modernization Areas:
Microelectronics
Communities of Interest:
Advanced Electronics
Descriptor(s):
*DEFORMATION, *COMPRESSION, *COMPRESSIBLE FLOW, TENSILE PROPERTIES, CRYSTALLIZATION, GLASS, ROOM TEMPERATURE, RELAXATION, BEHAVIOR, KINETICS, NONNEWTONIAN FLUIDS, COMPRESSIVE PROPERTIES, LIQUIDS, REPRINTS, MAGNESIUM ALLOYS, METALS
Field(s)/Group(s):
Fluid Mechanics, Mechanics
Keyword(s):
*SUPERCOOLED LIQUIDS, BMG(BULK METALLIC GLASS), SCLR(SUPERCOOLED LIQUID REGION), METALLIC GLASSES, PE78011F, WUAFRL286525100000
Report Date:
2007 Nov 01
Creation Date:
2009 Dec 31