Bulk and Micro-Scale Compressive Properties of a Pd-based Bulk Metallic Glass

Journal Article · Mon Jan 01 00:00:00 EST 2007 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2007.05.025· OSTI ID:936033

Schuster, Brian E. ^[1]; Wei, Qiuming ^[2]; Ervin, Mathew H. ^[1]; Hruszkewycz, Stephan ^[3]; Miller, Michael K ^[4]; Hufnagel, Todd C. ^[3]; Ramesh, Kaliat T. ^[3]

---

1. U.S. Army research Laboratory, Adelphi, MD
2. University of North Carolina, Charlotte
3. Johns Hopkins University
4. ORNL

We present quasi-static, room temperature compression data for Pd{sub 40}Ni{sub 40}P{sub 20} metallic glasses for both bulk and microscale specimens. At all sizes, plastic flow is localized in shear bands which are accompanied by sudden strain bursts in the microscale tests. We show a modest ({approx} 9%) increase in the 0.2% offset yield strength in going from bulk specimens to the smallest measured ({approx} 2 {micro}m), and attribute this increase to the effect of defects on shear band initiation, rather than to an intrinsic length scale dependence of plastic deformation.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Shared Research Equipment Collaborative Research Center
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 936033
• Journal Information: Scripta Materialia, Vol. 57, Issue 6; ISSN 1359-6462
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPRESSION
DEFECTS
DEFORMATION
GLASS
METALLIC GLASSES
PLASTICS
SHEAR
STRAINS
YIELD STRENGTH