Published 1996 | Version v1
Book Metadata-only

Toughness and subcritical crack growth in Nb/Nb3Al layered materials

Creators

  • 1. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering

Description

A brittle intermetallic, Nb3Al, reinforced with a ductile metal, Nb, has been used to investigate the resistance curve and cyclic fatigue behavior of a relatively coarse laminated composite. With this system, the toughness of Nb3Al was found to increase from ∼1 MPa√m to well over 20 MPa√m after several millimeters of stable crack growth; this was attributed to extensive crack bridging and plastic deformation within the Nb layers in the crack wake. Cyclic fatigue-crack growth resistance was also improved in the laminate microstructures compared to pure Nb3Al and Nb-particulate reinforced Nb3Al composites with crack arrester orientations in the laminate providing better fatigue resistance than either the matrix or pure Nb

Additional details

Publishing Information

Publisher
Materials Research Society.
Imprint Place
Pittsburgh, PA (United States)
ISBN
1-55899-337-1
Imprint Title
Layered materials for structural applications
Imprint Pagination
325 p.
Series
Materials Research Society symposium proceedings, Volume 434.
Journal Page Range
p. 243-248.

Conference

Title
Spring meeting of the Materials Research Society (MRS).
Dates
8-12 Apr 1996.
Place
San Francisco, CA (United States).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
28063426
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
ALUMINIUM ALLOYS; COMPOSITE MATERIALS; CRACK PROPAGATION; EXPERIMENTAL DATA; FATIGUE; FRACTURE MECHANICS; FRACTURE PROPERTIES; HOT PRESSING; INTERMETALLIC COMPOUNDS; LAYERS; NIOBIUM; NIOBIUM ALLOYS
Descriptors DEC
ALLOYS; DATA; ELEMENTS; FABRICATION; INFORMATION; MATERIALS; MATERIALS WORKING; MECHANICAL PROPERTIES; MECHANICS; METALS; NUMERICAL DATA; PRESSING; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS

Optional Information

Funding organization
Department of the Air Force, Washington, DC (United States).
Secondary number(s)
CONF-960401--.