Combined macrosopic and microscopic approach to the fracture of metals, period July 1974--June 1975. Technical progress report No. 38

Technical Report · Tue Jul 01 04:00:00 EDT 1975

DOI:https://doi.org/10.2172/4143830· OSTI ID:4143830

Gurland, J.; Rice, J. R.

During the report period major studies have been completed on (1) the microscale fracture conditions for the brittle and ductile fracture initiation modes at a macroscopic crack tip, (2) the formulation of dilational plasticity constitutive relations for void containing materials as applied to the inception of ductile rupture, (3) cavity growth during diffusive rupture processes as encountered in creep rupture at low stress but high temperature, and (4) particle and boundary strengthening mechanisms in carbon steels. In addition, work has continued on crack tip modeling by finite elements and mechanisms of ductile void growth near a crack tip. (auth)

• Research Organization: Brown Univ., Providence, R.I. (USA)
• NSA Number: NSA-33-007816
• OSTI ID: 4143830
• Report Number(s): COO--3084-38
• Country of Publication: United States
• Language: English

Related Subjects

*CARBON STEELS-- FRACTURE PROPERTIES
360103* --Materials--Metals & Alloys--Mechanical Properties
BRITTLENESS
CRACKS
CREEP
DUCTILITY
METALS
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
PLASTICITY
RUPTURES
STRESSES
TEMPERATURE DEPENDENCE
VOIDS