Research And Development On Advanced Graphite Materials. Volume XVIII - High Temperature Tensile Creep Of Graphite

Item

Title
Research And Development On Advanced Graphite Materials. Volume XVIII - High Temperature Tensile Creep Of Graphite
Date
1964
Index Abstract
Contrails and DTIC
Photo Quality
Incomplete
Report Number
WADD TR 61-72 Volume 18
Corporate Author
Research Laboratory of National Carbon Company Division of Union Carbide Corporation
Laboratory
AF Materials Laboratory
Extent
44
Identifier
AD0435679
AD0435679
Access Rights
OTS
Distribution Classification
1
Contract
AF 33(616)-6915
DoD Project
7350
DoD Task
735002
DTIC Record Exists
Yes
Distribution Change Authority Correspondence
None
Report Availability
Full text available
Date Issued
1964-03
Abstract
Tensile creep tests under conditions of constant load and constant temperature were performed on four different types of graphite. The temperature ranged from 2300° to 2900°C. Some of the data were fitted to creep equations and the temperature and stress dependence of the steady-state creep rates were investigated. For National Carbon Company grade ATJ graphite, the creep rates yielded an activation energy of 124 Kcal/mole and varied with the fourth power of the stress for specimens with two different grain orientations. The activation energy was found to be the same for all the other graphites which were tested. The creep was found to be greater in the direction "against the grain" than in the direction "with the grain," and differences in creep strain and creep rate for the two orientations were found to increase as the anisotropy of the graphite was increased. For one type of graphite, the creep of specimens oriented ''with the grain'' decreased as the density increased and was not sensitive to differences in the proportions of filler and binder carbon.
Subject
Creep
Graphite
Publisher
Wright-Patterson Air Force Base, OH : AF Materials Laboratory, Aeronautical Systems Division, Air Force Systems Command
Distribution Conflict
No
Provenance
IIT
Type
report
Format
1 online resource
Creator
Seldin, E. J.
Media
WADDTR61-072volume18.pdf