-
Title
-
The Effects Of Strain Rate And Hydrogen Content on the Low Temperature Deformation Behavior Of Columbium
-
Date
-
1961
-
Index Abstract
-
Contrails and DTIC
-
Photo Quality
-
Incomplete
-
Report Number
-
WADD TR 61-44
-
Creator
-
Wilcox, B. A.
-
Klinger, R. F.
-
Brisbane, A.W.
-
Corporate Author
-
Metals and Ceramics Laboratory
-
Laboratory
-
Metals and Ceramics Laboratory
-
Extent
-
32
-
Identifier
-
AD0264858
-
AD0264858
-
Access Rights
-
OTS
-
Distribution Classification
-
1
-
Contract
-
Laboratory Research - No Contract
-
DoD Project
-
7351 - Metallic Materials
-
DoD Task
-
73521
-
DTIC Record Exists
-
Yes
-
Distribution Change Authority Correspondence
-
None
-
Abstract
-
The strain rate and temperature dependencies of the low temperature deformation behavior of fine grained arc-melted columbium, 1 part per million hydrogen (1 ppm hydrogen) were evaluated for tensile strain rates of 0.005, 0.10 and 6.0 in/in/min. The effect of hydrogen content (1, 9, and 30 ppm H) on the mechanical behavior was also investigated in the temperature range 25 to -195°C, using a tensile strain rate of 0.005/min.
The existence of a hydrogen-dislocation interaction in columbium was confirmed by: (1) calculation of an apparent activation energy for the early stages of low temperature deformation; (2) observation of a hydrogen induced strain aging peak at -50°C, for columbium containing 30 ppm H; and (3) observation of a serrated stress-strain curve at 25°C in coarse grained columbium containing 89 ppm H.
-
Report Availability
-
Full text available
-
Date Modified
-
Scanned by request 2/13/2004 submitted by Pratt & Whitney Space Propulsion (Aerospace Industry - Domestic)
-
Date Issued
-
1961-05
-
Publisher
-
Wright-Patterson Air Force Base, OH : Aeronautical Systems Division, Air Force Systems Command, United States Air Force Base
-
Distribution Conflict
-
No
-
Provenance
-
IIT
-
Type
-
report
-
Subject
-
Niobium
-
Refractory Materials
-
Deformation
-
Aging (Physiology)
-
Fracture (Mechanics)
-
Hydrogen
-
Hydrogen Embrittlement
-
Impurities
-
Cryogenics
-
Mechanical Properties
-
Metals
-
Stresses
-
Temperature
-
Tensile Properties
-
Transition Temperature
-
Format
-
1 online resource