Method of increasing the phase stability and the compressive yield strength of uranium-1 to 3 wt. % zirconium alloy
A method is described for increasing the phase stability and the compressive yield strength of a corrosion resistant uranium-1 to 3 wt.% zirconium alloy comprising the steps of reducing the thickness of a homogeneous ingot of the alloy by upset forging, rolling the forged ingot into a plate, heating the plate in vacuum to a temperature about the gamma transformation temperature and water quenching the plate to ambient temperature with the alloy exhibiting alpha prime and equilibrium alpha plus delta phases. The improvement described here consists of the steps of cold rolling the plate after the quenching to further reduce the thickness of the plate, aging the cold rolled plate at a first temperature, thereafter aging the cold rolled plate at a second temperature higher than the first temperature for converting alpha prime phase into additional equilibrium alpha and delta phases, and cooling the plate to ambient temperatures.
- Assignee:
- Dept. of Energy, Washington, DC
- Patent Number(s):
- US 4604148
- OSTI ID:
- 5247401
- Resource Relation:
- Patent File Date: Filed date 22 Nov 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
URANIUM BASE ALLOYS
COMPRESSION STRENGTH
FORGING
PHASE STUDIES
ROLLING
STABILITY
YIELD STRENGTH
ZIRCONIUM ALLOYS
AGING
AMBIENT TEMPERATURE
COLD WORKING
CORROSION RESISTANCE
EQUILIBRIUM
HEATING
QUENCHING
TRANSITION TEMPERATURE
WATER
ACTINIDE ALLOYS
ALLOYS
FABRICATION
HYDROGEN COMPOUNDS
MATERIALS WORKING
MECHANICAL PROPERTIES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
URANIUM ALLOYS
360101* - Metals & Alloys- Preparation & Fabrication
360102 - Metals & Alloys- Structure & Phase Studies
360103 - Metals & Alloys- Mechanical Properties