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Title: THE TRANSFORMATION TEMPERATURES OF HIGH-PURITY URANIUM. Work completed: December 31, 1957. Final Report--Metallurgy Program 3.1.1.

Abstract

The transformation temperatures of high-purity uranium were determined by thermal analysis and dilatometry. Thermal analysis methods used include one in which the rates of heating and cooling were controlled by a differential thermocouple, and another in which repeated thermal analyses were made at independently controlled rates. The solid-state transformation temperatures and the logarithm of the heating or cooling rates at relatively low rates are related linearly. The extrapolated functions intersect at a point where the disturbing effects of hysteresis, superheating and undercooling disappear, i.e., at the equilibrium temperature. The mean transformation temperatures are 667 deg C for alpha in equilibrium beta and 775 deg C for beta in equilibrium gamma . The mean temperature for melting and freezing is 1132 deg C. (auth)

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Lab., Ill.
OSTI Identifier:
4160876
Report Number(s):
ANL-5957
NSA Number:
NSA-14-022000
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-60
Country of Publication:
United States
Language:
English
Subject:
METALS, CERAMICS, AND OTHER MATERIALS; ALLOTROPY; CONTROL; COOLING; DIAGRAMS; EXPANSION; HIGH TEMPERATURE; HYSTERESIS; IMPURITIES; MELTING POINTS; QUANTITATIVE ANALYSIS; REACTION KINETICS; SUPERHEATING; TEMPERATURE; THERMAL ANALYSIS; THERMOCOUPLES; URANIUM; URANIUM- ALPHA; URANIUM-BETA; URANIUM-GAMMA

Citation Formats

Blumenthal, B., Baumrucker, J.E., and Lloyd, L.T. THE TRANSFORMATION TEMPERATURES OF HIGH-PURITY URANIUM. Work completed: December 31, 1957. Final Report--Metallurgy Program 3.1.1.. United States: N. p., 1960. Web. doi:10.2172/4160876.
Blumenthal, B., Baumrucker, J.E., & Lloyd, L.T. THE TRANSFORMATION TEMPERATURES OF HIGH-PURITY URANIUM. Work completed: December 31, 1957. Final Report--Metallurgy Program 3.1.1.. United States. doi:10.2172/4160876.
Blumenthal, B., Baumrucker, J.E., and Lloyd, L.T. Wed . "THE TRANSFORMATION TEMPERATURES OF HIGH-PURITY URANIUM. Work completed: December 31, 1957. Final Report--Metallurgy Program 3.1.1.". United States. doi:10.2172/4160876. https://www.osti.gov/servlets/purl/4160876.
@article{osti_4160876,
title = {THE TRANSFORMATION TEMPERATURES OF HIGH-PURITY URANIUM. Work completed: December 31, 1957. Final Report--Metallurgy Program 3.1.1.},
author = {Blumenthal, B. and Baumrucker, J.E. and Lloyd, L.T.},
abstractNote = {The transformation temperatures of high-purity uranium were determined by thermal analysis and dilatometry. Thermal analysis methods used include one in which the rates of heating and cooling were controlled by a differential thermocouple, and another in which repeated thermal analyses were made at independently controlled rates. The solid-state transformation temperatures and the logarithm of the heating or cooling rates at relatively low rates are related linearly. The extrapolated functions intersect at a point where the disturbing effects of hysteresis, superheating and undercooling disappear, i.e., at the equilibrium temperature. The mean transformation temperatures are 667 deg C for alpha in equilibrium beta and 775 deg C for beta in equilibrium gamma . The mean temperature for melting and freezing is 1132 deg C. (auth)},
doi = {10.2172/4160876},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1960},
month = {6}
}