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Mechanical properties of dilute uranium alloys at elevated temperatures.

01 Jan 1966-

About: The article was published on 1966-01-01 and is currently open access. It has received 1 citation(s) till now. The article focuses on the topic(s): Uranium.
Topics: Uranium (55%)

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MCW
-
1505
AEC
Research
and
Development
Report
h-
?
I
.-
A__
M
THE MECHANICAL PROPERTIES
OF
DILUTE
URANIUM
ALLOYS
AT ELEVATED TEMPERATURES
LEG
b
WELDON SPRING PLANT
MALLINCKRODT
CHEMICAL
WORKS
URANIUM
DIVISION
Contract
No-
w-
I4
-
108
-
Eng
-
€3

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MCW- 1505
Q
\
W'
i
UC-25, Metals, Ceramics
[TID-4500, 48th Edition)
and Materials
TOPICAL REPORT
THE
MECHANICAL
PROPERTIES
OF
I
DILUTE
URANIUM
ALLOYS
AT
ELEVATED
TEMPERAT~S
M.
F.
Nolan
August 1, 1966
Mallinckrodt Chemical
Works
Uranium Division
Weldon Spring, Missouri
This
document
is
@
PUBLICLY
RELEASABLE
~
s-
Authorizing
Of€iciai
Date:
Y
-17
-6)

Citations
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Journal ArticleDOI
Abstract: This work investigated brittle fracture of polycrystalline materials due to thermal stresses arising from anisotropic thermal expansion. We used phase-field fracture simulations with the properties of α -uranium ( α -U) and assumed a linear elastic mechanical response. Three-dimensional simulations were used to predict fracture for various conditions and crystallographic textures. We found that fracture was more pronounced during cooling than during heating because the anisotropy increased with temperature. We also found that the total crack surface area increased with increasing average misorientation, while the net shape change of the material decreased with increasing misorientation. Two-dimensional simulations in which one crystallographic coefficient of thermal expansion (CTE) was set to zero indicated that the largest difference between the CTE in the three crystallographic directions dominates the fracture.

4 citations


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