-
~
--1
EXP HEAT 169
-
t-
L
e
100
,
i
EXP HEAT 171 - 0 5 % Z r
0 3
ORNL--DWG
_.
E X P HEAT 1 6 8 - 0 % Zr
z
224
-0
,
44 % Z r
I
1
E X P HEAT 474-1% Z r -0.1% R e
n 80
EXP HEAT 170 -0.3 % Z r
1
I
EXP HEAT 115 ---1%
i
Lr - 4%
61
,
(1837
Re
Id
u
4400
2200
1800
2600
4400
2200
1800
2 6 0 0 1400
1800
2200
2600
TESTING TEMPERATURE (OF)
Fig. Symbols:
18.6.
R e s u l t s o f t h e H o t - D u c t i l i t y Study Showing t h e E f f e c t of Z i r c o n i u m o n the Modified H a s t e l l o y
O.H.,tested
on heating;
URNL-DWG
ALLOY 168
474
”O
80
r
6 7 11838
NOKlhiAL COMPOSITION ( w t % I NI Mo Cr Fe Zr BAL i 2 7 B A L 12 7 05
MSRE GRADE HASTELLOY N B A L
46
7
F i g . 18.7.
40
4
T E S T E b I N G
5
20
I
a r lx
O
z 100 0 0 3
a
80
TESTED ON COOLING
1.1
MSRF
IT
60
GRADE H N
40
20 0 1409
1600
T h e H o t - D u c t i l i t y R e s u l t s of Selected
Alloys.
60
-a-”
N.
O.C., tested on c c o l i n g .
1800 2000 TEST TEMPERATURE
F)
2200
2400
circular weld b e a d s w a s 6 in. ( s e e F i g . 18.8). T h e welds were made with stationary inert-gas tungsten arc torches while the d i s k rotated around i t s center in a vertical plane. T h i s technique w a s s e l e c t e d i n order t o minimize t h e bending effect a s s o c i a t e d with the transverse shrinkage. For the radius and t h i c k n e s s ratio of our specimen, it is correct t o assume that the s t r e s s distribution a s s o c i a t e d with t h e weld shrinkage is planar. T h e perpendicular shrinkage is negligible; that i s , there are no s t r e s s e s perpendicular t o the plane of the d i s k . With t h e s e assumptions, the s t r e s s distribution may b e determined by measuring only t h e tangent i a l s t r a i n on t h e r i m of the d i s k while machining a s e r i e s of concentric s e c t i o n s beginning at t h e disk center. We followed e s s e n t i a l l y t h e “boring S a c h s ” nrethod which w a s s e t up for pipes. Since plane