Abstract
Nickel aluminide containing 23·2 at.-%Al and 0·1 at.-%B was cold rolled and fully recrystallised at 825, 850, 875, 900, 925, 975, and 1000°C. Increase in grain size as a function of isothermal annealing time at these temperatures was measured. All the data showed excellent fit with the developed equations. The value of m, the exponent of the grain growth equation (Dm - Dm0 = Kt), was 2·5. The activation energy for grain growth was 263 kJ g-atom-1. Small changes in the boron content had an appreciable effect on the kinetic parameters. This was attributed to the solute drag effect of boron.
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References
1.
STOLOFF
N. S.
: Int. Mater. Rev ., 1989 , 34 , 153 .
2.
Hu
H.
and
RATH
B. B.
Metall. Trans ., 1970 , 1 , 3181 .
3.
BAKER
I.
,
VIENS
D. V.
, and
SCHULSON
E. M.
J. Mater. Sci ., 1984 , 19 , 1799 .
4.
ZHOU
B.
,
CHOU
Y. T.
, and
LIU
C. T.
in Proc. 6th Int. Symp. on Intermetallic Compounds (JIMIS-6)’, Sendai, Japan, June 1991, Japan Institute of Metals, 779.
5.
CHATURVEDI
M. C.
,
BANERJEE
S.
, and
JENA
A. K.
Scr. Mater ., 1997 , 36 , 269 .
6.
LIU
C. T.
,
WHITE
C. L.
, and
HORTON
J. A.
Acta Metall ., 1985 , 33 , 213 .
7.
HOSHINO
K.
,
ROTHMANS
S. J.
, and
AVERBACK
R. S.
Acta Metall ., 1988 , 36 , 1271 .
8.
JENA
A. K.
,
SAHAY
S. S.
, and
MATHUR
R. P.
in ‘Structural intermetallics’ (ed.
Darolia
R.
et al), 425; 1993, Warrendale, PA, TMS.
9.
JENA
A. K.
and
CHATURVEDI
M. C.
‘Phase transformations in materials’ , 290 ; 1992 , Englewood Cliffs, NJ , USA, Prentice Hall .
10.
PATTERSON
B. R.
, and
LIU
Y.
Metall. Trans. A , 1992 , 23A , 2481 .
11.
St
FRANK
SODERVALL
U.
and
HERZIG
Ch.
Phys. Status Solidi (b) , 1995 , 191 , 45 .
12.
GLEITER
H.
and
CHALMERS
B.
Prog. Mater. Sci ., 1972 , 16 , 1 .
13.
PETERSON
N. L.
: Int. Met. Rev ., 1983 , 28 , 65 .
14.
CERMAK
J.
,
RUVZICKOVA
J.
,
STBUKAL
I.
, and
POKORNA
A.
Scr. Mater ., 1977 , 37 , 31 .
15.
KUNG
H.
,
RASMUSSEN
D. R.
, and
SASS
S. L.
Scr. Metall ., 1991 , 25 , 1277 .
16.
HORTON
J. A.
and
MILLER
M. K.
in ‘High-temperature ordered intermetallic alloys II’, MRS Symp. Proc., Vol. 81 , 105; 1987, Pittsburgh, PA, Materials Research Society.
17.
GORDON
P.
and
VANDERMEER
R. V.
‘Recrystallization, grain growth, and textures’ , 205 –265 ; 1966 , Materials Park, OH , USA, American Society for Metals .
18.
JUVE-DUC
D.
,
TREHEUX
D.
, and
GUIRLANDENG
P.
Scr. Metall ., 1978 , 12 , 1107 .
19.
HUANG
X.
,
CHATURVEDI
M. C.
,
RICHARDS
N. L.
, and
JACKMAN
J.
Acta Mater ., 1997 , 45 , 3085 .
20.
LIU
J. -M.
and
wu
Z.-C.
Scr. Mater., 1997, 37, 385.
21.
NIELSEN
J. P.
: in ‘Recrystallization, grain growth and texture’ , 286 ; 1966 , Materials Park, OH , USA, American Society for Metals .