Abstract
Damping capacities of Mg2Si/Mg–9Al after aging treatment at different temperatures and times were investigated. The present paper focuses on the relationship between damping capacities and aging temperature and time. Results show that strain independent damping capacities increase and strain dependent damping values decrease for long time aging. Particular emphasis is placed on the characteristics of grain boundary damping peaks at high temperature. Damping peaks produced by the relaxation of grain boundaries have lower temperature with smaller activation energy when aging time is prolonged to 12 h, which can be explained by the growth up and coarsening of precipitates around grain boundaries.
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References
1.
Ritchie
I.
,
Pan
Z. L.
,
Sprungann
K. W.
,
Schmidt
H. K.
and
Dutton
R.
Can. MetalL Q ., 1987 , 26 , 239 –244 .
2.
Luo
A.
and
Pekguleryuz
M. O.
J. Mater. Sci ., 1994 , 29 , 5259 –5271 .
3.
Mordike
B. L.
and
Ebert
T.
Mater. Sci. Eng. A , 2001 , 302A , 37 –45 .
4.
Lambri
O. A.
and
Riehemann
W.
Scr. Mater ., 2005 , 52 , 93 –97 .
5.
Erchoy
S.
,
Riehemann
W.
,
Gabor
P.
,
Eigenfeld
K.
and
Podobed
O.
Mater. ScL Eng. A , 2002 , 18A , 198 –200 .
6.
Narasimalu
S.
,
Calvin
H. G.
and
Manoj
G. J.
J. Alloy. Compd , 2003 , 352 , 106 –110 .
7.
Zhang
Z. Y.
,
Zeng
X. Q.
and
Ding
W. J.
Mater. ScL Eng. A , 2005 , 392A , 150 –155 .
8.
Lambri
O. A.
,
Riehemann
W.
,
Salvatierra
L. M.
and
Garcia
J. A.
Mater. ScL Eng. A , 2004 , 373A , 146 –157 .
9.
Schaller
R. J.
: J. Alloy. Compd , 2003 , 355 , 131 –135 .
10.
La
X.Z.
Zeng
Q.
,
Ding
W. J.
and
Zhu
Y. P.
Mater. ScL Technol , 2001 , 17 , 207 –214 .
11.
Mabuchi
M.
and
Higashi
K.
Metall Mater. Trans ., 1996 , 11 , 4611 –4618 .
12.
Garboggini
A.
and
Mchane
H. B.
Mater. ScL Technol , 1994 , 10 , 763 –769 .
13.
Crawley
A. F.
and
Millken
K. S.
Acta Metall ., 1974 , 22 , 557 –564 .
14.
Celotto
S.
and
Bastow
T. J.
Acta Mater ., 2001 , 49 , 41 –51 .
15.
Duly
D.
,
Simon
J. P.
and
Brechet
Y.
Acta Mater ., 1995 , 43 , 101 –106 .
16.
Granto
A.
and
Lucke
K.
J. Appl. Phys ., 1956 , 27 , 583 –593 .
17.
Esnouf
C.
and
Fantazzi
G.
J. Phys ., 1981 , 42 , 445 –452 .
18.
No
M. L.
,
Oleaga
A. O.
,
Esnouf
C.
and
Juan
J. S.
Phys. Stat. Sol. A , 1990 , 120A , 419 –427 .
19.
Lambri
O. A.
,
Riehemann
W.
,
Salvaterra
L. M.
and
Garcia
J. A.
Mater. ScL Eng. A, 2004, 373A, 146 –157 . K. Schmidt and