Abstract

A nonuniform distribution of temperature across the solid specimen during differential thermal analysis (DTA) can cause thermal stress. The effect of such thermal stress and the resulting thermal strain energy on the DTA results is theoretically analyzed. It is found that, for most solid metallic specimens, the temperature nonuniformity in the solid specimen is less than 0.18 °C during normal DTA operation. The thermal stress and thermal strain are usually very small due to the small size of the specimen, and they do not have a substantial effect on the DTA results.

References

1.
Fipphen
,
J. S.
and
Sparks
,
R. B.
,
Metals Progress
, Vol.
4
,
1979
, p. 56.
2.
Brown
,
M. E.
, in
Introduction to Thermal Analysis
,
Chapman and Hall
,
London
,
1988
, p. 41.
3.
Daniels
,
T.
, in
Thermal Analysis
,
John Wiley & Sons
,
New York
,
1973
, p. 119.
4.
Zhu
,
Y. T.
and
Devletian
,
J. H.
,
Metallurgical Transactions
 0026-086X, Vol.
22A
,
1991
, pp.
1993
-
1998
.
5.
Zhu
,
Y. T.
and
Devletian
,
J. H.
,
Metallurgical Transactions
 0026-086X, Vol.
23A
,
1992
, pp.
451
-
455
.
6.
Zhu
,
Y. T.
and
Devletian
,
J. H.
,
Advanced Materials & Process
, Vol.
10
,
1991
, pp.
51
-
53
.
7.
Carslaw
,
H. S.
and
Jaeger
,
J. C.
, in
Conduction of Heat in Solids
, 2nd ed.,
Oxford University Press
,
London
,
1959
, pp.
230
-
235
.
8.
Boley
,
B. A.
and
Weiner
,
J. H.
, in
Theory of Thermal Stress
,
John Wiley & Sons
,
New York
,
1960
, p. 302.
9.
Dieter
,
G. E.
, in
Mechanical Metallurgy
, 3rd ed.,
McGraw-Hill Book Co.
,
New York
,
1986
, p. 54.
10.
Timoshenko
,
S. P.
and
Goodier
,
J. N.
, in
Theory of Elasticity
, 3rd ed.,
McGraw-Hill Book Co.
,
New York
,
1970
, p. 246.
11.
Brandes
,
E. A.
, in
Smithells Metals Reference Book
,
Butterworth & Co. Ltd.
,
London
,
1983
.
12.
Zhu
,
Y. T.
,
Devletian
,
J. H.
, and
Manthiram
,
A.
,
Journal of Phase Equilibria
 1054-9714, Vol.
15
,
1994
, pp.
37
-
41
.
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