Abstract
High resolution measurements of the displacements caused by the formation of bainite in a steel have confirmed that the surface relief due to each platelet in any given sheaf is identical to that of the others in a sheaf, and that the relief of each subunit conforms with the general features of an invariant plane strain. The maximum observed shear strain wasfound to be about 0·26, which is consistent with the magnitude expected from the phenomenological theory of martensite crystallography. Clear evidence has also been obtained of the plastic deformation induced in the adjacent austenite by the growth of bainite.
MST/3270
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References
1.
BOWLES
J. S.
and
MacKENZIE
J. K.
Acta Metall. , 1954 , 2 , 129 –234 .
2.
WECHSLER
w. S.
,
LIEBERMAN
D. S.
, and
REED
T. A.
Trans. AIME , 1953 , 197 , 1503 –1515 .
3.
CHRISTIAN
J. W.
: Metall. Trans. , 1994 , 25A , 1821 –1839 .
4.
CHRISTIAN
J. W.
: Acta Metall. , 1958 , 6 , 377 –379 .
5.
WATSON
J. D.
and
McDOUGALL
P. G.
Acta Metall. , 1973 , 21 , 961 –973 .
6.
SANDVIK
B. J. R
: Metall. Trans. , 1982 , 13A , 777 –787 .
7.
WAYMAN
C. M.
: in ‘Physical metallurgy’, (ed.
Cahn
R. W.
and
Haasen
P.
3 edn, 1031-1074; 1983, Amsterdam, Elsevier.
8.
BHADESHIA
H. K. D. H.
: ‘Bainite in steels’, 1-458; 1992, London, The Institute of Materials .
9.
KO
T.
and
corraELL
S. A.
J. Iron Steel Inst. , 1952 , 172 , 307 –313 .
10.
TSUYA
K.
: J. Mech. Eng. Lab. Jpn , 1956 , 2 , 20 .
11.
SPEICH
G. R.
: in ‘Decomposition of austenite by diffusional processes’, (ed.
Aaronson
H. I.
and
Zackay
V. F.
)353-369; 1962, New York, Interscience.
12.
SRINIVASAN
G. R.
and
WAYMAN
C. M.
Acta Metall. , 1968 , 16 , 609 –636 .
13.
OHMORE
y.
Trans. Iron Steel Inst. Jpn , 1971 , 11 , 95 –101 .
14.
BHADESHIA
H. K. D. H.
: Acta Metall. , 1980 , 28 , 1103 –1114 .
15.
YAMAMOTO
M.
,
FUJISAWA
T.
,
SABURI
T.
,
KURUMIZAWA
T.
, and
KUSAO
K.
Surf. Sci. , 1992 , 266 , 289 –293 .
16.
YAMAMOTO
M.
,
FUJISAWA
T.
,
SABURI
T.
,
HAYAKAWA
M.
,
OKA
M.
,
KURUMIZAWA
T.
, and
KUSAO
K.
UltraMiCrOSCOpy , 1992 , 42 –44 ; 1422-1427.
17.
VEVECICA
A.
,
OHTSUKA
H.
, and
BHADESHIA
H. K. D. H.
Mater. Sci. Technol. , 1995 , 11 , 109 –111 .
18.
JUN-JOE
Y.
,
HONG-BIN
Y.
,
ZHI-GANG
L.
, and
GANG
H.
Prog , Nat. Sci. , 1994 , 4 , 183 –187 .
19.
CHRISTIAN
J. W.
: ‘Theory of transformations in metals and alloys’ , 778 ; 1965 , Oxford , Pergamon Press .
20.
CHRISTIAN
J. W.
: ‘Theory of transformations in metals and alloys’, 2 edn, Part I, 466; 1975, Oxford, Pergamon Press .