Abstract
The yielding behaviour of underaged Inconel alloy 718, which is precipitation hardened by coherent ordered bct γ″ and ordered fcc γ′ phases, has been studied. It was found that the yielding of the underaged specimens occurs by the shearing of the precipitate particles by the glide dislocations which move in pairs. During this stage the yield strength of material can be adequately accounted for mainly by the coherency hardening mechanism.
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References
1.
GLEITER
FL
and
HORNBOGEN
E.
Mater. Sci. Eng. , 1967 –68, 2, 285.
2.
PHILLIPS
V. A.
: Philos. Mag ., 1967 , 16 , 103 .
3.
PHILLIPS
V. A.
: Scr. Metall ., 1968 , 2 , 147 .
4.
RAYNOR
D.
and
SILCOCK
J. M.
Met. Sci ., 1970 ,4 , 121 .
5.
MUNJAL
V.
and
ARDELL
A. J.
Acta Metall ., 1975 , 23 , 513 .
6.
ARDELL
A. J.
,
MUNJAL
V.
, and
CHELLMAN
D. J.
Metall. Trans ., 1976 , 7A , 1263 .
7.
CHATURVEDI
M. C.
,
LLOYD
D. J.
, and
CHUNG
D. W.
Met. Sci ., 1976 , 10 , 373 .
8.
ARDELL
A. J.
: Met. Sci ., 1980 , 14 , 221 .
9.
MELANDER
A.
and
PRESSON
P. A.
Met. Sci ., 1978 , 12, 391.
10.
PAULONIS
D. F.
,
OBLAK
J. M.
, and
DUVALL
D. S.
Trans. ASM , 1969 , 62 , 611 .
11.
OBLAK
J. M.
,
PAULONIS
D. F.
, and
DUVALL
D. S.
Metall. Trans ., 1974 , 5 , 143 .
12.
CHATURVEDI
M. C.
and
CHUNG
D. W.
Metall. Trans ., 1981 , 12A , 77 .
13.
HAN
YA-FANG
,
DEB
P.
and
CHATURVEDI
M. C.
Met. Sci ., 1982 , 16 , 555 .
14.
RAMASWAMY
V.
,
SWAN
P. R.
, and
WEST
D. R. F.
J. Less-Common Met ., 1971 , 27 , 17 .
15.
ARDELL
A. J.
and
NICHOLSON
R. B.
Acta Metall ., 1966 , 14 , 1295 .
16.
BROWN
L. M.
and
HAM
R. K.
in ‘Strengthening methods in crystals’, (ed.
Kelloy
A.
and
Nicholson
R. B.
67 ; 1971 , London , Elsevier .
17.
BROWN
L. M.
and
HAM
R. K.
in ‘Strengthening methods in crystals’, (ed.
Kelloy
A.
and
Nicholson
R. B.
67 ; 1971 , London , Elsevier .
18.
BROWN
L. M.
and
HAM
R. K.
in ‘Strengthening methods in crystals’, (ed.
Kelloy
A.
and
Nicholson
R. B.
9 –135 ; 1971 , London , Elsevier .
19.
RAVINDRAN
C.
and
CHATURVEDI
M. C.
unpublished research, Mechanical Engineering Department, University of Manitoba, Winnipeg , 1981 .
20.
GEROLD
V.
and
HABERKORN
H.
Phys. Status Solidi , 1965 , 12 , 235 .
21.
OBLAK
J. M.
,
DUVALL
D. S.
, and
PAULONIS
D. F.
Mater. Sci. Eng ., 1974 , 13 , 51 .
22.
PHILLIPS
V. A.
: Philos. Mag ., 1965 , 11 , 775 .