Abstract
Low-temperature tensile tests on plain specimens of an iron–0·02% carbon alloy containing carbide particles of different size and distribution have indicated that microcrack formation resulting from ferrite cleavage is easier when large second-phase particles are present. Scanning electron-microscope observations have shown that the excellent fracture-resistance of material in the quench-aged condition is due to the difficulty of cracking small intra granular carbide particles and also of extending cracks in small particles into the ferrite matrix.
Get full access to this article
View all access options for this article.
References
1.
Cottrell
A. H.
, Trans. Met. Soc. A.I.M.E ., 1958 , 212 , 192 .
2.
Fetch
N. J.
, “ Fracture " (edited by B. L. Averbach et al.), p. 54 . 1959 : New York and London (John Wiley) .
3.
Fetch
N. J.
, J. Iron Steel Inst ., 1953 , 174 , 25 .
4.
Hahn
G. T.
,
Cohen
M.
, and
Averbach
B. L.
ibid ., 1962 , 200 , 634 .
5.
Oates
G.
, ibid ., 1968 , 206 , 930 .
6.
Danko
J. C.
and
Stout
R. D.
Trans. Amer. Soc. Metals , 1957 , 49 , 189 .
7.
Leslie
W. C.
,
Williams
G. B.
, and
Hutton
D. S.
J. Iron Steel Inst ., 1961 , 198 , 21 .
8.
Almond
E. A.
,
Embury
J. D.
, and
Timbres
D. H.
Canad. Met. Quart ., 1969 , 8 , 51 .
9.
McMahon
C. J.
and
Cohen
M.
Acta Met ., 1965 , 13 , 591 .
10.
Lindley
T. C.
, J. Iron Steel Inst ., 1969 , 207 , 984 .
11.
Liu
C. T.
and
Gurland
J.
Trans. Amer. Soc. Metals , 1968 , 61 , 156 .
12.
Allen
N. P.
,
Rees
W. P.
,
Hopkins
B. E.
, and
Tipler
H. R.
J. Iron Steel Inst ., 1953 , 174 , 108 .
13.
Josefsson
A.
, Trans. Amer. Soc. Metals , 1954 , 200 , 652 .
14.
Smith
R. L.
,
Spangler
G.
, and
Brick
R. M.
ibid ., 1954 , 46 , 973 .
15.
Hahn
G. T.
and
Rosenfield
A. R.
Acta Met ., 1966 , 14 , 1815 .
16.
Smith
E.
, “Physical Basis of Yield and Fracture ”. 1966 : London (Inst. Physics and Phys. Soc.) .
17.
Smith
E.
, Internat. J. Fracture Mechanics , 1968 , 4 , 131 .
18.
Keh
A. S.
and
Leslie
W. C.
“Materials Science Research ”. 1963 : New York (Plenum Press) .
19.
Brindley
B. J.
, private communication .
20.
Oates
G.
,
Richards
C. E.
, and
Lindley
T. C.
to be published .
21.
Wilson
D. V.
, Metal Sci. J ., 1967 , 1 , 40 .
22.
Brindley
B. J.
and
Lindley
T. C.
to be published .