Abstract
All steels contain oxide inclusions of some kind, at least in small quantities. Such inclusions are an inevitable consequence of the physical chemistry of liquid steel. They influence the mechanical properties and machinability of steel out of all proportion to their volume, and in ways dependent upon their size, shape, and distribution. It is therefore important to understand the reasons for their occurrence and the extent to which their influence on the properties of various kinds of steel may be controlled.
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References
1.
'Basic open hearth steelmaking',
(ed.
Derge
G.
); 1964 , New York , AIME .
2.
'The making, shaping and treating of steel',
(ed.
McGannon
H.
); 1971 , Pittsburgh , United States Steel Corporation .
3.
'Basic open hearth steelmaking',
(ed.
Derge
G.
), chapters 9, 11 ; 1964 , New York , AIME .
4.
'The making, shaping and treating of steel',
(ed.
McGannon
H.
), chapter 19; 1971 , Pitts-burgh , United States Steel Corporation .
5.
'Basic open hearth steelmaking',
(ed.
Derge
G.
), chapter 16 ; 1964 , New York , AIME .
6.
'Electric furnace steelmaking', chapter 16;
1963 , New York , Interscience .
7.
Turkdogan
E. T.
: 'BOF steelmaking', Vol. 2 , chapter 4 ; 1975 , New York , AIME .
8.
Rait
J. R.
Pinder:
H. W.
J. Iron Steel Inst. ,1946 ,154 , 371.
9.
Sims
C. E.
: Trans AIME , 1959 , 215 , 367 .
10.
Bendicks
C.
Laquist:
H.
'Non-metallic inclusions in iron and steel' ; 1930 , London , Chapman and Hall .
11.
'Deoxidation of steel, a memorial volume to C. H. Herty, Jr' ;
1957 , New York , AIME .
12.
Baeyartz
M.
: 'Nonmetallic inclusions in steel'; 1947 , Cleveland , Ohio, American Society for Metals .
13.
Kiessling
R.
Lange:
N.
'Non-metallic inclusions in steel', Pt. 1 ,1964 , Pt. 2 , 1966 ; and R. Kiessling: 'Non-metallic inclusions in steel', Pt. 3 , 1968 ; London , The Iron and Steel Institute .
14.
'Basic open hearth steelmaking',
(ed.
Derge
G.
), chapter 12 ; 1964 , New York , AIME .
15.
'Electric furnace steelmaking', chapter 21;
1963 , New York , Interscience .
16.
Turkdogan
E. T.
: 'Chemical metallurgy of iron and steel', 153 ; 1973 , London , The Iron and Steel Institute .
17.
'Clean steel';
1963 , London , The Iron and Steel Institute .
18.
'Clean steel', Royal Swedish Academy of Engineering Sciences Report 169:1
; 1971 , Stockholm .
19.
'Production and application of clean steels';
1972 , London , The Iron and Steel Institute .
20.
Plöckinger
E.
: 'Clean steel', 51 ; 1963 , London , The Iron and Steel Institute .
21.
Hewitt
J.
: ibid ., 70 .
22.
Pickering
F. B.
: 'Production and application of clean steels', 75 ; 1972 , London , The Iron and Steel Institute .
23.
Aksoy
A.M.
: 'Quality requirements of super -duty steels', (ed.
Lindsay
R. W.
), 267 ; 1959 , New York , Interscience .
24.
Ochenhouse
G. H.
Werner
J. E.
: AIME Elec. Furn. Steel Conf. Proc ., 1965 , 23 , 5 .
25.
Smith
R. D.
: ibid ., 1965 , 23 , 14 .
26.
Church
C. P.
et al.: ibid ., 1965 , 23 , 18.
27.
Kollmann
W. C.
Preusch
C. D.
: ibid ., 1961 , 19 , 23 .
28.
Murray
J. D.
Johnson:
R. F.
'Clean steel', 110 ;1963 , London , The Iron and Steel Institute .
29.
Gibbs
J.W.
: 'The collected works of J. Willard Gibbs', 96 ; 1948 , New Haven , Yale University Press .
30.
Darken
L. S.
Gurry:
R. W.
'Physical chemistry of metals'; 1953 , New York , McGraw-Hill .
31.
Ricci
J. E.
: 'The phase rule and hetero-geneous equilibrium' ;1951 ,New York , Van Nostrand .
32.
Rhines
F. N.
: 'Phase diagrams in metal-lurgy'; 1956 , New York , McGraw-Hill .
33.
Prince
A.
: 'Alloy phase equilibria'; 1966 , New York , Elsevier .
34.
Gordon
P.
: 'Principles of phase diagrams in materials systems'; 1968 , New York , McGraw-Hill .
35.
'Phase diagrams
: materials science and technology', (ed.
Alper
A. M.
); 1970 , New York , Academic Press .
36.
Levin
E. M
et al.: 'Phase diagrams for ceramists' ; 1964 , Columbus , Ohio, The American Ceramic Society .
37.
ibid.,
4 .
38.
Muan
A.
Osborn
E. F.
: 'Phase equilibria among oxides in steelmaking' ; 1965 , Reading , Mass., Addison-Wesley .
39.
Levin
E. M.
et al.: 'Phase diagrams for ceramists' :1969 , 1975 supplements; Columbus ,Ohio , The American Ceramic Society .
40.
'The making, shaping and treating of steel',
(ed.
McGannon
H.
), chapter 13 ; 1971 , Pittsburgh , The United States Steel Corporation .
41.
Muan
A.
Osborn:
E. F.
'Phase equilibria among oxides in steelmaking', 169 ; 1965 , Reading , Mass., Addison-Wesley .
42.
ibid.,
62 .
43.
Elliott
J. F.
et al.: 'Thermochemistry for steelmaking' Vol. 2 ; 1963 , Reading , Mass., Addison-Wesley .
44.
Kiukola
N.
Wagner
C.
J. Electrochem. Soc ., 1957 ,104 , 379 .
45.
Fischer
W. A.
Ackerman
W.
Arch. Eisenlziittezzwes ., 36, 643 ; 1966 , 37 , 43.
46.
Fitterer
G. R.
: J. Met ., 18, 961 ; 1967 , 19 , 92.
47.
Gatellier
C.
et al.: Rév. Metall .,1969 ,66 , 673 .
48.
Wagner
C.
: 'Thermodynamics of alloys', 51 ; 1952 , Cambridge , Mass., Addison-Wesley .
49.
Lupis
C. H. P.
Elliott
J. F.
: Trans. AIME , 1965 , 233 , 829 .
50.
Lupis
C. H. P.
Elliott
J. F.
: Acta Metall ., 1966 , 14 , 529 .
51.
Sigworth
G. K.
Elliott
J. F.
: Met. Sci ., 1974 , 8 , 298 .
52.
Vahed
A.
Kay:
D. A. R.
Metall. Trans ., 1975 , 6B , 285 .
53.
Samarin
A. M.
: 'Production and application of clean steels', 17 ; 1972 , London , The Iron and Steel Institute .
54.
Koerber
F.
Oelsen
W.
Mitt. Kaiser-Wilhelm Inst. Eisenfors ch ., 1932 , 14 ,181 .
55.
Fischer
W. A.
Fleischer
H. J.
: Arch. Eisenliiittenwes ., 1961 , 32 , 1 .
56.
Muan
A.
Osborn:
E. F.
'Phase equilibria among oxides in steelmaking', 74 ; 1965 , Reading , Mass., Addison-Wesley .
57.
Forward
G.
Elliott
J. F.
: Metall. Trans ., 1970 , 1 , 2889 .
58.
Iyengar
R. K.
Philbrook
W. O.
: ibid ., 1973 , 4 , 2181 .
59.
Elliott
J. F.
: Proc. Internat. Conf. Sci. Technol. Iron Steel, Pt. 1, 416; Suppl . Trans. Iron Steel Inst. Jpn ., 1971 ,11 .
60.
Kapadia
B. M.
et al.: Trans. AIME , 1968 ,2 .42 , 1689 .
61.
McLean
A.
: AIME Elec. Furn. Steel Conf. Proc. ,1967 , 25 , 56.
62.
Earnshaw
I.
et al.: ibid ., 1966 , 24 , 41.
63.
Iyengar
R. K.
Philbrook:
W. O.
Metall. Trans., 1973 ,4 , 2189 .
64.
Kiessling
R.
Lange:
N.
'Non-metallic inclusions in steel', Pt. 1 ; 1964 , London , The Iron and Steel Institute .
65.
Luyckx
L.
et al.: J. Met ., 1974 , 26J (6 ), 35 .
66.
Blickwede
D. J.
: Met. Progr ., 1969 ,96 , (9 ), 98 .
67.
Plöckinger
E.
: 'Clean steel', 64 ; 1963 , London , The Iron and Steel Institute .
68.
Hilty
D. C.
Crafts
W.
Trans. AIME , 1952 , 188 , 425 .
69.
Waudby
P. E.
Wilson:
F. G.
'Chemical metallurgy of iron and steel', 195 ; 1973 , London , The Iron and Steel Institute .
70.
Farrell
J. W.
et al.: AIME Elec. Furn. Steel Conf. Proc ., 1970 , 28 , 64.
71.
Schwerdtfeger
K.
Schrewe
H.
ibid ., 1970 , 28 , 95 .
72.
Andersson
J.
: 'Clean steel', Royal Swedish Academy of Engineering Sciences Report 169 : 1, 100 ; 1971 , Stockholm .
73.
'Basic open hearth steelmaking', 185;
1964 , New York , AIME .
74.
Wertime
T. A.
: 'The coming of the age of steel', 289 ; 1962 , Chicago , University of Chicago Press .
75.
Wentrup
H.
: Tech. Mitt. Krupp , 1937 , 5 , 131 .
76.
Sims
C. E.
Dahle
F. B.
: Trans. Amer. Foundrymen's Assoc ., 1938 , 46 , 65 .
77.
Boris
M. J.
: AIME Elec. Furn. Steel Conf. Proc ., 1970 , 28 , 89 .
78.
Michelson
C. G.
: ibid., 1971 , 29 , 129.
79.
Sims
C. E
, ibid ., 1974 , 32 , 55.
80.
Hilty
D. C.
Crafts
W.
AIME Elec. Furn. Steel Conf. Proc ., 1953 ,11 , 121 .
81.
Hilty
D. C.
Popp
V. T.
: ibid ., 1969 , 27 , 52 .
82.
Hilty
D. C.
Farrell:
J. W.
Iron and Steelmaker , ,1975 , 2 , (5) , 17; (6) , 20 .
83.
Lichy
E. J.
et al.: AIME Proc. Open-Hearth Comm ., 1965 ,48,48 .
84.
Luyckx
L.
et al.: Metall. Trans ., 1970 ,1 , 3341 .
85.
Gs
K. A.
chneider and N. Kippenhan: 'Thermo-chemistry of the rare earth carbides, nitrides and sulphides for steelmaking', Rare Earth Information Center Report RIC - 5 ; 1971 , Ames , Iowa .
86.
Gschneider
K. A.
et al.,: 'Thermochemistry of the rare earths', Rare Earth Information Center Report IS-RIC-6 ; 1973 , Ames , Iowa .
87.
Leary
R. J.
et al.: US Bureau of Mines Report RI 7091 , 1968 .
88.
Luyckx
L.
Jackman:
J. R.
AIME Elec. Furn. Steel Conf. Proc., 1973 , 31 , 175.
89.
Wilson
W. G.
: ibid ., 1973 , 31 , 154 .
90.
Wilson
W. G.
et al.: J. Met ., 1974 , 26 , (5 ), 14 .
91.
Lu
W-K.
McLean
A.
: Ironmaking Steelmaking , 1974 , 1 , 228 .
92.
Henderson
W. J. M.
Chapman
J. A.
: AIME Elec. Furn. Steel Conf. Proc ., 1973 , 31 , 162 .
93.
Bennett
H. J.
Sandell
L. P.
Jr:
ibid ., 1973 , 31 , 167 .
94.
Bingel
C. J.
Scott
L. V.
: ibid .,1973 ,31 , 171 .
95.
Wilson
W. G.
Wells
R. G.
: Met. Progr ., 1973 , 104 , (7 ), 75 .
96.
Wilson
W. G.
: 'Proc. Tenth Rare Earth Research Conf. ', US Atomic Energy Commission, Oak Ridge, Tenn., 1 , 34.
97.
'JANAF thermochemical tables';
1971 , Washington D.C. , US Government Printing Office.
98.
Sponseller
D. L.
Flinn
R. A.
: Trans. AIME , 1964 , 230 , 876 .
99.
Hacket
F. C.
McIver
J.
; AIME Elec. Furn. Steel Conf. Proc ., 1971 , 29 , 117.
100.
Dunn
E. J.
: ibid ., 1971 , 29 , 122 .
101.
Uemura
T.
et al.: AIME Proc. Open-Hearth Comm ., 1976 , 59 , 457 .
102.
Jager
H.
Holzgruber:
W.
'Chemical metallurgy of iron and steel', 198 ; 1973 , London , The Iron and Steel Institute .
103.
Plöckinger
E.
et al.: Radex Rundschau , 1969 , April , 508 .
104.
Ototani
T.
Karaura
Y.
: Trans. Iron Steel Inst. Jpn ., 1972 , 12 , (5 ), 338 .
105.
Asano
K.
Nakano
T.
Hid ., 1972 , 12 , 343 .
106.
Schoop
J.
Aschendorff
K. K.
: Radex Rundschau , April, 495 .
107.
Wahlster
M.
et al.: ibid ., 478 .
108.
Forster
E.
et al.: Stahl. Eisen ., 1974 , 94 , 474.
109.
Plöckinger
E.
Wahlster
M.
ibid ., 1960 , 80 , 659 .
110.
Samarin
A. M.
et al.: Neue I/1We, 1962 ,7 , 213.
111.
Torssell
K.
: Jernkonterets Ann ., 1967 , 151 , 890 .
112.
Gatellier
G.
Olette:
M.
'Chemical metal-lurgy of iron and steel', 191 ; 1973 , London , The Iron and Steel Institute .
113.
Torssell
K.
: 'Clean steel', Royal Swedish Academy of Engineering Sciences Report 169 : 1, 88 ; 1971 , Stockholm .
114.
Pomey
G.
Trentini:
B.
'Production and application of clean steels', 1 ; 1972 , London , The Iron and Steel Institute .
115.
Forster
E.
Richter:
H.
ibid ., 24 .
116.
Grethen
E.
Philippe:
L.
ibid ., 29 .
117.
Miyashita
Y.
et al.: Proc. Second Japan—USSR Joint Symp. on Phys. Chem. Met., 101 ; 1969 , Tokyo.
118.
Lindborg
U.
Torssell
K.
Trans. AIME , 1968 , 242 , 94 .
119.
Iyengar
R. K.
: Ph.D. thesis , Carnegie-Mellon University , 1970 .
120.
Matthew
P. M
et al.: Arch. Eisenhattenwes ., 1974 ,45,569 .
121.
von Bogdandy
L.
et al.: ibid ., 1961 ,32 , 451 ; 1963 , 34 , 235 .
122.
Turkdogan
E. T.
: J. Iron Steel Inst ., 1966 , 204 , 914 .
123.
Turpin
M. L.
Elliott:
J. F.
ibid ., 217 .
124.
Sigworth
G. K.
Elliott:
J. F.
Can. Metall. Q. , 1972 ,11 , 337.
125.
Lacmann
R.
: 'Kinetic metallurgischer Vorgange bei der Stahlherstellung', 381 ; 1972 , Diisseldorf , Verlag Stahleisen .
126.
von Bogdandy
L.
et al.: ibid ., 401 .
127.
Forward
G.
Elliott
J. F.
: AIME Elec. Film. Steel Conf. Proc ., 1966 , 24 , 16 .
128.
Sigworth
G. K.
Elliott:
J. F.
Metall. Trans., 1973 , 4 , 105.
129.
Torssell
K.
et al.: C. R. Hebd. Seances Acad. Sci ., 1968 , 267 , 869.
130.
Miyashita
Y.
: Trans. Iron Steel Inst. Jpn ., 1967 , 7 , 1 .
131.
Sakagami
R.
et al.: Tetsu-to-Hagane , 1969 , 55 , 550.
132.
Miyashita
Y.
: Nippon Kokan Tech. Rep. (Overseas) , 1965 ,4 ,41 .
133.
Kozakevitch
P.
Olette:
M.
'Production and application of clean steels', 42 ; 1972 , London , The Iron and Steel Institute .
134.
Chipman
J.
: Trans. AIME , 1962 , 224 , 1288 .
135.
Schenck
H.
et al.: Arch. Eisenhilltenives ., 1970 , 41 , 131.
136.
Iyengar
R. K.
Philbrook:
W. O.
'Kinetic metallurgischer Vorgange bei der Stahlher - stellung', 219 ; 1972 , Diisseldorf, Verlag Stahleisen .
137.
Iyengar
R. K.
Philbrook
W. O.
: Metall. Trans ., 1972 , 3 , 1823 .
138.
Knuppel
V. H.
et al.: Stahl Eisen , 1965 , 85 , 675.
139.
Kozakevitch
P.
Lucas
L. D.
: Rev. Metall ., 1968 , 65 , 589 .
140.
Linder
S.
: Scan. J. Metall ., 1974 , 3 , 137 .
141.
Lindskog
L.
Sandberg
H.
Ibid ., 1973 ,2 , 71 .
142.
Braun
T. B.
: Sc.D. thesis , Massachusetts Institute of Technology , 1974 .
143.
Rege
R. A.
et al.: Metall. Trans ., 1970 , 1 , 2652 .
144.
Crussard
C.
: 'Clean steel', 66 ; 1963 , London , The Iron and Steel Institute .
145.
Snow
R. B.
Shea
J. A.
: J. Amer. Ceram. Soc ., 1949 , 32 , (6 ), 187 .
146.
Duderstadt
G. C.
el at.: AIME Elec. Furn. Steel Conf. Proc ., 1967 , 25 , 61.
147.
Farrell
J. W.
Hilty
D. C.
: ibid ., 1971 , 29 , 31 .
148.
Singh
S. N.
: Metall. Trans ., 1974 , 5 , 2165 .
149.
Kay
D. A. R.
Kontopoulos:
A.
'Chemical metallurgy of iron and steel', 178 ; 1973 , London , The Iron and Steel Institute .
150.
Swisher
J. H.
Turkdogan:
E. T.
Trans. AIME , 1967 , 239 , 426.
151.
'Metals handbook', 8 ed.,
Vol. 8 ,304 ; 1973 , Metals Park , Ohio, American Society for Metals .