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Abstract

The precipitation of aluminium nitride has been studied in pipeline steels containing aluminium, niobium, nitrogen, titanium, and vanadium. It was found that the titanium to nitrogen ratio had a dominant influence on the formation of aluminium nitride as reflected in the high value of aluminium in these precipitates when the ratio was low. Thermomechanical deformation of the steels appeared to promote aluminium nitride precipitation which occurred preferentially in the coarser particles. The precipitates of multiple microalloyed steels were found to be complex and their occurrence was interpreted in terms of isomorphology and miscibility. The overall steel analyses have been utilised in charting the sequence of precipitation.

MST/793

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References

BROWN

E. L.

and ARDO

A. D. DE

: in ‘Thermochemical processing of microalloyed austenite’ (Proc. Conf.), (eds. A. J. De Ardo et al.), 319-341; 1981, Metals Park, OH, ASM.

KEMOWN

S. R.

and WILSON

W. G.

: in ‘Thermochemical processing of microalloyed austenite’ (Proc. Conf.), (eds. A. J. De Ardo et al.), 343-359; 1981, Metals Park, OH, ASM.

MICHAEL

J. P.

AND JONAS

J. J.

: Acta Metall., 1981, 29, 513–526.

TAGUCHI

and SAKAMURA

: Ada Metall., 1966, 14, 405–423.

WHITE

M. J.

and OWEN

w. S.

: Metall. Trans., 1980, 11A, 597–604.

AMIN

R. K.

and PICKERING

F. B.

: in ‘Thermochemical processing of microalloyed austenite’ (Proc. Conf.), (eds. A. J. De Ardo et al.), 1-13; 1981, Metals Park, OH, ASM.

BODSWORTH

and BELL

H. B.

: ‘Physical chemistry of iron and steel manufacture’, 2 edn, 61; 1972, London, Longmans.

WEISS

, FITZSIMONS

G. L.

, MIELITYINEN-TIITO

, and ARDO

A. J. DE

: in ‘Thermochemical processing of microalloyed austen-ite’ (Proc. Conf.), (eds. A. J. De Ardo et al.), 33-57; 1981, Metals Park, OH, ASM.

ROBERTS

: in IISLA steels, technology and application’ (Proc. Conf.), (ed. Korchynsky

, 33-65; 1983, Metals Park, OH, ASM.

10.

HOUGHTON

D. C.

, WEATHERLY

G. C.

, and EMBURY

J. D.

: in ‘Thermochemical processing of microalloyed austenite’ (Proc. Conf.), (eds. A. J. De Ardo et al.), 267-292; 1981, Metals Park, OH, ASM.

11.

LOBERG

, NORDGREN

, STAID

, and EASTERLING

K. E.

: Metall. Trans., 1984, 15A, 33–41.

12.

SHARMA

R. C.

, LAKSHMANAN

V. K.

, and KIRKALDY

J. S.

: Metall. Trans., 1984, 15A, 545–553.

13.

GOLDSCHMIDT

H. J.

: ‘Interstitial alloys’, 48-55; 1967, London, Butterworths.

14.

IRVINE

K. J.

, PICKERING

F. B.

, and GLADMAN

: J. Iron Steel Inst., 1967, 205, 161–182.

15.

NARITA

: Trans. Iron Steel Inst. Jpn, 1975, 15, 145–151.

16.

SIWECKI

, SANBERG

, and ROBERTS

: in I-ISLA steels, technology and application’ (Proc. Conf.), (ed. Korchynsky

, 619-634; 1983, Metals Park, OH, ASM.

17.

LAGNEBORG

: Scand. J. Metall., 1985, 14, 289–298.

18.

ROBERTS

and SANBERG

: Swedish Institute for Metals Research no. IM-1489, 1980.

19.

CHEN

, LORETTO

M. H.

, and COCHRANE

: in ‘EMAG ‘85’, IOP Conf. Series no. 78, chap. 8, 261-264; 1985, Bristol, Insti-tute of Physics.

Aluminium nitride precipitation in multiple microalloyed pipeline steels

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