Sage Journals: Discover world-class research

Abstract

Carbide precipitation processes in austenitic samples of an Fe–15Cr–81/2Ni–2Mo-o·09C semi-austenitic stainless steel at 700°C have been studied by measurements of hardness, saturation magnetic intensity and by electron microscopy. The austenitic structures wereproduced by a 1250°C solution treatment or by rapid heating of partially martensitic structures to produce ‘reversed austenite’; the martensite wasformed either by refrigeration below the Ms temperature or by cold rolling at room temperature. Carbideparticles, often identified as M₂₃C₆, were observed to form in several morphologies. Some regions of martensite formed from the alloy-depleted matrix on cooling to room temperature after aging. Long aging treatments resulted in partial transformation of the austenite matrix to ferrite by a diffusional process.

Get full access to this article

View all access options for this article.

References

BREEDIS

J. F.

: Trans. AIME, 1966, 236, 218.

THOMAS

and KRAUSS

: ibid., 1967, 239, 1136.

SMITH

and D. R. F. WEST: Mat. Sci., 1973, 8, 1413.

SMITH

and D. R. F. WEST: Met. Tech., 1974, 1, 37.

GOLOVCHINER

YA. M.

Phys. Met. Metallography, 1963, 15, (4), 54.

GORBACH

V. G.

et al: ibid., 1965, 20, (5), 101.

HYARR

and KRAUSS

: Trans. ASM, 1968, 61, 168.

HABROVEC

et al: JISI, 1967, 205, 861.

APPLE

and KRAUSS

: Met. Trans., 1971,2, 1785.

10.

MALYSHEV

K. A.

et al: Trudy Inst. Fis. Met., 1958, 20, 339.

11.

CINA

: JISI, 1955, 179, 230.

12.

KISHKIN

S. T.

and KLYPKIN

A. A.

: Metalloyed. Term. Obrab. Met., 1959, 5, 15.

13.

BECKITT

F. R.

and CLARK

B. R.

: Acta Met., 1967, 15, 113.

14.

BANERJEE

B. R.

et al: Trans. ASM, 1968, 61, 103.

15.

HOPKIN

L. M. T.

and TAYLOR

L. H.

: JISI, 1967, 205, 17.

16.

MAZZA

J. A.

: ibid., 1966, 204, 718.

17.

BARFORD

and MEYERS: ibid., 1963, 201, 1025.

18.

BENDURE

R. J.

et al: Trans. AIME, 1961, 221, 1032.

19.

GAROFALO

et al: Trans. ASM, 1961, 54, 430.

20.

LEWIS

M. H.

and HATTERSLEY

: Acta Met., 1965, 13, 1159.

21.

KEGG

G. R.

and SILCOCK

J. M.

: Scripta Met., 1972, 6, 1083.

22.

HATWELL

and BERGHAZEN

: ‘Precipitation processes in steels‘, 88; 1959, London, The Iron and Steel Institute.

23.

SINGHAL

L. K.

and MARTIN

J. W.

: Acta Met., 1967, 15, 1603.

24.

FLOREEN

: Trans. AIME, 1966, 236, 1429.

25.

GLOWACKI

et al: BSI, 1968, 206, 393.

Carbide precipitation and the reversion of martensite to austenite in a semi-austenitic stainless steel

Abstract

Get full access to this article

References