Abstract
The kinetics of austenite decomposition were studied in high-purity Fe-0.1C-0.4Mn-0.3Si-X (concentrations in weight percent;X represents 3Ni, 1Cr, or 0.5Mo) steels at temperatures between 500 °C and 675 °C. The transformation stasis phenomenon was found in the Fe-C-Mn-Si-Mo and Fe-C-Mn-Si-Ni alloys isothermally transformed at 650 °C and 675 °C but not in the Fe-C-Mn-Si and Fe-C-Mn-Si-Cr alloys at any of the temperatures investigated. The occurrence of transformation stasis was explained by synergistic interactions among alloying elements. The paraequilibrium model was applied to calculate the metastable fraction of ferrite in each alloy. This fraction was shown to coincide with cessation of transformation in the Mo alloy transformed at 600 °C. Transformation stasis was found in both the Ni and the Mo alloys isothermally reacted at 650 °C and 675 °C. The interactions among Mn, Si, and Mo, as well as interactions among Mn, Si, and Ni, appear to decrease the threshold concentrations for transformation stasis in Fe-C-Mn-Si systems. Segregation of Mn and Mo to the α/yγ boundary, assisted by the presence of Si, was suggested to enhance the solute draglike effect (SDLE) and lead to transformation stasis. In the Ni alloy, a lower driving force for ferrite formation resulting from the Ni addition could be responsible for the occurrence of transformation stasis.
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G.J. Shiflet and H.I. Aaronson:Metall. Trans. A, 1990, vol. 21A, pp. 1413–32.
W.T. R ynolds, Jr., F.Z. Li, C.K. Shui, and H.I. Aaronson:Metall. Trans. A, 1990, vol. 21A, pp. 1433–63.
H. Goldenstein and H.I. Aaronson:Metall. Trans. A, 1990, vol. 21A, pp. 1465–78.
W.T. Rynolds, Jr., S.K. Liu, F.Z. Li, S. Hartfield, and H.I. Aaronson:Metall. Trans. A, 1990, vol. 21 A, pp. 1479–91.
S.K. Liu, W.T. Raynolds, Jr., H. Hu, G.J. Shiflet, and H.I. Aaronson:Metall. Trans. A, 1985, vol. 16A, pp. 457–66.
H.I. Aaronson, W.T. Raynolds, Jr., H. Hu, and S.K. Liu:Metall. Trans. A, 1989, vol. 20A, pp. 324–30.
R.F. Hehemann and A.R. Troiano:Met. Prog., 1956, vol. 70, pp. 97–104.
W.T. Griffiths, L.B. Pfeil, and N.P. Allen: in2nd Report of Alloy Steels Research Committee, The Iron and Steel Institute, London, 1939, pp. 1343–67.
H.K.D.H. Bhadeshia and D.V. Edmonds:Metall. Trans. A, 1979, vol. 10A, pp. 895–907.
G. Chen, H.I. Aaronson, S.K. Liu, and S.S. Brenner: Carnegie Mellon University, Pittsburgh, PA, unpublished research, 1989.
H.I. Aaronson: inThe Mechanism of Phase Transformation in Crystalline Solids, Institute of Metals, London, 1968, pp. 270–81.
R.F. Hehemann, K.R. Kinsman, and H.I. Aaronson:Metall. Trans., 1972, vol. 3, pp. 1077–94.
H.I. Aaronson, W.T. R ynolds, Jr., G.J. Shiflet, and G. Spanos:Metall. Trans. A, 1990, vol. 21A, pp. 1343–80.
K.R. Kinsman, E. Eichen, and H.I. Aaronson:Metall. Trans., 1971, vol. 2, pp. 346–48.
J.R. Bradley and H.I. Aaronson:Metall. Trans. A, 1981, vol. 12A, pp. 1729–41.
P.G. Boswell, K.R. Kinsman, G.J. Shiflet, and H.I. Aaronson:inMechanical Properties and Phase Transformations in Engineering Materials, S.D. Antolovich, R.O. Ritchie, and W.W. Gerberich, eds., TMS-AIME, Warrendale, PA, 1986, pp. 445–66.
H. Tsubakino and H.I. Aaronson:Metall. Trans. A, 1987, vol. 18A, pp. 2047–60.
K.R. Kinsman and H.I. Aaronson: inThe Transformation and Hardenability in Steels, Climax Molybdenum Company, Ann Arbor, MI, 1967, p. 39.
W.T. R ynolds, Jr., H.I. Aaronson, and G. Spanos:Mater. Trans., Jpn. Inst. Met., 1991, vol. 32, pp. 737–46.
Y. Ohmori and T. Maki:Mater. Trans., Jpn. Inst. Met., 1991, vol. 32, pp. 631–41.
H.I. Aaronson and C. Wells:Trans. AIME, 1956, vol. 8, pp. 1216–23.
T. Tanaka: Ph.D. Thesis, Carnegie Mellon University, Pittsburgh, PA, 1992.
E.E. Underwood:Quantitative Stereology, Addison-Wesley, Reading, MA, 1979.
E.R. Weibel:Stereological Methods, V.I Practical Methods for Biological Morphometry, Academic Press, London, 1979.
T. Gladman and J.H. Woodhead:J. Iron Steel Inst., 1960, vol. 194, pp. 189–93.
G.F. Vander Voort:Metallography — Principles and Practice, McGraw-Hill, New York, NY, 1984.
C.K. Shui, W.T. Raynolds, Jr., G.J. Shiflet, and H.I. Aaronson:Metallography, 1988, vol. 21, pp. 91–102.
H.I. Aaronson, T. Furuhara, J.M. Rigsbee, W.T. Raynolds, Jr., and J.M. Howe:Metall. Trans. A, 1990, vol. 21A, pp. 2369–409.
W.T. Reynolds, Jr., F.Z. Li, C.K. Shui, G.J. Shiflet, and H.I. Aaronson: inPhase Transformations ’87, G.W. Lorimer, ed., Institute of Metals, Cambridge, United Kingdom, 1987, pp. 330–33.
E.A. Guggenheim:Mixtures, Oxford University Press, Oxford, United Kingdom, 1952.
R.H. Fowler and E.A. Guggenheim:Statistical Thermodynamics, MacMillan, New York, NY, 1939.
M. Hillert and L.I. Staffansson:Acta Chem. Scand., 1970, vol. 24, pp. 3618–26.
C.H.P. Lupis and J.F. Elliott:Acta Metall., 1967, vol. 15, pp. 265–76.
E. Foo and C.H.P. Lupis:Acta Metall., 1973, vol. 21, pp. 1409–30.
C.H.P. Lupis and J.F. Elliott:Acta Metall., 1966, vol. 14, pp. 529–38.
C.H.P. Lupis and J.F. Elliott:Acta Metall., 1966, vol. 14, pp. 1019–32.
M. Enomoto and H.I. Aaronson:CALPHAD, 1985, vol. 9, pp. 43–58.
A. Hultgren:Trans. ASM, 1947, vol. 39, p. 915.
M. Hillert: Technical Report, Swedish Institute for Metals Research, Stockholm, Sweden, 1953.
W.T. Reynolds, Jr., M. Eomoto, and H.I. Aaronson: inPhase Transformations in Ferrous Alloys, A.R. Marder and J.I. Goldstein, eds., TMS-AIME, Philadelphia, PA, 1983, pp. 155–200.
H.I. Aaronson and H.A. Domian:Trans. TMS-AIME, 1966, vol. 236, pp. 781–96.
M. Enomoto and H.I. Aaronson:Metall. Trans. A, 1987, vol. 18A, pp. 1547–57.
J.B. Gilmour, G.R. Purdy, and J.S. Kirkaldy:Metall. Trans., 1972, vol. 3, pp. 1455–64.
M. Hillert: inHardenability Concepts with Applications to Steel, D.V. Doane and J.S. Kirkaldy, eds., TMS-AIME, Warrendale, PA, 1978, pp. 5–27.
J.F. Counsell, E.B. Lees, and P.J. Spencer:Metal Sci. J., 1971, vol. 5, pp. 210–13.
J.A. Neider and R. Mead:Computer J., 1965, vol. 7, pp. 308–13.
M.J.D. Powell:Computer J., 1964, vol. 7, pp. 155–62.
H. Rosenbrock:Computer J., 1960, vol. 3, pp. 175–84.
H.A. Smith:Trans. AIME, 1935, vol. 116, pp. 342–62.
B. Uhrenius: inHardenability Concepts with Applications to Steel, D.V. Doane and J.S. Kirkaldy, eds., TMS-AIME, Warrendale, PA, 1978, pp. 28–81.
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Chen, J.K., Vandermeer, R.A. & Reynolds, W.T. Effects of alloying elements upon austenite decomposition in Low-C steels. Metall Mater Trans A 25, 1367–1379 (1994). https://doi.org/10.1007/BF02665470
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DOI: https://doi.org/10.1007/BF02665470