Abstract
A series of dual-phase (DP) steels containing finely dispersed martensite with different volume fractions of martensite (V m) were produced by intermediate quenching of a boron- and vanadium-containing microalloyed steel. The volume fraction of martensite was varied from 0.3 to 0.8 by changing the intercritical annealing temperature. The tensile and impact properties of these steels were studied and compared to those of step-quenched steels, which showed banded microstructures. The experimental results show that DP steels with finely dispersed microstructures have excellent mechanical properties, including high impact toughness values, with an optimum in properties obtained at ∼0.55 V m. A further increase in V m was found to decrease the yield and tensile strengths as well as the impact properties. It was shown that models developed on the basis of a rule of mixtures are inadequate in capturing the tensile properties of DP steels with V m>0.55. Jaoul-Crussard analyses of the work-hardening behavior of the high-martensite volume fraction DP steels show three distinct stages of plastic deformation.
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References
Dual-Phase and Cold Pressing Vanadium Steels in the Automobile Industry, Vanitec, Berlin, 1978.
Structure and Properties of Dual-Phase Steels, R.A. Kot and J.W. Morris, eds., AIME, New York, NY, 1979.
Fundamental of Dual-Phase Steels, R.A. Kot and B.L. Bramfitt, eds., AIME, New York, NY, 1981.
S. Kang and H. Kwon: Metall. Trans. A, 1987, vol. 18A, pp. 1587–92.
Japanise Industrial Standard, JIS GO555, 1977, p. 321.
E.E. Underwood: Quantitative Stereology, Addision-Wesley, Reading, MA, 1970, p. 82.
R.G. Davies: Metall. Trans. A, 1979, vol. 10A, pp. 113–18.
F.H. Samuel, D. Daniel, and O. Sudre: Mater. Sci. Eng., 1987, vol. 92, pp. 43–62.
R.G. Davies: Metall. Trans. A, 1978, vol. 9A, pp. 671–79.
A.R. Marder: Metall. Trans. A, 1982, vol. 13A, pp. 85–92.
T.S. Byun and I.S. Kim: J. Mater. Sci., 1993, vol. 28, pp. 2923–32.
P.H. Chang and A.G. Preban: Acta Metall., 1985, vol. 33, pp. 897–903.
M. Su, S.M. Sun, and D.Z. Yang: Scripta Metall., 1987, vol. 21, pp. 801–04.
N.K. Balliger and T. Gladman: Met. Sci., 1981, vol. 15, pp. 95–108.
M.F. Ashby: Strengthening Metals in Crystals, Elsevier, London, 1971, pp. 137–92.
I. Tamura: Trans. ISI, Jpn., 1973, vol. 13, pp. 283–92.
G.R. Speich and R.L. Miller: in Structure and Properties of Dual-Phase Steels, R.A. Kot and J.W. Morris, eds., AIME, New York, NY, 1979, p. 145.
K. Araki, Y. Takada, and K. Nakokai: Trans. ISI Jpn., 1977, vol. 17, p. 710.
K. Tanaka and T. Mori: Acta Metall., 1970, vol. 18, pp. 931–41.
L.M. Brown and W.M. Stobbs: Phil. Mag., 1971, vol. 23, p. 1185.
M.F. Ashby: Phil. Mag., 1966, vol. 14, p. 1157.
A. Bhattacharyya, T. Sakaki, and G.J. Weng: Metall. Trans. A, 1993, vol. 24A, pp. 301–14.
C. Kim: Metall. Trans. A, 1988, vol. 19A, pp. 1263–68.
N. Hansen: Metall. Trans. A, 1985, vol. 16A, pp. 2167–90.
M. Dollar, I.M. Bernstein, and A.W. Thompson: Acta Metall., 1988, vol. 36, pp. 311–20.
J. Gil Sevillano: ICSMA-5 Proc., Achen, P. Hassen et al., eds., Pergamon Press, Oxford, United Kingdom, 1979, p. 819.
S.T. Mileiko: J. Mater. Sci., 1969, vol. 4, pp. 974–77.
G. Garmong and R.B. Thompson: Metall. Trans., 1973, vol. 4, pp. 863–73.
A.R. Marder: Metall. Trans. A, 1981, vol. 12A, pp. 1569–79.
Z. Jiang, Z. Guan, and J. Lian: J. Mater. Sci., 1993, vol. 28, p. 1814.
J. Liu, Z. Jiang, and J. Lian: Mater. Sci. Technol., 1991, vol. 7, pp. 527–31.
Z. Fan and A.P. Miodownik: Scripta Metall., 1993, vol. 28, pp. 895–900.
A.H. Nakagawa and G. Thomas: Metall. Trans. A, 1985, vol. 16A, pp. 831–40.
R.M. Ramage, K.V. Jata, G.I. Shiflet, and E.A. Starke, Jr.: Metall. Trans. A, 1987, vol. 18A, pp. 1291–98.
Y.L. Su and J. Gurland: Mater. Sci. Eng., 1987, vol. 95, pp. 151–65.
P.E. Repas: Dual-Phase and Cold Pressing Vanadium Steels in the Automobile Industry, Vanitec, Berlin, 1978, p. 13.
R. Lagneborg: Dual-Phase and Cold Pressing Vanadium Steels in the Automobile Industry, Vanitec, Berlin, 1978, p. 43.
G.R. Speich: in Fundamental of Dual-Phase Steels, R.A. Kot and B.L. Bramfitt, eds., AIME, New York, NY, 1981, p. 3.
J.M. Rigsbee, J.K. Abraham, A.T. Davenport, J.E. Franklin, and J.W. Pickens: in Structure and Properties of Dual-Phase Steels, R.A. Kot and J.W. Morris, eds., AIME, New York, NY, 1979, p. 304.
F.H. Samuel: Mater. Sci. Engg., 1987, vol. 92, pp. L1-L4.
A. Bag: Ph.D. Dissertation, IIT, Kharagpur, India, 1996.
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Bag, A., Ray, K.K. & Dwarakadasa, E.S. Influence of martensite content and morphology on tensile and impact properties of high-martensite dual-phase steels. Metall Mater Trans A 30, 1193–1202 (1999). https://doi.org/10.1007/s11661-999-0269-4
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DOI: https://doi.org/10.1007/s11661-999-0269-4