The pearlitic transformation and the deformation behavior of lamellar cementite after cold rolling in eutectoid steels Fe-0.76%C-0. 137%Mn (mass fraction) were studied by means of Formastor-F (Full Automatic Transformation Testing Instrument) and field emission scanning electronic microscopy (FESEM) observation. Fine and coarse pearlite were obtained in the eutectoid steels austenitized at 900 ℃ for 15min, then hold at 620 ℃ for 90 s and 690 ℃ for 7 h, respectively. Thedeformation behavior of cold rolled lamellar cementite could be classified as: cleavage fracture, inhomogeneous slip, fragmentation, thinning or necking, and homogeneous bending. The cementite lamellae with the thickness of more than 100 nm could be deformed plastically.
参考文献
| [1] | Pickering F B;Met A .Some aspects of the relationship between rnicrostructure and mechanical properties[J].Iron and Steel,1965,38:110-117. |
| [2] | Takahashi T;Nagumo M .Flow stress and work-hardening of pearlitic steel[J].Transactions of the Japan Institute of Metals,1970,11(02):113-119. |
| [3] | Langford G .A study of the deformation of patented steel wire[J].Metallurgical and Materials Transactions,1970,1:465-477. |
| [4] | Webb W W;Forgeng W D .Mechanical behavior of microcrystals[J].Acta Materialia,1958,6:462-469. |
| [5] | Langford G .Deformation of pearlite[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1977,8A:861-875. |
| [6] | Porter D A;Easterling K E;Smith G D W .Dynamic studies of the tensile deformation and fracture of pearlite[J].Acta Materialia,1978,26:1405-1422. |
| [7] | Inoue A;Ogura T;Masumoto T .Transmission electron microscope study on deformation and fracture of cementite in cold-rolled steels[J].Transactions of the Japan Institute of Metals,1976,17(03):149-157. |
| [8] | M. Umemoto;Y. Todaka;T. Takahashi .High temperature deformation behavior of bulk cementite produced by mechanical alloying and spark plasma sintering[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(0):894-898. |
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