Optical microscopy (OM) and transmission electron microscopy (TEM) were used to investigate the effect of tempering temperature on the experimental extra-high carbon steels.It is found that tempering reaction can reduce austenite content and influence the stability of the austenite.As-normalized microstructure is a mixture of twinned martensite and retained austenite.Tempered at 250 ℃ for 2 h,lath martensite can occasionally be found nearby the diffusionally decomposed austenite arca.It also is found that tempering at 650 ℃ for 2 h,nanoparticles of carbides precipitate in the martensite and decomposed austenite.
参考文献
| [1] | Honeycombe R.W.K;Bhadeshia H.K.D.H.Steels:Microstructure and Properties[M].Edited by Edward Arnold,London,1995:20. |
| [2] | Podder, A.S.;Lonardelli, I.;Molinari, A.;Bhadeshia, H.K.D.H. .Thermal stability of retained austenite in bainitic steel: An in situ study[J].Proceedings of the Royal Society. Mathematical, physical and engineering sciences,2011(2135):3141-3156. |
| [3] | Saha Podder A .and Bhadeshia H.K.D.H,Thermal stability of austenite retained in bainitic steels[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2010,527(7-8):2121. |
| [4] | C. Garcia-Mateo;M. Peet;F. G. Caballero .Tempering of hard mixture of bainitic ferrite and austenite[J].Materials Science and Technology: MST: A publication of the Institute of Metals,2004(7):814-818. |
| [5] | Yang J.R;Yu T.H;Wang C.H.Martensitic transformations in AISI 440C stainless steel[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2006(438-440):276. |
| [6] | Putatunda S.K .Fracture toughness of a high carbon and high silicon steel[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2001,297(1-2):31. |
| [7] | Yu Degang.Iron-Based Maraging-Tempering Change Theory and Its Strength and Toughness[M].Edited by Shanghai Jiaotong University Press,Shanghai,2008:147. |
| [8] | Li, H.Y.;Lu, X.W.;Wu, X.C.;Min, Y.A.;Jin, X.J. .Bainitic transformation during the two-step quenching and partitioning process in a medium carbon steel containing silicon[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2010(23):6255-6259. |
| [9] | Li H.Y;Lu X.W;Wu X.C .Affect of the tempering temperature on the microstructure and mechanical properties of dual phase steels[J].Materials Science and Engineering A,2012,532(15):21. |
| [10] | Li Songrui.Metal Heat Treatment[M].Edited by Central South University Press,Changsha,2003:111. |
| [11] | Liu K;Zhang J.J;Wu K.M .Effect of heat treatment on mechanical properties of 1500 MPa high strength wear-resistant steel[J].Current Advances in Materials and Processes,2010,168-170:847. |
| [12] | Miyamoto G;Oh J.C .and Hono K.Effect of partitioning of Mn and gi on the growth kinetics of cementite in tempered Fe-0.6 mass％ C martensite[J].Acta Materialia,2007,55(15):5027. |
| [13] | Maweja, K;Stumpf, W .The design of advanced performance high strength low-carbon martensitic armour steels - Microstructural considerations[J].Materials Science & Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1-2):160-166. |
| [14] | Hernandez V.H.Baltazar;Nayak S.S.N;Zhou Y .Tempering of martensite in dual-phase steels and its effects on softening behavior[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2011,42:2011. |
| [15] | Yu H.T;Chang Z;Xi C.D;Yue H.H and Shu Q.H .New observation ofmartensitic morphology and substructure using transmission electron microscopy[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1992,23(05):1413. |
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