研究了RE元素对一种贝氏体钢的强度和韧度的影响,结果表明,含微量RE比无RE的同一种贝氏体钢冲击韧度αk值提高1倍以上,抗拉强度也略有增加;上贝氏体铁素体-奥氏体之间的取向同时存在K-S和N-W关系和单独存在K-S关系.贝氏体铁素体-奥氏体高分辨像显示,两相界面不平直,α和γ两相内有系列刃型位错和结构小台阶,两相界面未显示出连续的严格共格关系.贝氏体铁素体亚片条宽度多为5.0～10nm范围.同时讨论了贝氏体铁素体-奥氏体间取向关系和RE元素提高强韧度的机制.
参考文献
| [1] | 杜挺 .稀土元素在金属材料中的一些物理化学作用[J].金属学报,1997,33(01):69-71. |
| [2] | 余宗森;祁幻义.钢中稀土[M].北京:冶金工业出版社,1982:122. |
| [3] | 李凤照,敖青,姜江,刘鹏,李斗星.含稀土元素和Al贝氏体钢的相变和组织性能[J].金属热处理,2000(08):15-17. |
| [4] | Sho Sasaki;Keiko Nakamura;Yoshimi Hamabe;Erika Kurahashi Takahiro Hiroi .Production of iron nanoparticles by laser irradiation in a simulation of lunar-live space weathering[J].Nature,2001,410(29):555-557. |
| [5] | Gubbens A J;Kraus B;Krivane K L et al.An imaging filter for high voltage electron microscopy[J].ULTRAMICROSCOPY,1995,59:255-265. |
| [6] | Thomas G;Sarikaya M.Lath martensites in carbon steels-are they bainitic[A].TMS-AIME,1982:999-1003. |
| [7] | Sandvik B P J.An experimental sutdy of bainite formeo in Fe-Si-C Alloys[A].TMS-AIME,1982:1023-1027. |
| [8] | Smith G V;Mehl R F .Lattice Relationship in Decomposition of Austenite to Pearlite, Bainite, and Martensite[J].Transactions of The American Institute of Mining and Metallurgical Engineers,1942,150:211-226. |
| [9] | Hoekstra S.An accurate and general method of determining habit planes and orientaion relationships in bainitic steels and a verification of the IPS theory[A].TMS-AIME,1982:1017-1021. |
| [10] | Sandvic B P J;Wayman C M .Characteristics of lath Matensite: Part 1 Cystallographic and Substructural Features[J].Metallurgical and Materials Transactions,1983,14:809-822. |
| [11] | 李凤照,敖青,孟凡妍,孟祥敏,刘玉先.贝氏体钢中贝氏体铁素体精细孪晶[J].材料热处理学报,2001(02):5-8. |
| [12] | 李凤照,孟祥敏,姜江,刘玉先,敖青,肖丽美.贝氏体铁素体取向关系及残留奥氏体膜[J].材料热处理学报,2001(03):10-13. |
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