利用高分辨透射电镜研究了含铜高纯净钢时效过程中铜偏聚区的形貌与结构变化,分析了含铜钢的时效强化机制.结果表明,含铜钢固溶态与时效初期铁素体基体存在铜原子偏聚区,随时效时间延长,在时效硬度峰处铜偏聚区演变为富铜的亚稳Fe-Cu颗粒,该富铜析出相与基体呈半共格关系,其周围与内部存在的高密度位错与层错构成位错运动的阻碍,这可能是导致含铜钢时效强化的主要原因.
参考文献
| [1] | 杨才福,张永权.新一代易焊接高强度高韧性船体钢的研究[J].钢铁,2001(11):50-54. |
| [2] | 王学敏,周桂峰,杨善武,贺信莱.含铜低合金高强钢的时效行为[J].钢铁研究学报,2000(05):40-45. |
| [3] | M.K.BANERJEE;P.S.BANERJEE;S.DATTA .Effect of Thermomechanical Processing on the Microstructure and Properties of a Low Carbon Copper Bearing Steel[J].ISIJ International,2001(3):257-261. |
| [4] | S.W. THOMPSON;G. KRAUSS .Copper Precipitation During Continuous Cooling and Isothermal Aging of A710-Type Steels[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,1996(6):1573-1588. |
| [5] | Deschamps M;Militzer;Poole W J .Precipitation kinetics and strengthening ofa Fe-0.8 wt% Cu alloy[J].ISIJ International,2001,41:196-205. |
| [6] | Goodman S R;Brenner S S .An FIM-atom probe study of the precipitation of copper from iron 1.4 at pct copper[J].Metallurgical and Materials Transactions,1973,4(10):2363. |
| [7] | Naoki Maruyama;Masaaki Sugiyama;Takuya Hara;Hiroshi Tamehiro .Precipitation and phase transformation of copper particles in low alloy ferritic and martensitic steels[J].Materials transactions,1999(4):268-277. |
| [8] | 刘宗昌,李文学,王玉峰,王海燕,安治国,任慧平.Fe-1.12Cu合金中Cu的脱溶[J].金属热处理,2005(06):40-45. |
| [9] | 刘宗昌,任慧平,王海燕.含铜低碳高纯净钢的固溶与时效工艺[J].金属热处理,2004(12):58-61. |
| [10] | 王海燕,卢弘,刘宗昌,任慧平,王玉峰.含铜高纯净钢固溶态的研究[J].材料热处理学报,2005(06):66-68. |
| [11] | 毛卫民,任慧平,余永宁.结构钢中含铜析出相的时效强化作用[J].材料热处理学报,2004(02):1-4. |
| [12] | Othen P J;Jenkins M L;Smith G D .High-resolution electron microscopy studies of the structure of Cu precipitations in α-Fe[J].Philosophical Magazine A:Physics of Condensed Matter:Structure Defects and Mechanical Properties,1994,70(01):1-24. |
| [13] | 余永宁.金属学原理[M].北京:冶金工业出版社,2000:496-498. |
| [14] | 安治国 .含铜高纯低碳钢中铜沉淀过程的研究[D].内蒙古科技大学,2006. |
| [15] | Huiping Ren,Weimin Mao.Precipitation behavior of B2-like particles in Fe-Cu binary alloy[J].北京科技大学学报(英文版),2002(03):185-187. |
| [16] | Nedelcu S.;Schmauder S.;Moldovan N.;Kizler P. .Atomic scale modelling of edge dislocation movement in the alpha-Fe-Cu system[J].Modelling and simulation in materials science and engineering,2000(2):181-191. |
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