王海燕,安治国,任慧平,刘宗昌,王玉峰

• 1:内蒙古科技大学材料与冶金学院
• 2:北京科技大学新金属材料国家重点实验室
• 3:内蒙古科技大学材料与冶金学院
• 4:内蒙古科技大学材料与冶金学院

摘要(Abstract)：

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。

关键词(KeyWords)： 含铜高纯净钢;铜偏聚区;强化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50361001);; 内蒙古科技大学校内基金(KJ200608)

作者(Author): 王海燕,安治国,任慧平,刘宗昌,王玉峰

参考文献(References)：

• [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,2001,36(11):50-54.YANG Cai-fu,ZHANG Yong-quan.New generation of HSLA steels for naval structures[J].Iron and Steel,2001,36(11):50-54.
• [2]王学敏,周桂峰,杨善武,等.含铜低合金高强钢的时效行为[J].钢铁研究学报,2000,12(5):40-45.WANG Xue-min,ZHOU Gui-feng,YANG Shan-wu,et al.Aging of HSLA steels bear ing copper[J].Journal of Iron and steel research,2000,12(5):40-45.
• [3]Banerjee M K,Banerjee P S,Datta S.Effect of thermo mechanical processing on the microstructure and properties of a low carbon copper bearing steel[J].ISIJ Inter,2001,41(3):260-262.
• [4]Thompson S W,Krauss G.Copper precipitation during continuous cooling and isothermal aging of A710-type steels[J].Met Trans A,1996,27A(6):1573-1588.
• [5]Deschamps M,Militzer,Poole W J.Precipitation kinetics and strengthening of a Fe-0.8 wt%Cu alloy[J].ISIJ Inter,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],Met Trans,1973,4(10):2363.
• [7]Maruyama N,Sugiyama M,Hara T.Precipitation and phase transformation of copper particles in low alloy ferritic and martensitic steels[J].MaterialsTransactions JIM,1999,40(4):268-277.
• [8]刘宗昌,李文学,王玉峰.Fe-1.12%Cu合金中Cu的脱溶[J].金属热处理,2005,30(6):40-44.LIU Zong-chang,LI Wen-xue,WANG Yu-feng.Precipitation of Cu in Fe-1.12%Cu alloy[J].Heat Treatment of Metals,2005,30(6):40-44.
• [9]刘宗昌,任慧平,王海燕.含铜高纯净钢的固溶与时效工艺[J].金属热处理,2004,29(12):58-61.LIU Zong-chang,REN Hui-ping,WANG Hai-yan.Solution and aging of steel containing Cu[J].Heat Treatment of Metals,2004,29(12):58-61.
• [10]王海燕,卢弘,刘宗昌,等.含铜高纯净钢固溶态的研究[J].材料热处理学报,2005,26(6):66-68.WANG Hai-yan,LU Hong,LIU Zong-chang,et al.Solution of Cu-containing high purity steels[J].Trans Mater Heat Treat,2005,26(6):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,2004,25(2):1-4.MAO Wei-min,REN Hui-ping,YU Yong-ning.Ageing strengthening effect of precipitates containing copper in structural steels[J].Trans Mater Heat Treat,2004,25(2):1-4.
• [12]Othen P J,Jenkins M L,Smith G D.High-resolution electron microscopy studies of the structure of Cu precipitations in-αFe[J].Phil Mag A,1994,70(1):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:内蒙古科技大学,2006:50.
• [15]REN Hui-ping,MAO Wei-ming.Precipitation behavior of B2-like particle in Fe-Cu binary alloy[J].J Univ Sci&Technol Beijing,2002,9(3):185-187.
• [16]Nedelcu S,Kizler P,Schmauder S,et al.Atomic scale modelling of edge dislocation movement in the Fe-Cu system[J].Modelling Simul Mater Sci Eng,2000,8:181-191.

文章评论(Comment)：