张辉,崔文芳,王建军,刘春明

• 1:东北大学材料各向异性与织构教育部重点实验室

摘要(Abstract)：

利用Gleeble-2000热模拟试验机研究了不同Ce含量的00Cr17高纯铁素体不锈钢的热变形行为,并利用光学显微镜、扫描电镜和透射电镜对实验钢在不同温度下的显微组织进行了观察和分析。结果表明:在00Cr17高纯铁素体不锈钢中添加稀土Ce完全抑制了900～1050℃的中温脆性区的产生,改善了1350℃以上的高温脆性区内的热塑性。Ce抑制中温脆性区产生的主要原因是Ce抑制了Cr23C6在晶界上的析出,而改善高温脆性区的热塑性是因为Ce减少了硫、磷等低熔点杂质在晶界的富集,抑制了高温时部分晶界优先熔化而造成的开裂。

关键词(KeyWords)： 00Cr17铁素体不锈钢;Ce;热塑性;断面收缩率

Abstract:

Keywords:

基金项目(Foundation): 辽宁省科技攻关计划项目(2007221007);; 长江学者和创新团队发展计划资助项目(IRT0713)

作者(Author): 张辉,崔文芳,王建军,刘春明

DOI: 10.13289/j.issn.1009-6264.2011.01.012

参考文献(References)：

• [1]刘海涛,刘振宇,王国栋,等.超纯铁素体不锈钢的组织、织构及深拉伸性能[J].东北大学学报,2009,30(5):661-664.LIU Hai-tao,LIU Zhen-yu,WANG Guo-dong,et al.Microstructure,texture and deep drawability of ultra-purified ferritic stainless steel[J].Journal ofNortheastern University,2009,30(5):661-664.
• [2]Shanmugam K,Lakshminarayanan A K,Balasubramanian V.Effect of weld metal properties on fatigue crack growth behaviour of gas tungsten arcwelded AISI 409M grade ferritic stainless steel joints[J].International Journal of Pressure Vessels and Piping,2009,86(8):517-524.
• [3]SimG M,Ahn J C,Hong S C.Effect of Nb precipitate coarsening on the high temperature strength in Nb containing ferritic stainless steels[J].MaterSci Eng A,2005,396(1-2):159-165.
• [4]Fujita N,Ohmura K,Yamamoto A.Changes of microstructures and high temperature properties during high temperature service of niobium addedferritic stainless steels[J].Mater Sci Eng A,2003,351(1-2):272-281.
• [5]Calvo J,Rezaeian A,Cabrera J M,et al.Effect of the thermal cycle on the hot ductility and fracture mechanisms of a C-Mn steel[J].EngineeringFailure Analysis,2007,14(2):374-383.
• [6]罗海文,赵沛,王明林,等.SCM420钢在600℃至熔点温度范围内的热塑性[J].钢铁,1999,34(3):47-52.LUO Hai-wen,ZHAO Pei,WANG Ming-lin,et al.On hot ductility of SCF420 steel from 600℃to solidus point[J].Iron and Steel,1999,34(3):47-52.
• [7]Mintz B,Yue S,Jonas J.Hot ductility of steels and its relationship to the problem and transverse cracking during continuous casting[J].InternationalMaterials Reviews,1991,36(5):190-198.
• [8]张辉,王建军,刘春明.00Cr17高纯铁素体不锈钢热塑性的研究[J].材料科学与工艺,2010,18(3):281-284.ZHANG Hui,WANG Jian-jun,LIU Chun-ming.Study on hot ductility of 00Cr17 high purity Ferritic stainless steel[J].Materials Science andTechnology,2010,18(3):281-284.
• [9]Katsumata A,Todoroki H.Effect of rare earth metal on inclusion composition in molten stainless steel[J].Iron and Steel Maker,2002,29(7):51-57.
• [10]朱京希,王龙妹,戚国平,等.稀土对铁素体不锈钢凝固组织的改善[J].稀土,2005,26(5):81-84.ZHU Jing-xi,WANG Long-mei,QI Guo-ping,et al.Improvements of solidification structure of AISI430 ferrite stainless steel treated by rare earthelements[J].Chinese Rare Earths,2005,26(5):81-84.
• [11]马杰,刘芳.稀土元素在钢中的作用及对钢性能的影响[J].钢铁研究,2009,37(3):54-56.MA Jie,LIU Fang.Application of rare earth element in steel and its influence on steel properties[J].Research on Iron and Steel,2009,37(3):54-56.
• [12]Yu S C,Zhua Q H,Wu S Q,et al.Microstructure of steel 5Cr21Mn9Ni4N alloyed by rare earth[J].Journal of Iron and Steel Research,2006,13(2):40-44.
• [13]Watanabe Y,Kain V,Shoji T,et al.Effect of Ce addition on the sensitization properties of stainless steels[J].Scripta Materialia,2000,42(3):307-312.
• [14]Lin Q,Guo F,Zhu X Y.Behaviors of lanthanum and cerium on grain boundaries in carbon manganese clean steel[J].Journal of Rare Earths,2007,25(4):485-489.
• [15]Park Y S,kim S T,Lee I S,et al.Effects of rare earth meals addition and aging treatment on the corrosion resistance and mechanical properties ofsuper duplex stainless steels[J].Metals and Materials International,2002,8(3):309-318.
• [16]余永宁.金属学原理[M].北京:冶金工业出版社,2005.
• [17]邱巨峰.稀土在晶界存在形式及对晶界状态的影响[J].稀土,1983(4):58-68.QIU Ju-feng.The existing form of rare earth on the grain boundary and its effect on interfacial state[J].Chinese Rare Earths,1983(4):58-68.
• [18]杜挺,乐可襄.稀土元素在铁液中与碳相互作用的研究[J].金属学报,1987,23(4):207-210.DU Ting,Yue Ke-xiang.Interaction between rare earth elements and carbon in liquid iron[J].Acta Metallurgica Sinica,1987,23(4):207-210.
• [19]张东彬,吴承建,杨让.Fe-P与Fe-P-Ce合金中的晶界磷偏聚及其对脆性的影响[J].金属学报,1991,27(4):110-114.ZHANG Dong-bin,WU Cheng-jian,YANG Rang.Grain boundary segregate of P in Fe-P and Fe-P-Ce alloys and effect on their brittleness[J].ActaMetallurgica Sinica,1991,27(4):110-114.
• [20]Hnsel H,Stratmann L,Keller H,et al.Effects of the grain boundary segregants P,S,C and N on the grain boundary self diffusivity inα-iron[J].ActaMetallurgica,1985,33(4):659-665.
• [21]翁宇庆.超细晶粒钢-钢的组织细化理论与控制技术[M].北京:冶金工业出版社,2006.
• [22]林勤,郭锋,朱兴元.碳锰洁净钢中镧和铈在晶界的行为[J].中国稀土学报,2006,24(6):729-733.LIN Qin,GUO Feng,ZHU Xing-yuan.Behavior of lanthanum and cerium on grain boundaries in carbon manganese clean steel[J].Journal of theChinese Rare Earth Society,2006,24(6):729-733.

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