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.
参考文献
| [1] | 刘海涛,刘振宇,王国栋,江来珠.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（自然科学版）,2009(05):661-664. |
| [2] | K. Shanmugam;A. K. Lakshminarayanan;V. Balasubramanian .Effect of weld metal properties on fatigue crack growth behaviour of gas tungsten arc welded AISI 409M grade ferritic stainless steel joints[J].International Journal of Pressure Vessels and Piping,2009(8):517-524. |
| [3] | Sim GM;Ahn JC;Hong SC;Lee KJ;Lee KS .Effect of Nb precipitate coarsening on the high temperature strength in Nb containing ferritic stainless steels[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):159-165. |
| [4] | Fujita N.;Ohmura K.;Yamamoto A. .Changes of microstructures and high temperature properties during high temperature service of Niobium added ferritic stainless steels[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):272-281. |
| [5] | J. Calvo;A. Rezaeian;J.M. Cabrera .Effect of the thermal cycle on the hot ductility and fracture mechanisms of a C-Mn steel[J].Engineering failure analysis,2007(2):374-383. |
| [6] | 罗海文,赵沛,王明林,成国光,朱国良.SCM420钢在600℃至熔点温度范围内的热塑性[J].钢铁,1999(03):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].International Materials Reviews,1991,36(05):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(03):313-316. |
| [9] | A. Katsumata;H. Todoroki .Effect of Rare Earth Metal on Inclusion Composition in Molten Stainless Steel[J].Iron & Steelmaker,2002(7):51-57. |
| [10] | 朱京希,王龙妹,戚国平,徐飚.稀土对铁素体不锈钢凝固组织的改善[J].稀土,2005(05):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(03):54-56. |
| [12] | YU Shi-chang,ZHU Qiu-hua,WU Shen-qing,GONG You-jun,GONG Yuan-sheng,LIAN Ming-sheng,YE Gang,CHENG Yi-jun.Microstructure of Steel 5Cr21Mn9Ni4N Alloyed by Rare Earth[J].钢铁研究学报（英文版）,2006(02):40-44. |
| [13] | Y.Watanabe;V.Kain .Effect of Ce addition on the sensitization properties of stainless steels[J].Scripta materialia,2000(3):307-312. |
| [14] | Lin Qin,Guo Feng,Zhu Xingyuan.Behaviors of Lanthanum and Cerium on Grain Boundaries in Carbon Manganese Clean Steel[J].稀土学报（英文版）,2007(04):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 of super duplex stainless steels[J].Metals and Materials International,2002,8(03):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(04):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(04):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(04):110-114. |
| [20] | H(a)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 in α-iron[J].Acta Metallurgica,1985,33(04):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(06):729-733. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%