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超纯铁素体不锈钢热变形过程中的析出行为 预览 被引量:1

Precipitation Behavior of Ultra-pure Ferritic Stainless Steel During Hot Deformation
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摘要 利用热力模拟实验机及试验轧机研究了添加Ti,V的超纯中铬铁素体不锈钢热变形过程中的析出行为变化特点,并采用热动力学计算及透射电子显微镜观察来表征析出相特征.结果表明:热变形过程中形成的析出相主要为TiC,这与热动力学分析一致.这些析出相的特征与变形温度密切相关,随着变形温度的降低,析出相TiC尺寸更加细小且分布更加弥散.这主要是由于变形温度降低时扩散速率相对较低,不利于析出相长大,而晶体缺陷增加,形变诱导析出的有效形核位置增加.这一热变形过程中的析出行为变化规律在中试试验条件下得到了验证. The precipitation behavior of an ultra-pure medium-chromium ferritic stainless steel with addition of Ti and V during hot deformation was studied using a thermomechanical simulator and pilot rolling mill. The characteristic of precipitates was investigated using thermodynamic calculation and transmission electron microscopy. The results showed that TiC is primary precipitate formed during hot deformation, in agreement with the thermodynamic calculation. The characteristic of these precipitates is closely dependent on deformation temperature. The TiC formed during hot deformation at relatively low temperature is finer in size and denser in dispersion than that at high temperature. This can be explained by a combination of the slower diffusion rate associated with the lower deformation temperature which is unfavorable to precipitate growth, and increasing lattice defects due to lower deformation temperature which can generate more nucleation sites for the strain-induced precipitates. This precipitation behavior during hot deformation is confirmed by the pilot rolling experiments.
作者 高飞 刘振宇 于福晓 GAO Fei, LIU Zhen-yu , YU Fu-xiao (1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China; 2. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China. Corresponding author: GAO Fei, E-mail: gaofei181@ aliyun, com
出处 《东北大学学报:自然科学版》 EI CAS CSCD 北大核心 2016年第1期44-48,共5页 Journal of Northeastern University(Natural Science)
基金 国家科技支撑计划项目(2012BAE04802) 国家自然科学基金资助项目(51271050) 中国博士后科学基金资助项目(2015M581346).
关键词 铁素体不锈钢 热变形 析出行为 热动力学计算 透射电子显微镜 ferritic stainless steel hot deformation precipitation behavior thermodynamiccalculation transmission electron microscopy
作者简介 高飞(1985-),男,山西运城人,东北大学博士后研究人员; 刘振宇(1967-),男,内蒙古赤峰人,东北大学教授,博士生导师; 于福晓(1965-),男,山东乳山人,东北大学教授,博士生导师.
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  • 1陆世英著..不锈钢概论[M].北京:中国科学技术出版社,2007:288.
  • 2Gao F,Liu Z Y,Liu H T. Toughness under different rollingprocesses in ultra purified Fe-17wt% Cr alloy steels [ J ].Journal of Alloys and Compounds,2013 ,567:141 - 147. 被引量:1
  • 3Gao F,Liu Z Y,Liu H T. Texture evolution and formabilityunder different hot rolling conditions in ultra purified 17% Crferritic stainless steels[ J]. Materials Characterization,75:93 -100. 被引量:1
  • 4MacDonald W D,Carpenter G J C, Saimoto S. Using strainrate sensitivity measurements to determine phase relations inA430 stainless steel [ J ]. Materials Science and Engineering :A,1995,190(l/2):33 -42. 被引量:1
  • 5Sinclair C W, Mithieux J D,Schmitt J H, et al.Recrystallization of stabilized ferritic stainless steel sheet[ J].Metallurgical and Materials Transactions A,2005 ,36 (11):3205 -3215. 被引量:1
  • 6Pandit A,Murugaiyan A, Podder A S, et al. Strain inducedprecipitation of complex carbonitrides in Nb-V and Ti-Vmicroalloyed steels [ J], Scripta Materialia,2005,53 ( 11 ):1309 -1314. 被引量:1
  • 7Dutta B,Valdes E, Sellars C M. Mechanism and kinetics ofstrain induced precipitation of Nb ( C, N) in austenite [ J].Acta Metallurgica et Materialia, 1992,40 (4) :653 -662. 被引量:1
  • 8Yen H W, Chen P Y, Huang C Y, et al. Interphaseprecipitation of nanometer-sized carbides in a titanium-molybdenum-bearing low-carbon steel [ J]. Acta Materialia,2011,59(16) :6264 - 6274. 被引量:1
  • 9Pereloma E V, Gazder A A,Jonas J et al. Effect ofprocessing schedule on the microstructure and texture of0. 78 wt% Cr extra-low-carbon steel [ J ]. ISIJ International,2008,48(10) :1443 -1450. 被引量:1
  • 10Gao F,Liu Z Y, Misra R D K, et al. Constitutive modelingand dynamic softening mechanism during hot deformation ofan ultra-pure 17% Cr ferritic stainless steel stabilized with Nb[J]. Metals and Materials International ,20\4,20(5) :939 -951. 被引量:1

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